VIACOM INC
S-4/A, 1999-11-12
CABLE & OTHER PAY TELEVISION SERVICES
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<PAGE>


 As filed with the Securities and Exchange Commission on November 10, 1999

                                                 Registration No. 333-88613

- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549
                                ---------------

                              Amendment No. 1

                                    to
                                    FORM S-4
                             REGISTRATION STATEMENT
                                     Under
                           THE SECURITIES ACT OF 1933
                                ---------------
                                  VIACOM INC.
             (Exact name of Registrant as specified in its charter)

        Delaware                   4841                     04-2949533
     (State or other         (Primary Standard           (I.R.S. Employer
     jurisdiction of            Industrial            Identification Number)
    incorporation or        Classification Code
      organization)               Number)

              Viacom Inc.                      Michael D. Fricklas, Esq.
             1515 Broadway               Senior Vice President, General Counsel
        New York, New York 10036                     and Secretary
             (212) 258-6000                           Viacom Inc.
   (Address, including zip code, and                 1515 Broadway
 telephone number, including area code,            New York, NY 10036
  of Registrant's principal executive                (212) 258-6000
                offices)                (Name, address, including zip code, and
                                                   telephone number,
                                           including area code, of agent for
                                                        service)
                                ---------------
                                   Copies To:
 Creighton O'M. Condon,    Louis J. Briskman, Esq.    Scott A. Barshay, Esq.
          Esq.             Executive Vice President   Cravath, Swaine & Moore
 Stephen T. Giove, Esq.              and                 825 Eighth Avenue
   Shearman & Sterling         General Counsel          New York, NY 10019
  599 Lexington Avenue         CBS Corporation            (212) 474-1000
   New York, NY 10022        51 West 52nd Street
     (212) 848-4000           New York, NY 10019
                                (212) 975-4321
                                ---------------
   Approximate date of commencement of proposed sale to the public: As soon as
practicable after this Registration Statement becomes effective and the
conditions to consummation of the offer described herein have been satisfied or
waived.
   If the securities being registered on this Form are being offered in
connection with the formation of a holding company and there is compliance with
General Instruction G, check the following box. [_]
   If this Form is filed to register additional securities for an offering
pursuant to Rule 462(b) under the Securities Act, check the following box and
list the Securities Act registration statement number of the earlier effective
registration statement for the same offering. [_]
   If this Form is a post-effective amendment filed pursuant to Rule 462(d)
under the Securities Act, check the following box and list the Securities Act
registration statement number of the earlier effective registration statement
for the same offering. [_]
                                ---------------
                        CALCULATION OF REGISTRATION FEE
<TABLE>
- ----------------------------------------------------------------------------------------------
- ----------------------------------------------------------------------------------------------
<CAPTION>
                                            Proposed           Proposed
 Title of each Class of      Amount         Maximum            Maximum
    Securities to be         to be       Offering Price       Aggregate          Amount of
       Registered          Registered      Per Share        Offering Price    Registration Fee
- ----------------------------------------------------------------------------------------------
<S>                      <C>            <C>              <C>                  <C>
Class B Common Stock,
 par value $.01
 per share.............  907,746,991(1)  Not Applicable   $38,386,428,800(2)   $10,671,428(2)
- ----------------------------------------------------------------------------------------------
Series C Convertible
 Preferred Stock,
 par value $.01 per
 share ................    11,003(3)     Not Applicable      $485,000,000(4)    $134,830(4)
- ----------------------------------------------------------------------------------------------
Total..................                                    $38,871,428,800     $10,806,258(5)
- ----------------------------------------------------------------------------------------------
- ----------------------------------------------------------------------------------------------
</TABLE>

(1) Based on the maximum number of shares of Viacom Class B Common Stock that
    may be required to be issued in connection with the merger, calculated as
    the product of (a) 826,492,158, which is the sum of (i) the number of
    shares of CBS Corporation common stock, par value $1.00 per share ("CBS
    Common Stock") outstanding on August 31, 1999, (ii) the number of shares of
    CBS Common Stock issuable pursuant to outstanding stock options through the
    date the merger is expected to be consummated, and (iii) the number of
    shares of CBS Common Stock otherwise expected to be issued prior to the
    date the merger is expected to be consummated and (b) the exchange ratio
    for the merger of 1.085 shares of Viacom Class B Common Stock for each
    outstanding share of CBS Common Stock. This number also includes 11,003,000
    shares of Viacom Class B Common Stock as may be required for issuance upon
    conversion of the Viacom Series C Preferred Stock being registered
    hereunder.

(2) Estimated solely for the purpose of calculating the registration fee
    required by Section 6(b) of the Securities Act of 1933, as amended (the
    "Securities Act") (the "Registration Fee"), and computed pursuant to Rule
    457(f)(1) and Rule 457(c) thereunder on the basis of the market value of
    the CBS Common Stock to be exchanged in the merger, as the product of (a)
    $46.445 (the average of the high and low sales prices per share of CBS
    Common Stock as reported on the New York Stock Exchange Transactions Tape
    on September 30, 1999) and (b) 826,492,158, which is the sum of (i) the
    number of shares of CBS Common Stock outstanding on August 31, 1999, (ii)
    the number of shares of CBS Common Stock issuable pursuant to outstanding
    stock options through the date the merger is expected to be consummated and
    (iii) the number of shares of CBS Common Stock otherwise expected to be
    issued prior to the date the merger is expected to be consummated. This
    number does not account for shares issuable upon conversion of the Viacom
    Series C Preferred Stock being registered hereunder.

(3) Based on the product of (a) the total number of outstanding shares of
    Series B Participating Preferred Stock, par value $1.00 per share, of CBS
    Corporation ("CBS Series B Preferred Stock") on November 9, 1999, and (b)
    the exchange ratio for the merger of 1.085 shares of Viacom Series C
    Preferred Stock for each outstanding share of CBS Series B Preferred Stock.

(4) Estimated solely for the purpose of calculating the Registration Fee, and
    computed pursuant to Rule 475(f)(2) under the Securities Act as the book
    value of the outstanding shares of CBS Series B Preferred Stock.

(5) Pursuant to Rule 457 under the Securities Act, the registration fee is
    $10,671,428 plus $134,830. $10,671,428 of the Registration Fee was paid on
    October 7, 1999 in connection with the initial filing of this Registration
    Statement on Form S-4.

                                ---------------

   The Registrant hereby amends this Registration Statement on such date or
dates as may be necessary to delay its effective date until the Registrant
shall file a further amendment which specifically states that this Registration
Statement shall thereafter become effective in accordance with Section 8(a) of
the Securities Act of 1933 or until this Registration Statement shall become
effective on such date as the Commission, acting pursuant to said Section 8(a),
may determine.

- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
<PAGE>

++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
+                                                                              +
+The information in this prospectus is not complete and may be changed. We may +
+not sell these securities until the registration statement filed with the     +
+Securities and Exchange Commission is effective. This prospectus is not an    +
+offer to sell these securities and it is not soliciting an offer to buy these +
+securities in any state where the offer or sale is not permitted.             +
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

               PRELIMINARY PROXY STATEMENT--SUBJECT TO COMPLETION

                                     [LOGO]

                                  VIACOM INC.
                                 1515 Broadway
                            New York, New York 10036

                                                           November ., 1999

Dear Viacom Shareholder,

  As you no doubt have heard, Viacom and CBS have agreed to a merger which will
create what we believe will be the leading global company in the production,
promotion and distribution of entertainment, news, sports and music. The new
company, which will retain the Viacom name, will be the largest seller of
advertising across the media landscape, with extraordinary assets in broadcast
and cable television, a leading radio and outdoor media company, a preeminent
motion picture studio, a world-class consumer publishing group, a leading
regional theme park operation and a growing portfolio of Internet ventures.
This merger advances the vision we share with CBS of building the preeminent
global media and entertainment company. The new Viacom will have exceptional
content and a portfolio of some of the world's most powerful brands.

  Viacom is soliciting your consents in connection with this merger.

  Under the terms of the merger, holders of CBS common stock will have the
right to receive 1.085 shares of Viacom Class B common stock for each share of
CBS common stock that they own and holders of CBS Series B preferred stock will
have the right to receive 1.085 shares of newly created Viacom Series C
preferred stock for each share of CBS Series B preferred stock that they own.
Both Viacom Class A and Class B common stock and CBS common stock are primarily
traded on the New York Stock Exchange.

  National Amusements, Inc., which owns approximately 68% of Viacom's Class A
common stock, has agreed to consent to the merger and the other proposals
described in this joint proxy statement/prospectus. Therefore, approval of
these proposals by the shareholders of Viacom is assured.


  If you hold Viacom Class A common stock, please complete, sign, date and mail
your signed written consent form in the enclosed return envelope. Approval of
these matters by Viacom's shareholders will occur when the holders of a
majority of the outstanding Viacom Class A common stock deliver dated and
properly executed consents to Viacom. National Amusements is expected to
deliver its consent at 12:00 noon, New York City time, on ., 1999. Therefore,
for your consent to comply, we must receive it, dated and properly executed, no
later than 12:00 noon, New York City time, on ., 1999. You may revoke your
written consent in the manner described in this document at any time prior to
the time that sufficient consents are delivered to Viacom.

  Detailed information concerning the merger, the merger agreement, related
agreements, Viacom's proposed new Restated Certificate of Incorporation and
other important information is contained in the attached joint proxy
statement/prospectus and its annexes. Please read this information carefully.


                                 Sincerely,

                                 Sumner M. Redstone

                                 Chairman and Chief Executive Officer

  For a discussion of risk factors which you should consider in evaluating the
merger, see "Risk Factors" beginning on page ..

   Neither the Securities and Exchange Commission nor
 any state securities commission has approved or
 disapproved of the securities to be issued in the
 merger or determined whether this joint proxy
 statement/prospectus is truthful or complete. Any
 representation to the contrary is a criminal
 offense.

  This joint proxy statement/prospectus is dated ., 1999, and is first being
mailed to shareholders on or about ., 1999.
<PAGE>

               PRELIMINARY PROXY STATEMENT--SUBJECT TO COMPLETION

                                     [LOGO]

                                  VIACOM INC.
                                 1515 Broadway
                            New York, New York 10036

                      NOTICE OF CONSENT SOLICITATION
                               To Be Held ., 1999

To the Shareholders of Viacom:

   The enclosed materials seek your consent in connection with the Agreement
and Plan of Merger, dated as of September 6, 1999, as amended and restated as
of October 8, 1999 and November  , 1999, among Viacom, CBS Corporation, a
Pennsylvania corporation, and Viacom/CBS LLC, a Delaware limited liability
company, a copy of which is attached as Annex A to the joint proxy
statement/prospectus that accompanies this notice. The merger agreement
provides for the merger of CBS with and into Viacom (or, under specified
circumstances, a wholly owned subsidiary of Viacom), the issuance of shares of
Viacom Class B common stock, par value $.01 per share, and shares of Viacom
Series C preferred stock, par value $.01 per share, in the merger and the
adoption of the proposed new Restated Certificate of Incorporation for Viacom.
If the merger agreement is adopted and the merger is consummated, each issued
and outstanding share of CBS common stock, par value $1.00 per share, will be
converted into the right to receive 1.085 shares of Viacom Class B common stock
and each issued and outstanding share of CBS Series B preferred stock, par
value $1.00 per share, will be converted into the right to receive 1.085 shares
of Viacom Series C preferred stock, par value $.01 per share.

   Viacom's Class A shareholders are requested to take action by written
consent to approve all of the following:

    1. if the merger is structured as a merger of CBS into Viacom, the
       adoption of the merger agreement;

    2. if the merger is structured as a merger of CBS into Viacom/CBS LLC,
       the adoption of the proposed new Restated Certificate of
       Incorporation of Viacom;

    3. if the merger is structured as a merger of CBS into Viacom/CBS LLC,
       the issuance of up to

       .shares of Viacom Class B common stock to the holders of CBS common
    stock and up to

       .shares of Viacom Series C preferred stock to the holders of CBS
    Series B preferred stock in the merger, in accordance with the terms
    set forth in the merger agreement; and

    4. the amendment to increase the number of shares of Viacom Class B
       common stock authorized to be issued under the Viacom incentive plan
       by an additional 10 million shares.

   Holders of record of Viacom Class A common stock at the close of business on
November ., 1999 will be entitled to take action by written consent concerning
the proposals.

   The Board of Directors of Viacom has declared that the merger agreement is
advisable and has unanimously approved the merger agreement and unanimously
recommends that shareholders approve the adoption of the merger agreement. The
Board of Directors of Viacom has also unanimously approved the issuance of
Viacom Class B common stock and Viacom Series C preferred stock in connection
with the merger and declared advisable and approved the proposed new Restated
Certificate of Incorporation, and unanimously recommends that you approve the
issuance of Viacom Class B common stock and Viacom Series C preferred stock in
connection with the merger and to the adoption of the proposed new Restated
Certificate of Incorporation. In addition, the Board of Directors has approved
the amendment to increase the number of shares of Viacom Class B common stock
authorized to be issued under the Viacom incentive plan and unanimously
recommends that you approve the amendment.
<PAGE>

   Detailed information concerning the merger, the merger agreement, related
agreements, Viacom's proposed new Restated Certificate of Incorporation and
other important information is contained in the attached joint proxy
statement/prospectus and its annexes. Please read this information carefully.


   If you hold Viacom Class A common stock, please complete, sign, date and
mail your signed written consent form in the enclosed return envelope. Approval
of these matters by Viacom's shareholders will occur when the holders of a
majority of the outstanding Viacom Class A common stock deliver dated and
properly executed consents to Viacom. National Amusements is expected to
deliver its consent at 12:00 noon, New York City time, on ., 1999. Therefore,
for your consent to comply, we must receive it, dated and properly executed, no
later than 12:00 noon, New York City time, on ., 1999. You may revoke your
written consent in the manner described in this document at any time prior to
the time that sufficient consents are delivered to Viacom.

                                          By Order of the Board of Directors,

                                          Michael D. Fricklas
                                          Secretary

November ., 1999

                        YOUR CONSENT IS IMPORTANT.

           PLEASE COMPLETE, SIGN, DATE AND RETURN YOUR CONSENT.
<PAGE>

++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
+                                                                              +
+The information in this prospectus is not complete and may be changed. We may +
+not sell these securities until the registration statement filed with the     +
+Securities and Exchange Commission is effective. This prospectus is not an    +
+offer to sell these securities and it is not soliciting an offer to buy these +
+securities in any state where the offer or sale is not permitted.             +
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
               PRELIMINARY PROXY STATEMENT--SUBJECT TO COMPLETION

                                     [LOGO]

                                CBS CORPORATION
                              51 West 52nd Street
                            New York, New York 10019

                                                           November ., 1999

Dear CBS Shareholder,

  You are cordially invited to attend a special meeting of shareholders of CBS
Corporation to be held on ., 1999 at ., New York, New York, commencing at .
a.m., eastern standard time.

  At the special meeting, you will be asked to consider and vote upon a
proposal to adopt the Agreement and Plan of Merger, dated as of September 6,
1999, as amended and restated as of October 8, 1999 and as of November ., 1999,
among CBS, Viacom Inc. and Viacom/CBS LLC, which provides for the merger of CBS
and Viacom or, under specified circumstances, a wholly owned subsidiary of
Viacom. Under the terms of the merger agreement, each issued and outstanding
share of CBS common stock will be converted into the right to receive 1.085
shares of Viacom non-voting Class B common stock and each issued and
outstanding share of CBS Series B preferred stock will be converted into the
right to receive 1.085 shares of Viacom Series C preferred stock. Both Viacom's
Class B common stock and CBS' common stock are listed and traded on the New
York Stock Exchange.

  The merger agreement advances the vision we share with Viacom of building the
preeminent global media and entertainment company. The combination of our
companies, our powerful brands and our highly complementary businesses will
create a company we believe is uniquely qualified to capitalize on new
opportunities domestically and around the world.

  Your participation in the special meeting, in person or by proxy, is
important. Even if you anticipate attending in person, we urge you to mark,
sign and return the enclosed proxy card promptly in the enclosed postage-paid
envelope to ensure that your shares of CBS common stock and CBS Series B
preferred stock will be represented at the special meeting. If you do attend in
person, you will be entitled to vote your shares in person.

  The joint proxy statement/prospectus that accompanies this letter contains
information about Viacom and CBS and describes in detail the merger and related
matters. Attached to the joint proxy statement/ prospectus is a copy of the
merger agreement, related agreements and other important information.

  Thank you, and we look forward to seeing you at the special meeting.

                               Very truly yours,

    David T. McLaughlin                        Mel Karmazin
                                  President and Chief Executive Officer
Chairman of the Board

  For a discussion of risk factors which you should consider in evaluating the
merger, see "Risk Factors" beginning on page ..

   Neither the Securities and Exchange Commission nor any state securities
 commission has approved or disapproved of the securities to be issued in the
 merger or determined whether this joint proxy statement/prospectus is
 truthful or complete. Any representation to the contrary is a criminal
 offense.


   This joint proxy statement/prospectus is dated ., 1999, and is first being
 mailed to shareholders on or about ., 1999.
<PAGE>

              PRELIMINARY PROXY STATEMENT -- SUBJECT TO COMPLETION

                                     [LOGO]

                                CBS CORPORATION

                            51 West 52nd Street

                         New York, New York 10019

                   NOTICE OF SPECIAL MEETING OF SHAREHOLDERS
                               To Be Held ., 1999

To the Shareholders of CBS:

   A special meeting of shareholders of CBS Corporation, a Pennsylvania
corporation, will be held on ., 1999 at ., a.m., eastern standard time, at .,
New York, New York to consider and vote upon a proposal to adopt the Agreement
and Plan of Merger, dated as of September 6, 1999, as amended and restated as
of October 8, 1999 and as of November ., 1999, among CBS, Viacom Inc., a
Delaware corporation, and Viacom/CBS LLC, a Delaware limited liability company,
a copy of which is attached as Annex A to the joint proxy statement/prospectus
that accompanies this notice. The merger agreement provides for the merger of
CBS with and into Viacom or, under specified circumstances, a wholly owned
subsidiary of Viacom. If the merger agreement is adopted and the merger is
consummated each issued and outstanding share of CBS common stock, par value
$1.00 per share, will be converted into the right to receive 1.085 shares of
Viacom non-voting Class B common stock, par value $.01 per share and each
issued and outstanding share of CBS Series B preferred stock, par value $1.00
per share, will be converted into the right to receive 1.085 shares of Viacom
Series C preferred stock, par value $.01 per share.

   Holders of record of CBS common stock and CBS Series B preferred stock at
the close of business on November 17, 1999, will be entitled to vote at the
special meeting or any adjournments or postponements of the special meeting.

   The Board of Directors of CBS has determined that the merger is in the best
interests of CBS, has unanimously approved the merger and the merger agreement
and unanimously recommends that shareholders vote to adopt the merger
agreement.

   Detailed information concerning the merger, the merger agreement, related
agreements and other related matters is contained in the attached joint proxy
statement/prospectus and its annexes. Please read this information carefully.

   The vote of each CBS shareholder is important. We urge you to mark, sign and
return your proxy card promptly in the enclosed postage-paid envelope to ensure
that your shares of CBS common stock and CBS Series B preferred stock will be
represented at the special meeting. If you attend the special meeting in
person, you will be entitled to vote your shares in person.
<PAGE>


   If you plan to attend the special meeting, please keep the admission ticket
that is attached to your proxy card, and also check the appropriate box on your
proxy card. Shareholders who own shares through banks or brokers and who plan
to attend must send a written notification, along with proof of ownership, such
as a bank or brokerage firm account statement, to the Secretary's Office, CBS
Corporation, 51 West 52nd Street, New York, New York 10019. The names of those
shareholders indicating they plan to attend will be placed on an admission list
held at the entrance to the meeting. Admission tickets will not be mailed in
advance of the meeting.

                                          On behalf of the Board of Directors,

                                          Angeline C. Straka

                                          Secretary
                                          New York, New York

                            YOUR VOTE IS IMPORTANT.
               PLEASE COMPLETE, SIGN, DATE AND RETURN YOUR PROXY.

       HOLDERS OF CBS COMMON STOCK AND CBS SERIES B PREFERRED STOCK
           SHOULD NOT SEND STOCK CERTIFICATES WITH THEIR PROXY CARDS.

                                       2
<PAGE>

               PRELIMINARY PROXY STATEMENT--SUBJECT TO COMPLETION

                               TABLE OF CONTENTS

<TABLE>
<CAPTION>
                                                                           Page
                                                                           ----
<S>                                                                        <C>
QUESTIONS AND ANSWERS ABOUT THE MERGER....................................   1

SUMMARY...................................................................   5
  The Companies...........................................................   5
  Terms of the Merger; What Shareholders Will Receive in the Merger.......   5
  Ownership of Viacom Following the Merger................................   6
  Shareholders Entitled to Vote; Vote Required; Voting Agreement..........   6
  Interests of Directors and Executive Officers of Viacom and CBS.........   6
  Fairness Opinions of Financial Advisors.................................   7
  The Merger..............................................................   7
  Viacom Summary Historical Financial Data................................  10
  CBS Summary Historical Financial Data...................................  11
  Summary Unaudited Viacom/CBS Pro Forma Combined Financial Information...  13
  Unaudited Viacom/CBS Comparative Per Share Data.........................  14
  Comparative Market Prices and Dividends.................................  15

RISK FACTORS..............................................................  17
  Risks Relating to the Merger............................................  17
   Fixed Exchange Ratio May Result in Lower Value of Merger
    Consideration.........................................................  17
   The Merger Is Subject to Review and Approval by the Federal
    Communications Commission which May Delay the Consummation of the
    Merger................................................................  17
   Antitrust Regulatory Agencies May Oppose or Impose Conditions on the
    Merger Which May Delay Completion of the Merger or Lessen the
    Anticipated Benefits of the Merger....................................  17
   Mr. Redstone, Chairman and Chief Executive Officer of Viacom, Will Be
    the Controlling Shareholder and May Therefore Determine the Outcome of
    Most Shareholder Votes................................................  18
   The Combined Company's Corporate Governance Structure Will Be Unusual
    and May Not be Successful.............................................  18
   The Split-off of Blockbuster from Viacom May Not Occur, Which May
    Hinder the Resolution of Management, Systemic, Competitive and Other
    Problems in the Operations of Viacom's Different Businesses and May
    Limit the Expansion of Blockbuster's Business.........................  18
   Viacom May Incur a Significant Loss Resulting from the Split-off of
    Blockbuster...........................................................  19
   Potentially Significant Increase in Depreciation and Amortization May
    Result from Useful Lives Which Are Shorter than Preliminary Estimates
    Reflected in the Pro Forma Financial Statements.......................  19
  Risks Relating to the Combined Company..................................  19
   Competitive Developments and Technologies May Adversely Affect the
    Combined Company's Future Market Share of Entertainment Audiences and
    Customers, Which in Turn May Affect the Combined Company's Advertising
    Revenues and Profitability............................................  19
   Expenditures by Advertisers Tend to Be Seasonal and Cyclical Which
    Could Cause Revenues of the Combined Company from Advertisements to
    Decline Significantly in any Given Period Generally or in Specific
    Markets...............................................................  20
   Acceptance of the Combined Company's Programming by the Public is
    Difficult to Predict, Which Generally Could Lead to Fluctuations in
    Revenues..............................................................  20
   The Combined Company's Revenues are upon the Maintenance of Affiliation
    Agreements............................................................  21
</TABLE>

                                       i
<PAGE>

               PRELIMINARY PROXY STATEMENT--SUBJECT TO COMPLETION

<TABLE>
<CAPTION>
                                                                           Page
                                                                           ----
<S>                                                                        <C>
   Changes in Federal Communications Laws and Regulations May Have an
    Adverse Effect on the Combined Company's Business.....................  21
   The Combined Company Has Environmental, Asbestos and Other Contingent
    Liabilities That Could Have a Significant Impact on the Combined
    Company...............................................................  21

CAUTIONARY STATEMENT CONCERNING FORWARD-LOOKING STATEMENTS................  23

UNAUDITED PRO FORMA COMBINED CONDENSED FINANCIAL INFORMATION..............  24
  Unaudited Viacom/CBS Pro Forma Combined Condensed Financial
   Information............................................................  24
  Unaudited CBS/King World Pro Forma Combined Condensed Financial
   Information............................................................  33

THE VIACOM SHAREHOLDERS CONSENTS AND CBS SHAREHOLDERS' MEETINGS...........  45
  Matters to be Considered at the Shareholders' Meetings..................  45
  Record Date; Shareholders Entitled to Vote; Quorum......................  45
  Votes Required..........................................................  46
  Submission of Proxies...................................................  46
  Submission of Consents..................................................  47
  Revocability of Viacom Consents.........................................  47
  Revocability of CBS Proxies.............................................  47
  Solicitation of Consents and Proxies....................................  47

THE MERGER................................................................  48
  Background to the Merger................................................  48
  Reasons for the Merger and Board Recommendations........................  51
  Opinions of Financial Advisors..........................................  54
  Directors, Management and Corporate Governance of the Combined Company..  69
  Accounting Treatment....................................................  72
  Federal Income Tax Consequences.........................................  72
  Merger Consideration....................................................  74
  Conversion of Shares; Procedures for Exchange of Certificates;
   Fractional Shares......................................................  75
  Litigation..............................................................  75
  Effective Time of the Merger............................................  76
  Federal Securities Laws Consequences....................................  76
  Stock Exchange Quotation................................................  76
  Dissenters' and Appraisal Rights........................................  76
  Delisting and Deregistration of CBS Common Stock........................  76

THE MERGER AGREEMENT AND RELATED AGREEMENTS...............................  77
  The Merger Agreement....................................................  77
  The Voting Agreement....................................................  84
  The Stockholder Agreement...............................................  85

INTERESTS OF PERSONS IN THE MERGER--SENIOR MANAGEMENT ARRANGEMENTS........  86
  Viacom..................................................................  86
  CBS.....................................................................  88

THE COMPANIES.............................................................  90
  Viacom's Business.......................................................  90
  CBS' Business...........................................................  92
</TABLE>


                                       ii
<PAGE>


            PRELIMINARY PROXY STATEMENT--SUBJECT TO COMPLETION

<TABLE>
<CAPTION>
                                                                           Page
                                                                           ----
<S>                                                                        <C>
REGULATORY MATTERS AND THIRD-PARTY APPROVALS..............................  93
  Antitrust...............................................................  93
  Federal Regulation of Television and Radio Broadcasting.................  93
  Other Regulations, Legislation and Recent Developments Affecting
   Broadcast Stations.....................................................  97
  Internet................................................................  98

DESCRIPTION OF VIACOM CAPITAL STOCK FOLLOWING THE MERGER..................  99
  Viacom Class A Common Stock.............................................  99
  Viacom Class B Common Stock.............................................  99
  Voting and Other Rights of Viacom Common Stock..........................  99
  Viacom Preferred Stock.................................................. 100
  Other Viacom Preferred Stock............................................ 101

COMPARISON OF RIGHTS OF HOLDERS OF VIACOM COMMON STOCK AND CBS COMMON
 STOCK.................................................................... 103

ADOPTION OF RESTATED CERTIFICATE OF INCORPORATION......................... 137

AMENDMENT TO THE VIACOM 1997 LONG-TERM MANAGEMENT INCENTIVE PLAN.......... 138

SHAREHOLDER PROPOSALS..................................................... 140

LEGAL MATTERS............................................................. 141

EXPERTS................................................................... 141

WHERE YOU CAN FIND MORE INFORMATION AND INCORPORATION OF DOCUMENTS BY
 REFERENCE................................................................ 141
  Viacom.................................................................. 142
  CBS..................................................................... 142
</TABLE>

<TABLE>
 <C>        <S>
    ANNEXES
    Annex A Agreement and Plan of Merger
    Annex B Restated Certificate of Incorporation
    Annex C By-laws
    Annex D Voting Agreement
    Annex E Stockholder Agreement
    Annex F Sumner Redstone's Employment Agreement
    Annex G Mel Karmazin's Employment Agreement
    Annex H Opinion of Morgan Stanley & Co. Incorporated
    Annex I Opinion of Evercore Group Inc.
</TABLE>

                                      iii
<PAGE>

                    QUESTIONS AND ANSWERS ABOUT THE MERGER

Q:   Why are the two companies proposing to merge?

A:   Viacom and CBS believe that the merger advances the vision we share of
     building the preeminent global media and entertainment company. The
     combination of our companies, our powerful brands and our highly
     complementary businesses will create a company we believe is uniquely
     qualified to capitalize on new opportunities domestically and around the
     world.

     To review the reasons for the merger in greater detail, see pages .
     through . and . through ..

Q:   What will I receive in the merger?

A:   Viacom Shareholders: You will retain the shares of Viacom common stock
     you currently own.

     CBS Holders of Common Stock: You will be entitled to receive 1.085 shares
     of Viacom non-voting Class B common stock in exchange for each share of
     CBS common stock you own. Viacom will not issue fractional shares.
     Instead, you will receive a payment equal to the market value of the
     fractional share.

     For example:

    . If you currently own 1,000 shares of CBS common stock, then after the
      merger you will be entitled to receive 1,085 shares of Viacom non-
      voting Class B common stock.

    . If you currently own 100 shares of CBS common stock, then after the
      merger you will be entitled to receive 108 shares of Viacom non-voting
      Class B common stock and a check for the market value of the 0.5
      fractional share of Viacom non-voting Class B common stock.

     CBS Holders of Preferred Stock: You will be entitled to receive 1.085
     shares of Viacom Series C preferred stock in exchange for each share of
     CBS Series B preferred stock you own. Viacom will not issue fractional
     shares. Instead, you will receive a payment equal to the market value of
     the Viacom Class B common stock into which the fractional share would be
     convertible. Each share of Viacom Series C preferred stock has the voting
     power of 100 shares of Viacom Class A common stock and is convertible at
     the option of the holder into 1,000 shares of Viacom non-voting Class B
     common stock.

     On November 9, 1999, the closing price per share on the NYSE of Viacom
     Class B common stock was $44.1875 and of CBS common stock was $47.75.

Q:   As a shareholder, how will the merger affect me?

A:   Viacom Shareholders: After the merger, each share of Viacom common stock
     that you own will represent a smaller ownership percentage of a
     significantly larger company.

     CBS Holders of Common Stock and Preferred Stock: After the merger, you
     will own shares of a combined company that will own the assets of both
     Viacom and CBS. The name of the combined company will be Viacom Inc.
     Holders of CBS common stock will receive shares of Viacom non-voting
     Class B common stock. Holders of CBS Series B preferred stock will
     receive shares of Viacom Series C preferred stock. All of the Viacom
     voting rights presently are held by the holders of Viacom Class A common
     stock. A majority of the Viacom Class A common stock is held by National
     Amusements, Inc. which, in turn, is controlled by Sumner Redstone, the
     Chairman and Chief Executive Officer of Viacom.


Q:   Who will manage the combined company after the merger?

A:   Following the merger, the Board of Directors of the combined company will
     be
                                       1
<PAGE>

     expanded from ten to 18 directors. The eight additional directors will
     initially be selected from and designated by the Board of Directors of
     CBS and vacancies in this group will be filled during the initial three-
     year term by independent directors designated by the remaining CBS
     directors.

     Mr. Redstone will continue to serve as Chairman and Chief Executive
     Officer of the combined company and will be responsible, in consultation
     with the President and Chief Operating Officer, for corporate policy and
     strategy.

     Mel Karmazin, the current President and Chief Executive Officer of CBS,
     will serve as President and Chief Operating Officer of the combined
     company, will report directly to the CEO of the combined company and
     consult with the CEO on all major decisions and will supervise,
     coordinate and manage the combined company's business.

     In a number of areas, such as approving larger transactions, Mr. Karmazin
     may not act without the approval of, and the combined company's board may
     act by, a majority of the directors. Ten of the 18 directors of the
     combined company are expected to be designees of Viacom or their
     successors and could therefore control actions which may be taken by a
     majority of the combined company's directors. In all other areas, Mr.
     Karmazin's authority to manage the combined company may be limited only
     by approval of a supermajority of at least 14 directors. As a result, Mr.
     Karmazin will have an unusual degree of autonomy for a President and COO
     of a large corporation.

     The governance arrangements described above will be in effect for a
     period of three years from the closing of the merger, unless 14 of the 18
     directors determine to modify these arrangements or Mr. Karmazin is not
     the COO or CEO of the combined company.

     The governing structure of the combined company during this three year
     period is an important part of the merger. We recommend that you read the
     complete explanation of this structure on pages . through . carefully, as
     well as the complete text of the proposed new Restated Certificate of
     Incorporation attached as Annex B to this joint proxy
     statement/prospectus.

                                       2
<PAGE>


Q:   What am I being asked to approve or vote upon?

A:   Viacom Class A Shareholders: You are being asked to approve by written
     consent all of the following:

    1. if the merger is structured as a merger of CBS into Viacom, the merger
       agreement;

    2. if the merger is structured as a merger of CBS into Viacom/CBS LLC,
       the adoption of the proposed new Restated Certificate of Incorporation
       of Viacom;

    3. if the merger is structured as a merger of CBS into Viacom/CBS LLC,
       the issuance of up to        shares of Viacom Class B common stock to
       the holders of CBS common stock and up to        shares of Viacom
       Series C preferred stock to the holders of CBS Series B preferred
       stock in the merger, in accordance with the terms set forth in the
       merger agreement; and

    4. the amendment to increase the number of shares of Viacom Class B
       common stock authorized to be issued under the Viacom incentive plan
       by an additional 10 million shares.


     CBS Holders of Common Stock and Preferred Stock: You are being asked to
     vote for the adoption of the merger agreement.


Q:   What do I need to do now?

A:   Viacom Class A Shareholders: After carefully reading and considering the
     information contained in this joint proxy statement/prospectus, complete
     the enclosed consent card and sign and submit it in the enclosed return
     envelope as soon as possible. If you sign and submit your consent card
     but do not indicate whether you consent to any individual proposal, your
     consent card will be counted as a consent to the adoption of the merger
     and the proposed new Viacom Restated Certificate of Incorporation, and
     the issuance of shares of Viacom Class B common stock and Viacom Series C
     preferred stock in connection with the merger and the amendment to
     Viacom's incentive plan. If you do not submit a properly executed consent
     card, it will have the effect of counting your shares as not approving
     the adoption of the merger agreement and the proposed new Viacom Restated
     Certificate of Incorporation and the issuance of Viacom Class B common
     stock and Viacom Series C preferred stock in connection with the merger
     and the amendment to Viacom's incentive plan.

     CBS Holders of Common Stock and Preferred Stock: After carefully reading
     and considering the information contained in this joint proxy
     statement/prospectus, indicate on the enclosed proxy card how you want to
     vote, and sign and submit it in the enclosed return envelope as soon as
     possible so that your shares may be represented at the special meeting.
     If you sign and submit your proxy card but do not indicate how you want
     to vote, your shares will be voted in favor of the adoption of the merger
     agreement. If you do not vote or you abstain, it will have no effect on
     whether the proposal is passed.

Q:   If my shares are held in the name of my broker, will my broker give
     consent or vote for me?

A:   Viacom Class A Shareholders: Your broker will execute a written consent
     for your shares only if you provide instructions to do so. Without
     instructions, your broker will not execute a written consent for your
     shares.

     CBS Holders of Common Stock and Preferred Stock: Your broker will vote
     your shares only if you provide instructions on how to vote. You should
     instruct your broker to vote your shares according to your directions.
     Without instructions, your shares will not be voted.

                                       3
<PAGE>


Q:    Can I revoke my consent card or change my vote after I have submitted my
      signed consent card or proxy card?

A:    Viacom Class A Shareholders: You can revoke your consent or, if you have
      previously revoked your consent, submit a new written consent at any time
      prior to the time that consents from the holders of a majority of the
      outstanding Viacom Class A common stock are delivered to Viacom, which is
      expected to occur at 12:00 noon on ., 1999, by sending your revocation or
      new written consent to Viacom at the address indicated below.

      CBS Holders of Common Stock and Preferred Stock: You can change your vote
      at any time before your proxy is voted at the special meeting. You can do
      this in one of the following three ways:

    . First, you can send a written notice stating that you would like to
      revoke your proxy to the appropriate company at the address indicated
      below.

    . Second, you can complete and submit a new proxy card to the appropriate
      company at the address indicated below.

    . Third, you can attend the special meeting and vote in person. Simply
      attending the meeting, however, will not revoke your proxy; you must
      vote at the special meeting. If you have instructed a broker to vote
      your shares, you must follow directions received from your broker to
      change your vote.

Q:    Should I send in my stock certificates now?

A:    Viacom Shareholders: No. You will keep the stock certificates you
      currently own.

      CBS Holders of Common Stock and Preferred Stock: No. After the merger is
      completed, Viacom will appoint an exchange agent to coordinate the
      exchange of your shares of CBS common stock or preferred stock for shares
      of Viacom non-voting Class B common stock or Viacom Series C preferred
      stock. The exchange agent will send you written instructions on how to
      exchange your stock certificates.

Q:    When do you expect the merger to be completed?

A:    We are working to complete the merger as soon as possible. In addition to
      shareholder approvals, we must also obtain regulatory approvals and
      satisfy other conditions set forth in the merger agreement. We hope to
      complete the merger in the first half of 2000.

Q:    What are the tax consequences of the merger to me?

A:    Viacom Shareholders: There will be no tax consequences to you as a result
      of the merger.

      CBS Holders of Common Stock and Preferred Stock: The exchange of CBS
      common stock for Viacom non-voting Class B common stock and the exchange
      of CBS Series B preferred stock for Viacom Series C preferred stock will
      be tax-free for federal income tax purposes. However, you will have to
      pay taxes on the payments received for fractional shares. We recommend
      that you read the complete explanation of the tax consequences on pages .
      through . carefully.

Q:    Who can help answer my questions?

A:    If you would like additional copies of this joint proxy
      statement/prospectus, or if you have questions about the merger, you
      should contact:

                              VIACOM SHAREHOLDERS:
                                  Viacom Inc.
                                 1515 Broadway
                                   53rd Floor
                            New York, New York 10036
                         Attention: Investor Relations
                          Phone Number: (212) 258-6700

                               CBS SHAREHOLDERS:
                                CBS Corporation
                              40 West 57th Street
                            New York, New York 10019
                         Attention: Investor Relations
                          Phone Number: (212) 314-9209

                                       4
<PAGE>

                                    SUMMARY

   This summary highlights selected information from this joint proxy
statement/prospectus, and may not contain all of the information that is
important to you. To understand the merger fully and for a complete description
of the legal terms of the merger, you should read carefully this entire joint
proxy statement/prospectus and the documents to which we have referred you. See
"Where You Can Find More Information" on page . . The merger agreement is
attached as Annex A to this joint proxy statement/prospectus. We encourage you
to read the merger agreement, as it is the legal document that governs the
merger.

The Companies

Viacom Inc.
1515 Broadway
New York, NY 10036
(212) 258-6000

   Viacom Inc. is a diversified entertainment company with operations in six
segments: (1) Networks, (2) Entertainment, (3) Video, (4) Parks, (5) Publishing
and (6) Online. The Networks segment operates MTV: Music Television(R),
Showtime(R), Nickelodeon(R), Nick at Nite(R), VH1 Music First(R) and TV
Land(R), among other program services. The Entertainment segment, which
includes Paramount Pictures(R), Paramount Television(R), Paramount Stations
Group and Spelling Entertainment Group Inc., produces and distributes
theatrical motion pictures and television programming and operates or programs
19 broadcast television stations. The Video segment consists of an
approximately 82% interest in Blockbuster Inc. (NYSE: BBI) which operates and
franchises Blockbuster Video(R) stores worldwide. The Parks segment, through
Paramount Parks(R), owns and operates five theme parks and a themed attraction
in the U.S. and Canada. The Publishing segment publishes and distributes
consumer books and related multimedia products under such imprints as Simon &
Schuster(R). The Online segment provides online music and children destinations
featuring entertainment, information, community tools and e-commerce.

CBS Corporation
51 West 52nd Street
New York, NY 10019
(212) 975-4321

   CBS is one of the largest radio and television broadcasters in the United
States. CBS operates its business through its Television, Cable and Infinity
segments. The Television segment consists of CBS' 16 owned and operated
television stations and the CBS television network, which includes CBS'
Internet businesses. CBS acquired television broadcast station KTVT-TV Dallas-
Fort Worth, Texas on October 12, 1999. CBS acquired King World Productions,
Inc., the distributor of a number of shows, including "The Oprah Winfrey Show",
on November ., 1999. The Cable segment includes CBS' cable networks, consisting
of The Nashville Network, Country Music Television and two regional sports
networks. The Infinity segment corresponds to Infinity Broadcasting Corporation
(NYSE: INF), which conducts CBS' radio and outdoor advertising business.

   CBS' Internet businesses include its operation of the Internet sites CBS.com
and Country.com, as well as its investments in SportsLine USA, Inc.,
MarketWatch.com, Inc. and other Internet businesses.

   CBS, through Infinity, has entered into a definitive agreement to acquire
Outdoor Systems, Inc., a leading outdoor advertising company in North America.
CBS believes that this transaction will be completed by the end of 1999.

Terms of the Merger; What Shareholders Will Receive in the Merger

   Either CBS will be merged with and into Viacom and Viacom will be the
surviving corporation or CBS will merge with and into Viacom/CBS LLC and
Viacom/CBS LLC will be the surviving entity and wholly owned by Viacom. The
merger of CBS into Viacom/CBS LLC will occur only if guidance is received from
the IRS or another appropriate governmental authority that the merger of CBS
into Viacom/CBS LLC will not adversely affect the tax treatment of the merger
and if the merger would not result in an adverse tax effect to Viacom, CBS or
their respective shareholders.

                                       5
<PAGE>


   As a result of the merger, each holder of CBS common stock will be entitled
to receive from Viacom 1.085 shares of Viacom non-voting Class B common stock
in exchange for each share of CBS common stock. Viacom Class B common stock is
non-voting stock. Each holder of CBS Series B preferred stock will be entitled
to receive from Viacom 1.085 shares of Viacom Series C preferred stock in
exchange for each share of CBS Series B preferred stock. Each share of Viacom
Series C preferred stock has the voting power of 100 shares of Viacom Class A
common stock, and is convertible into 1,000 shares of Viacom non-voting Class B
common stock. All Viacom voting rights will be held by the holders of Viacom
Class A common stock and the holders of Viacom Series C preferred stock. A
majority of the Viacom Class A common stock is held by National Amusements,
Inc. which, in turn, is controlled by Mr. Redstone.


Ownership of the Combined Company Following the Merger

   We anticipate that holders of CBS common stock will receive approximately
812 million shares of Viacom non-voting Class B common stock in the merger and
that holders of CBS Series B preferred stock will receive Viacom Series C
preferred stock convertible into approximately   million shares of Viacom Class
B common stock. Based on those numbers, immediately following the merger, the
former CBS shareholders will hold an aggregate equity interest in Viacom of
approximately  %. The Viacom voting Class A common stock will continue to be
controlled by National Amusements which, in turn, is controlled by Mr.
Redstone.



Shareholders Entitled to Consent or Vote; Vote Required; Voting Agreements

   Viacom Class A Shareholders: Only shareholders of record at the close of
business on the record date of November ., 1999 will be entitled to take action
by written consent concerning these proposals. On the record date, there were .
shares of Viacom Class A common stock outstanding. Approval of the adoption of
the merger agreement and the proposed new Restated Certificate of
Incorporation, the issuance of Viacom Class B common stock and Viacom Series C
preferred stock in connection with the merger and the amendment to the Viacom
incentive plan will occur when the holders of a majority of the outstanding
Viacom Classs A common stock delivers properly dated and executed consents to
Viacom. A majority of the Viacom Class A common stock is owned by National
Amusements, which, in turn, is controlled by Mr. Redstone. National Amusements
has entered into a voting agreement with CBS pursuant to which it has agreed to
consent to the adoption of the merger agreement and the proposed new Restated
Certificate of Incorporation, and the issuance of Viacom Class B common stock
and Viacom Series C preferred stock in connection with the merger. In addition,
National Amusements has entered into a voting agreement with Viacom pursuant to
which it has agreed to consent to the amendment to Viacom's incentive plan.
Accordingly, it is assured that Viacom shareholder approval of these matters
will be obtained.

   CBS Holders of Common Stock and Preferred Stock: Only shareholders of record
at the close of business on the record date of November 17, 1999 will be
entitled to vote at the special meeting. On the record date, there were .
shares of CBS common stock outstanding and . shares of CBS Series B preferred
stock outstanding. Each holder of CBS Common Stock will have one vote at the
special meeting for each share of CBS common stock owned on the record date.
Each holder of CBS Series B preferred stock will have 1,000 votes at the
special meeting for each share of CBS Series B preferred stock owned on the
record date. A majority of votes cast by all shareholders entitled to vote at
the CBS special meeting is required to adopt the merger agreement. If you sign
and submit your proxy but do not indicate how you want to vote, your proxy will
be counted as a vote in favor of adoption of the merger agreement. If you do
not vote or you abstain, it will have no effect on whether the proposal is
passed. On the record date, directors and executive officers of CBS and its
affiliates were entitled to vote . shares of CBS common stock, or approximately
 . % of the shares of CBS common stock outstanding on the record date, and no
shares of CBS Series B preferred stock.

Interests of Directors and Executive Officers of Viacom and CBS

   A number of directors and executive officers of CBS and Viacom have
interests in the merger as

                                       6
<PAGE>


employees and/or directors that are different from, or in addition to, your
interests as a shareholder. If the merger is completed, several of the
directors and members of the existing senior management of each of CBS and
Viacom will be designated as members of the initial Board of Directors and
senior management of the combined company after the merger. Mr. Redstone and
Mr. Karmazin have entered into employment agreements providing for their
employment as Chairman and CEO and President and COO, respectively, following
the merger. Also, indemnification arrangements for existing directors and
officers of CBS and Viacom will be continued.



Fairness Opinions of Financial Advisors

   In deciding to approve the merger, each Board considered the opinion of its
financial advisor. Viacom received an opinion from its financial advisor,
Morgan Stanley & Co. Incorporated, as to the fairness of the merger to Viacom
from a financial point of view, CBS received an opinion from its financial
advisor, Evercore Group Inc., an affiliate of Evercore Partners Inc., as to the
fairness of the merger to its shareholders from a financial point of view.
These opinions are attached as Annexes H and I, respectively, to this joint
proxy statement/prospectus. The opinions are not a recommendation as to how you
should vote your shares. We encourage you to read these opinions carefully.

The Merger

Conditions to the Merger

   We will complete the merger only if various conditions are satisfied or
waived, including the following:

  . CBS shareholders vote to adopt the merger agreement;

  . Viacom shareholders consent to:

    -  the adoption of the merger agreement if CBS merges into Viacom;

    - the adoption of the proposed new Restated Certificate of
      Incorporation and the issuance of Viacom Class B common stock and
      Viacom Series C preferred stock in connection with the merger, if CBS
      merges into Viacom/CBS LLC;

  . no law or court order prohibits the merger or makes the merger illegal;

  . the registration statement of which this joint proxy statement/prospectus
    forms a part has been declared effective and no stop order suspending its
    effectiveness is in effect;

  . the shares of Viacom Class B common stock to be issued to shareholders of
    CBS in the merger have been authorized for listing by the NYSE, subject
    to official notice of issuance;

  . Viacom and CBS obtain all regulatory approvals necessary to complete the
    merger;

  . each of Viacom and CBS has certified to the other that its
    representations and warranties are true and correct except as would not
    have a material adverse effect and that its material obligations under
    the merger agreement have been complied with in all material respects;
    and

  . Viacom and CBS have each obtained an opinion from their respective tax
    counsel that the merger will be tax-free.

No Solicitation of Competing Transactions

   The merger agreement prohibits CBS from soliciting any proposal from, or
providing information to or negotiating with, another party for the sale or
transfer of more than 35% of the voting power or assets of CBS.

   However, until the CBS shareholders adopt the merger agreement, CBS may
consider an unsolicited proposal for a competing transaction from another party
which CBS' Board of Directors determines in good faith reasonably can be
expected to result in a superior proposal, and CBS may furnish information to
that party. A superior proposal is a proposal to acquire more than 50% of the
voting power or all or substantially all of the assets of CBS for

                                       7
<PAGE>

consideration which the CBS Board determines in good faith is more favorable
than that to be received by CBS shareholders in the merger. CBS must notify
Viacom if it begins to negotiate a competing transaction.

Termination of the Merger Agreement

   The Boards of Directors of both our companies can jointly agree to
terminate the merger agreement at any time without completing the merger. In
addition, the merger agreement may also be terminated:

  . by either company, if the merger is not completed by August 31, 2000;

  . by either company, if the shareholders of CBS do not approve the merger;

  . by either company, if a governmental authority has issued a final and
    nonappealable order permanently prohibiting the merger;

  . by either company, if the other company breaches any of the
    representations or warranties it made in the merger agreement in a manner
    so as to have a material adverse effect on that company, or the other
    company, including, in Viacom's case, Viacom/CBS LLC, materially fails to
    comply with any of the material obligations it has under the merger
    agreement, in either case such that the conditions to closing relating to
    the representations and warranties or covenants would not be satisfied;
    or

  . by CBS, if prior to the adoption of the merger agreement by the CBS
    shareholders CBS gives notice to Viacom of the existence of a superior
    proposal.

Termination Fees

   CBS is required to pay Viacom a termination fee of $1 billion if:

  . (1) Viacom or CBS terminates the merger agreement because the CBS
    shareholders fail to adopt the merger agreement at the CBS special
    meeting, (2) a competing proposal to acquire more than 50% of the voting
    power or assets of CBS has been made public at or prior to the failure to
    adopt the merger agreement and (3) within 12 months after termination, a
    binding agreement to enter into a competing transaction is entered into
    by CBS or a competing transaction is consummated; or

  . CBS terminates the merger agreement because, prior to the adoption of the
    merger agreement by CBS shareholders, CBS gives notice to Viacom of the
    existence of a superior proposal.

Regulatory Approvals

   Under U.S. antitrust laws, we may not complete the merger until we have
notified the Antitrust Division of the Department of Justice and the Federal
Trade Commission of the merger and filed the necessary report forms and until
a required waiting period has ended. Viacom made its notification on September
20, 1999 and CBS made its notification on September 23, 1999. On October 22,
1999, the Antitrust Division of the DOJ issued to the parties a Request for
Additional Information and Documentary Material, which extends the waiting
period until 20 calendar days after the parties substantially comply with the
request. However, the Antitrust Division of the Department of Justice and the
Federal Trade Commission continue to have the authority to challenge the
merger on antitrust grounds before and after the merger is completed.

   Under U.S. federal communications laws, the merger will result in a
transfer of control to Viacom of licenses held by CBS, and, therefore, the
merger requires the prior review and approval of the Federal Communications
Commission. Both Viacom and CBS will request the required approval in an
application to the FCC. The FCC will not permit such applications to be filed
until November 16, 1999, because the application will request authority to own
two television stations in some markets. This application will be subject to
comments by the public, and any decision may be further reviewed or
reconsidered by the FCC or a court. In order to comply with applicable law and
to secure the approval of the FCC, Viacom, CBS or both may need to divest some
or all of their respective interests in a number of radio and television
licenses as well as some or all of Viacom's interest in United Paramount
Network.

                                       8
<PAGE>

Further, Viacom, CBS or both may be required to divest additional broadcast
stations in the event rules recently adopted by the FCC that relax ownership
restrictions fail to become effective, or are stayed, reconsidered or modified
by the FCC or a court.

   Both companies are required to make filings with or obtain approvals from
other domestic and international regulatory authorities in connection with the
merger.

   We cannot predict whether we will obtain all required regulatory approvals
to complete the merger, or whether any approvals will include conditions that
would be detrimental to CBS or Viacom.

Dissenters' Rights of Appraisal

   Neither Viacom shareholders nor CBS shareholders have dissenters' rights to
an appraisal of the value of their shares in connection with the merger.

Federal Income Tax Consequences

   Viacom tax counsel and CBS tax counsel will each provide an opinion that CBS
shareholders will not be taxed as a result of the exchange of CBS common stock
for Viacom Class B common stock and of CBS Series B preferred stock for Viacom
Series C preferred stock in the merger unless and only to the extent they
receive a payment for fractional shares. Receipt of these opinions is a
condition to the closing of the merger.

   Viacom shareholders will not be taxed as a result of the merger.

Accounting Treatment

   The merger will be accounted for under the purchase method of accounting in
accordance with generally accepted accounting principles. Accordingly, the cost
to acquire CBS will be allocated to the assets acquired and liabilities assumed
based on their fair values, with any excess being treated as goodwill and
amortized over its estimated useful life.

Risk Factors

   There are risk factors relating to the merger and the combined company that
both Viacom and CBS shareholders should consider in evaluating how to vote at
the special meeting. These risk factors are described in detail in "Risk
Factors" beginning on page . .


Surrender of Stock Certificates

   Following the merger, Viacom will appoint an exchange agent who will
instruct the CBS shareholders on the procedure to follow to surrender their
stock certificates of CBS common stock in exchange for stock certificates of
Viacom non-voting Class B common stock and of CBS Series B preferred stock in
exchange for stock certificates of Viacom Series C preferred stock. Upon
surrender of the stock certificates, CBS shareholders will be entitled to
receive a payment for the value of any fractional shares.

                                    *  *  *

                                       9
<PAGE>


                 Viacom Summary Historical Financial Data

   The summary consolidated financial data presented below have been derived
from, and should be read together with, Viacom's audited consolidated financial
statements and the accompanying notes included in Viacom's annual report on
Form 10-K for the year ended December 31, 1998 and the unaudited interim
consolidated financial statements and the accompanying notes included in
Viacom's quarterly report on Form 10-Q for the quarterly period ended June 30,
1999, both of which are incorporated by reference into this joint proxy
statement/prospectus. The historical financial data presented below include the
results of Paramount Communications Inc. after its acquisition by Viacom on
March 11, 1994 and the results of Blockbuster Entertainment Corporation after
its acquisition by Viacom on September 29, 1994.

                       Statement of Operations Data
                    (in millions, except per share amounts)

<TABLE>
<CAPTION>
                          Six Months Ended
                              June 30,             Year Ended December 31,
                          -----------------  -------------------------------------
                            1999     1998     1998     1997    1996   1995   1994
                          -------- --------  -------  ------- ------ ------ ------
                             (Unaudited)
<S>                       <C>      <C>       <C>      <C>     <C>    <C>    <C>
Revenues................  $  5,954 $  5,465  $12,096  $10,685 $9,684 $8,700 $4,486
Operating income........  $    560 $     48  $   752  $   685 $1,197 $1,247 $  354
Earnings (loss) from
 continuing operations..  $    128 $   (220) $   (44) $   374 $  152 $   88 $   19
Net earnings (loss).....  $    104 $   (279) $  (122) $   794 $1,248 $  223 $   90
Net earnings (loss)
 attributable to common
 stock..................  $     92 $   (309) $  (150) $   734 $1,188 $  163 $   15
Earnings (loss) per
 common share:
Basic:
  Earnings (loss) from
   continuing
   operations...........  $    .17 $   (.35) $  (.10) $   .44 $  .13 $  .04 $ (.14)
  Net earnings (loss)...  $    .13 $   (.43) $  (.21) $  1.04 $ 1.63 $  .22 $  .04
Diluted:
  Earnings (loss) from
   continuing
   operations...........  $    .16 $   (.35) $  (.10) $   .44 $  .13 $  .04 $ (.13)
  Net earnings (loss)...  $    .13 $   (.43) $  (.21) $  1.04 $ 1.62 $  .22 $  .03
</TABLE>

                            Balance Sheet Data
                                 (in millions)

<TABLE>
<CAPTION>
                                                 As of December 31,
                             As of     ---------------------------------------
                         June 30, 1999  1998    1997    1996    1995    1994
                         ------------- ------- ------- ------- ------- -------
                          (Unaudited)
<S>                      <C>           <C>     <C>     <C>     <C>     <C>
Total assets............    $23,803    $23,613 $28,289 $28,834 $28,991 $28,274
Total long-term debt,
 net of current
 portion................    $ 6,424    $ 3,813 $ 7,423 $ 9,856 $10,712 $10,402
Shareholders' equity....    $11,215    $12,050 $13,384 $12,587 $12,094 $11,792
</TABLE>

                                       10
<PAGE>


                   CBS Summary Historical Financial Data

   The selected consolidated historical financial data presented below have
been derived from, and should be read together with, the CBS audited
consolidated financial statements and the accompanying notes included in CBS'
Annual Report on Form 10-K for the year ended December 31, 1998 and the
unaudited interim consolidated financial statements and the accompanying notes
included in CBS' quarterly report on Form 10-Q for the six months ended June
30, 1999, which are incorporated by reference in this joint proxy statement/
prospectus. The historical financial data presented below include the results
of CBS Radio Inc., formerly American Radio Systems Corporation, after its
acquisition by CBS on June 4, 1998, the results of The Nashville Network and
Country Music Television, Gaylord Entertainment Company's two major cable
networks, after their acquisition by CBS on September 30, 1997, the results of
Infinity Media Corporation, formerly known as Infinity Broadcasting
Corporation, after its acquisition by CBS on December 31, 1996 and the results
of CBS Inc. after its acquisition by CBS, formerly Westinghouse Electric
Corporation, on November 24, 1995.

                          Statement of Operations Data
                    (in millions, except per share amounts)

<TABLE>
<CAPTION>
                            Six Months
                          Ended June 30,         Year Ended December 31,
                          ----------------  -------------------------------------
                           1999     1998     1998    1997    1996    1995   1994
                          -------  -------  ------  ------  ------  ------  -----
                            (Unaudited)
<S>                       <C>      <C>      <C>     <C>     <C>     <C>     <C>
Revenues................  $ 3,446  $ 3,433  $6,805  $5,367  $4,143  $1,074  $ 744
Operating profit........      412      263     482     253      54     160    151
Interest expense........      (97)    (160)   (370)   (386)   (401)   (184)   (26)
Income (loss) from
 Continuing Operations
 before income taxes and
 minority interest......      309      120     155     (59)   (292)    128     (6)
Income tax (expense)
 benefit................     (176)     (95)   (161)    (73)     71     (75)     1
Income (loss) from
 Continuing Operations..      103       23     (12)   (131)   (221)     47    (10)
Income (loss) from
 Discontinued
 Operations.............      384      --      --      680     409     (57)    58
Extraordinary item, net
 of income taxes........       (5)     --       (9)    --      (93)    --     --
Net income (loss).......      482       23     (21)    549      95     (10)    48
Basic earnings (loss)
 per common share:
 Continuing Operations..  $   .15  $   .03  $ (.02) $ (.24) $ (.67) $ (.09) $(.27)
 Discontinued
  Operations............      .55      --      --     1.08    1.02    (.16)   .16
 Extraordinary item.....     (.01)     --     (.01)    --     (.23)    --     --
                          -------  -------  ------  ------  ------  ------  -----
Basic earnings (loss)
 per common share.......  $   .69  $   .03  $ (.03) $  .84  $  .12  $ (.25) $(.11)
                          =======  =======  ======  ======  ======  ======  =====
Diluted earnings (loss)
 per common share:
 Continuing Operations..  $   .15  $   .03  $ (.02) $ (.24) $ (.67) $ (.09) $(.27)
 Discontinued
  Operations............      .54      --      --     1.08    1.02    (.16)   .16
 Extraordinary item.....     (.01)     --     (.01)    --     (.23)    --     --
                          -------  -------  ------  ------  ------  ------  -----
Diluted earnings (loss)
 per common share.......  $   .68  $   .03  $ (.03) $  .84  $  .12  $ (.25) $(.11)
                          =======  =======  ======  ======  ======  ======  =====
Dividends per common
 share..................  $   --   $   .05  $  .05  $  .20  $  .20  $  .20  $ .20
                          =======  =======  ======  ======  ======  ======  =====
</TABLE>


                                       11
<PAGE>

                               Balance Sheet Data
                                 (in millions)

<TABLE>
<CAPTION>
                               As of              As of December 31,
                             June 30,   ---------------------------------------
                               1999      1998    1997    1996    1995    1994
                            ----------- ------- ------- ------- ------- -------
                            (Unaudited)
<S>                         <C>         <C>     <C>     <C>     <C>     <C>
Total assets--Continuing
 Operations...............    $20,358   $20,139 $16,503 $15,406 $10,391 $ 2,524
Total assets--Discontinued
 Operations...............        861     1,919   4,101   5,710   8,157   9,273
                              -------   ------- ------- ------- ------- -------
Total assets..............    $21,219   $22,058 $20,604 $21,116 $18,548 $11,797
                              =======   ======= ======= ======= ======= =======
Long-term debt--Continuing
 Operations...............    $ 2,111   $ 2,506 $ 3,236 $ 5,147 $ 7,222 $ 1,865
Long-term debt--
 Discontinued Operations..        408       382     440     419     161     589
                              -------   ------- ------- ------- ------- -------
Total long-term debt......    $ 2,519   $ 2,888 $ 3,676 $ 5,566 $ 7,383 $ 2,454
                              =======   ======= ======= ======= ======= =======
Total debt--Continuing
 Operations...............    $ 2,190   $ 2,665 $ 3,387 $ 5,635 $ 7,840 $ 2,471
Total debt--Discontinued
 Operations...............        429       428     543     439     528   1,266
                              -------   ------- ------- ------- ------- -------
Total debt................    $ 2,619   $ 3,093 $ 3,930 $ 6,074 $ 8,368 $ 3,737
                              =======   ======= ======= ======= ======= =======
Shareholders' equity......    $ 9,695   $ 9,054 $ 8,080 $ 5,731 $ 1,453 $ 1,789
                              =======   ======= ======= ======= ======= =======
</TABLE>

                                       12
<PAGE>


     Summary Unaudited Viacom/CBS Pro Forma Combined Financial Information

   The following summary unaudited pro forma combined financial information is
derived from and should be read together with the information provided in the
section, "Unaudited Viacom/CBS Pro Forma Combined Condensed Financial
Information" and the notes thereto. The summary unaudited pro forma combined
financial information is based upon the historical financial statements of
Viacom, adjusted for the initial public offering of Blockbuster and other
related transactions, and the historical financial statements of CBS, adjusted
for the acquisition of American Radio and the pending acquisitions of King
World and Outdoor Systems, Inc. The unaudited pro forma combined condensed
statement of operations data for the six months ended June 30, 1999 and the
year ended December 31, 1998 is presented as if the merger of Viacom and CBS
and all other aforementioned transactions had occurred on January 1, 1998. The
unaudited pro forma combined balance sheet data at June 30, 1999 is presented
as if the merger of Viacom and CBS and all other aforementioned transactions
had occurred on June 30, 1999.

   The summary unaudited pro forma combined financial data is for illustrative
purposes only and does not necessarily indicate the operating results or
financial position that would have been achieved had the merger of Viacom and
CBS and all other aforementioned transactions been completed as of the dates
indicated or of the results that may be obtained in the future. In addition,
the data does not reflect synergies that might be achieved from combining these
operations.

           Unaudited Pro Forma Combined Statement of Operations Data
                    (in millions, except per share amounts)

<TABLE>
<CAPTION>
                                                Six Months
                                                   Ended        Year Ended
                                               June 30, 1999 December 31, 1998
                                               ------------- -----------------
<S>                                            <C>           <C>
Revenues......................................    $10,144         $20,457
Operating income..............................    $   720         $   695
Earnings (loss) from continuing operations
 before income taxes and minority interest....    $   305         $  (369)
Loss from continuing operations...............    $  (149)        $  (776)
Net loss from continuing operations
 attributable to common stock.................    $  (162)        $  (803)
Basic and diluted loss from continuing
 operations per share.........................    $  (.11)        $  (.53)
Weighted average shares outstanding:
  Basic.......................................      1,505           1,521
  Diluted.....................................      1,505           1,521
</TABLE>

                Unaudited Pro Forma Combined Balance Sheet Data
                                 (in millions)

<TABLE>
<CAPTION>
                                                                At June 30, 1999
                                                                ----------------
<S>                                                             <C>
Total assets...................................................     $77,559
Total long-term debt, net of current portion...................     $ 9,805
Shareholders' equity...........................................     $47,530
</TABLE>

                                       13
<PAGE>

                Unaudited Viacom/CBS Comparative Per Share Data

   The following tables present the Viacom and CBS historical and pro forma
combined and CBS pro forma equivalent comparative per share data for the six
months ended or at June 30, 1999 and the twelve months ended or at December 31,
1998.

<TABLE>
<CAPTION>
                                                   Pro Forma Combined as       CBS
Six Months Ended           Viacom                   Adjusted for Other      Pro Forma
or at June 30, 1999      Historical CBS Historical     Viacom Events     Equivalent(/3/)
- -------------------      ---------- -------------- --------------------- ---------------
<S>                      <C>        <C>            <C>                   <C>
Earnings (loss) per
 common share from
 continuing
 operations(/1/):
  Basic.................   $  .17       $  .15            $ (.11)            $ (.12)
  Diluted...............      .16          .15              (.11)              (.12)
Book value per common
 share(/2/):
  Basic.................   $16.29       $13.96            $31.68             $34.37
  Diluted...............    15.98        13.64             31.41              34.08
Cash dividends per
 common share...........      --           --                --                 --
<CAPTION>
                                                   Pro Forma Combined as       CBS
Twelve Months Ended        Viacom                   Adjusted for Other      Pro Forma
or at December 31, 1998  Historical CBS Historical     Viacom Events     Equivalent(/3/)
- -----------------------  ---------- -------------- --------------------- ---------------
<S>                      <C>        <C>            <C>                   <C>
Earnings (loss) per
 common share from
 continuing
 operations(/1/):
  Basic.................   $ (.10)      $ (.02)           $ (.53)            $ (.57)
  Diluted...............     (.10)        (.02)             (.53)              (.57)
Book value per common
 share(/2/):
  Basic.................   $17.34       $13.12            $32.09             $34.82
  Diluted...............    17.07        12.85             31.86              34.57
Cash dividends per
 common share...........      --        $  .05               --                 --
</TABLE>
- --------
(/1/)  The weighted average common shares outstanding used in calculating pro
       forma combined basic and diluted earnings (loss) from continuing
       operations per common share, as adjusted for all transactions, are
       calculated assuming that the estimated number of shares of Viacom common
       stock to be issued in the merger were outstanding from January 1, 1998.
       For both periods presented, the weighted average common shares
       outstanding used in calculating pro forma combined diluted earnings
       (loss) from continuing operations per common share do not include the
       impact of Viacom stock options, as they are antidilutive.
(/2/)  The book value per common share amounts of Viacom and CBS were calculated
       by dividing shareholders' equity by the number of common shares
       outstanding at the end of the period. The common shares outstanding used
       in calculating basic pro forma combined book value per share include
       approximately 688 million and approximately 695 million of Viacom common
       shares outstanding at June 30, 1999 and December 31, 1998, respectively,
       plus approximately 812 million shares representing the estimated number
       of common shares to be issued in the merger. (See Note 2 to the
       Unaudited Viacom/CBS Pro Forma Combined Condensed Financial Statements.)
       The common shares outstanding used in calculating diluted pro forma
       combined book value per common share as of June 30, 1999 and December
       31, 1998 include the Viacom common shares, plus the estimated number of
       common shares to be issued in the merger, as well as the dilutive impact
       of Viacom options to purchase shares of common stock, and totaled
       approximately 1.5 billion for both periods.
(/3/)  CBS pro forma equivalent amounts are calculated by multiplying the
       respective pro forma combined per common share amounts by the exchange
       ratio of 1.085.

                                       14
<PAGE>

                    Comparative Market Prices and Dividends

   Viacom Class A common stock and Class B common stock are listed and traded
on the NYSE under the symbols "VIA" and "VIA.B," respectively. CBS common stock
is listed and traded on the NYSE under the symbol "CBS."

   On February 25, 1999, the Board of Directors of Viacom declared a 2-for-1
common stock split, to be effected in the form of a dividend. The additional
shares were issued on March 31, 1999 to shareholders of record on March 15,
1999. All common share and per share amounts have been adjusted to reflect the
stock split for all periods presented.

   The following tables set forth, for the calendar periods indicated, the per
share range of high and low sales prices for Viacom Class A common stock,
Viacom non-voting Class B common stock and CBS common stock as reported on the
NYSE or by the American Stock Exchange, together with the dividend declaration
history of Viacom and CBS. Only shares of Viacom non-voting Class B common
stock will be issued to shareholders of CBS in the merger in exchange for their
shares of CBS common stock.

<TABLE>
<CAPTION>
                             Viacom Class A              Viacom Class B
                            Common Stock(/1/)           Common Stock(/1/)
                         ----------------------      -----------------------
                           High          Low           High           Low
                         ---------     --------      ---------     ---------
<S>                      <C>           <C>           <C>            <C>
1997
  1st Quarter........... $  18 9/16    $  16         $  18 15/16    $ 16
  2nd Quarter...........    17 23/32      12 5/8        18            12 5/8
  3rd Quarter...........    17 3/8        13 3/4        17 9/16       13 5/8
  4th Quarter...........    20 7/8        13            21 1/8        13 1/4
1998
  1st Quarter........... $  27 1/8     $  19 15/16   $  27 17/32    $ 20 1/4
  2nd Quarter...........    30 1/2        26 1/8        30 5/8        26 13/32
  3rd Quarter...........    34 11/16      24 5/8        35            24 3/4
  4th Quarter...........    36 29/32      25 7/16       37 1/8        25 163/512
1999
  1st Quarter........... $  45 1/2     $  35 5/16    $  45 15/16    $ 35 3/8
  2nd Quarter(/2/)......    48 3/4        36 11/16      49 3/16       36 5/8
  3rd Quarter...........    49 5/8        38 7/16       48 3/4        38 9/16
  4th Quarter (through
   November 9, 1999)....    47 1/4        40 5/16       46 7/16       39 13/16
</TABLE>
- --------
(/1/) Viacom has not declared cash dividends on its Class A or Class B common
      stock and has no present intention of doing so.
(/2/) As of April 8, 1999, Viacom Class A and Class B common stock ceased
      trading on the American Stock Exchange and commenced trading on the NYSE.

                                       15
<PAGE>

<TABLE>
<CAPTION>
                                                 CBS Common Stock
                                             ----------------------------------
                                                                   Dividends
                                             High      Low       per Share(/1/)
                                             ----      ----      --------------
<S>                                          <C>       <C>       <C>
1997
  1st Quarter............................... $20 3/8   $16 3/4        $.05
  2nd Quarter...............................  23 13/16  16             .05
  3rd Quarter...............................  27 15/16  22 3/4         .05
  4th Quarter...............................  32 1/16   23 3/8         .05
1998
  1st Quarter............................... $34 3/16  $26 3/4        $.05
  2nd Quarter...............................  36 5/8    29 11/16       --
  3rd Quarter...............................  35 1/2    21 7/8         --
  4th Quarter...............................  33 1/8    18             --
1999
  1st Quarter............................... $41 5/8   $31 11/16       --
  2nd Quarter...............................  47 5/16   39 3/16        --
  3rd Quarter...............................  51 15/16  43 5/8         --
  4th Quarter (through November 9, 1999)....  50 3/4    43 3/16        --
</TABLE>
- --------
(/1/CBS)suspended payments of dividends after it commenced its stock buy-back
    program in March 1998.

   On September 3, 1999, the last trading day prior to the announcement of the
execution of the merger agreement, the last reported closing sale prices per
share of Viacom Class A common stock and Class B common stock were $45 5/16 and
$45 1/16, respectively, and the last reported sale price per share of CBS
common stock was $48 15/16. On ., 1999, the last trading day prior to the
printing of this joint proxy statement/ prospectus, the last reported sale
prices per share of Viacom Class A common stock and Class B common stock were
$. and $., respectively, and the last reported sale price per share of CBS
common stock was $..

   The market prices of shares of Viacom Class A common stock, Viacom Class B
common stock and CBS common stock are subject to fluctuations. As a result,
Viacom and CBS shareholders are urged to obtain current market quotations.

   On the record date, there were approximately . holders of record of Viacom
Class A common stock, approximately . holders of record of Viacom Class B
common stock, approximately . holders of record of CBS common stock and .
holder of record of CBS Series B preferred stock.

                                       16
<PAGE>

                                  RISK FACTORS

   You should consider the following risks in deciding whether to adopt the
merger agreement and approve the related proposals. These matters should be
considered along with the other information included or incorporated by
reference in this joint proxy statement/prospectus. We have separated the risks
into two groups:

  . risks relating to the merger; and

  . risks relating to the combined company.

Risks Relating to the Merger

Fixed Exchange Ratio May Result in Lower Value of Merger Consideration

   Upon completion of the merger, each share of CBS common stock will be
exchanged for 1.085 shares of Viacom non-voting Class B common stock and each
share of CBS Series B preferred stock will be exchanged for 1.085 shares of
Viacom Series C preferred stock, which are convertible into Viacom non-voting
Class B common stock. These exchange ratios are fixed and will not be adjusted
as a result of any increase or decrease in the price of either Viacom non-
voting Class B common stock or CBS common stock. Any change in the price of
Viacom non-voting Class B common stock will affect the value the CBS
shareholders receive in the merger. In addition, because the merger will be
completed only after all the conditions to the merger are satisfied or waived,
including the receipt of regulatory approvals, there is no way to be sure that
the price of Viacom non-voting Class B common stock or CBS common stock at the
time the merger is completed will be the same as their prices on the date of
the special meeting. Changes in the business, operations or prospects of Viacom
or CBS, regulatory considerations, general market and economic conditions and
other factors may affect the prices of Viacom non-voting Class B common stock,
CBS common stock or both. Many of those factors are beyond our control. You are
encouraged to obtain current market quotations for both Viacom non-voting Class
B common stock and CBS common stock.

The Merger Is Subject to Review and Approval by the Federal Communications
Commission Which May Delay the Completion of the Merger and/or Lessen the
Anticipated Benefits of the Merger

   Approval by the FCC is required for the transfer of control to Viacom of the
television and radio station licenses currently held by CBS. An application
will be filed requesting such approval, which will be subject to public
comment. FCC approval will be predicated, in part, on the effectiveness of new
FCC rules permitting a single company to hold two television stations in a
single market and upon the effectiveness of modifications to the former "one-
to-a-market" rule, now called the "radio-television cross-ownership" rule,
which governs the degree of common ownership of television and radio stations
in one market. The FCC will not accept any such applications until the
effective date of these rules, November 16, 1999, which may delay the approval
process. In addition, the combined company may be required under current law to
divest some of its broadcasting assets in order to receive FCC approval.




   In order to consummate the merger on an orderly and timely basis, Viacom and
CBS may request deferred enforcement of FCC rules, or to apply to place certain
assets in trust or seek other regulatory relief. There can be no assurance that
such requests for deferred enforcement or trust applications would be granted
or other relief obtained or that consummation of the merger will not be delayed
pending receipt of FCC approval of the merger. Further, there can be no
assurance that no action will be brought challenging such approvals or actions,
or, if such challenge is made, as to the result thereof. See "Federal
Regulation of Television and Radio Broadcasting."

Antitrust Regulatory Agencies May Oppose or Impose Conditions on the Merger
which May Delay Completion of the Merger and/or Lessen the Anticipated Benefits
of the Merger



   Viacom and CBS have filed Premerger Notification and Report Forms with the
Antitrust Division of the Department of Justice and the Federal Trade
Commission and are providing additional information in response to a request
made by the Department of Justice, which has been assigned to review the
merger. A 20-business day waiting period must expire or terminate following the
provision of additional information before the merger

                                       17
<PAGE>


may be completed. We do not know whether the federal antitrust authorities will
permit the HSR Act waiting period to expire without challenging the merger. We
also do not know whether a third party will challenge the merger on antitrust
grounds or what the result of a third party challenge might be.

   In addition, it is possible that one or more individual states could
investigate and challenge the merger under either federal law or their own
state law, although states have no notification and waiting period
requirements. Depending on the nature of any of these challenges, and any
conditions imposed as a result, these challenges and conditions could delay
completion of the merger or lessen the anticipated benefits of the merger.

   The merger agreement requires the parties to use their respective best
efforts, and to take all actions necessary, to satisfy the conditions to the
merger, and to do so in a manner designed to obtain all regulatory clearances
and the satisfaction of the conditions as expeditiously as possible. This
includes agreeing to the sale or other disposition of assets or businesses and
taking all steps necessary to vacate or lift any order, judgment or injunction
that would prohibit or materially delay consummation of the merger.


Mr. Redstone, Chairman and Chief Executive Officer of Viacom, Will Be the
Controlling Shareholder and May Therefore Determine the Outcome of Most
Shareholder Votes

   Immediately after completion of the merger, National Amusements, which is
controlled by Mr. Redstone, will own approximately 68% of the voting stock of
the combined company. The former CBS holders of common stock will hold only
non-voting Viacom Class B common stock and the former holders of CBS Series B
preferred stock will hold only Viacom Series C preferred stock. Mr. Redstone,
through his control of National Amusements, and not the former CBS
shareholders, will be able to determine the outcome of all corporate actions
requiring shareholder approval except actions that under Delaware law require a
class vote of the Viacom Class B common stock or Viacom Series C preferred
stock. However, in connection with the merger, National Amusements has entered
into a stockholder agreement pursuant to which it has agreed for a three-year
period to ensure, among other things, that eight of the 18 members of the Board
of Directors of the combined company will be directors of CBS or replacements
they may designate. In addition, the proposed new Restated Certificate of
Incorporation of Viacom, which will become effective at the time of the merger,
will provide that Board action will require the approval of 14 of the 18
directors of the combined company, except for a number of areas where the
directors of the combined company may act by a majority vote of the Board. Such
arrangements will be in place for a three-year period unless 14 of 18 directors
determine to modify these arrangements or Mr. Karmazin is not the COO or the
CEO of the combined company. For a more detailed discussion of the corporate
governance of the combined company, see "The Merger--Directors, Management and
Corporate Governance of the Combined Company."

The Combined Company's Corporate Governance Structure Will Be Unusual and May
Not be a Successful Model for Managing the Combined Company

   This structure is unusual because, compared to other large U.S.
corporations, the Chief Operating Officer has more autonomy and such autonomy
cannot be easily limited, even if a majority of the Board disagrees with the
COO. In the merger agreement, CBS and Viacom have agreed to a variety of
unusual corporate governance arrangements that will differ significantly from
the manner in which the two companies are currently managed. There can be no
assurance that these arrangements will prove to be a successful model for
managing the combined company. For a detailed description of the corporate
governance arrangements, see "The Merger--Directors, Management and Corporate
Governance of the Combined Company."

The Split-off of Blockbuster from Viacom May Not Occur, Which May Hinder the
Operations of Viacom's Different Businesses

   Viacom has announced that, subject to Viacom Board approval, which will be
based on an assessment of market conditions, and the receipt of a supplemental
tax ruling from the Internal Revenue Service reflecting the proposed merger
between Viacom and CBS, it intends to split-off Blockbuster by offering to
exchange all of its

                                       18
<PAGE>

shares of Blockbuster for shares of Viacom's common stock. The split-off is
intended to establish Blockbuster as a stand-alone entity with objectives
separate from those of Viacom's other businesses. Viacom believes that the
split-off will resolve management, systemic, competitive and other problems
that have arisen from the operation of various different businesses under a
common parent corporation. For example, the split-off will resolve perceived
conflicts of interest between Blockbuster and Paramount. These conflicts are
perceived both by the movie studio competitors of Paramount and the video
retail competitors of Blockbuster. In addition, Viacom believes the split-off
will allow Blockbuster to facilitate the expansion of Blockbuster's business by
issuing its stock to make acquisitions. The split-off will also allow
Blockbuster to modify its compensation structure to provide incentives to its
employees that are more closely linked to its performance. Viacom has no
obligation to effect the split-off either before or after the merger. Viacom
and CBS cannot give any assurance as to whether or not or when the split-off
will occur or as to the terms of the split-off if it does occur, or whether or
not the split-off, if it does occur, will be tax-free.

Viacom May Incur a Significant Loss Resulting from the Split-off of Blockbuster

   If the split-off of Blockbuster occurs, any difference between the fair
market value and net book value of Blockbuster at the time of the split-off
will be recognized as a gain or loss for accounting purposes. Based on the
November 1, 1999 closing price of Blockbuster common stock, a split-off would
have resulted in a pre-tax pro forma loss from discontinued operations of
approximately $3.3 billion.

Potentially Significant Increases in Depreciation and Amortization Expense May
Result from Amortization Periods Which Are Shorter than Preliminary Estimates
Reflected in the Pro Forma Financial Statements Which Would Cause Net Earnings
to Decrease

   Pro forma results of operations reflect adjustments, which are based upon
preliminary estimates, to reflect the allocation of purchase consideration to
the acquired assets and liabilities of CBS. The final allocation of the
purchase consideration will be determined after the completion of the
Viacom/CBS merger and will be based on appraisals and a comprehensive final
evaluation of the fair value of CBS' tangible assets acquired, liabilities
assumed, identifiable intangible assets and goodwill at the time of the merger.
Accordingly, the final determination of tangible and intangible assets may
result in depreciation and amortization expense that is significantly higher
than the preliminary estimates of these amounts, which would cause net earnings
to be lower. See note 3 of Notes to unaudited Viacom/CBS pro forma combined
condensed financial statements.

Risks Relating to the Combined Company

Competitive Developments and Technologies May Adversely Affect the Combined
Company's Future Market Share of Entertainment Audiences and Customers, Which
in Turn May Affect the Combined Company's Advertising Revenues and
Profitability

   Film and Television Production. The television and motion picture industry
has experienced cycles in which increased costs of talent and other factors
have resulted in higher production costs and increased competition. In
addition, television and movie producers are indirectly affected by changes in
viewership of broadcast and cable networks, the amount of broadcast time
available on local stations for syndicated television programs and, for movies,
the relative success of different forms of distribution, such as home video,
pay television and network television, each of which have different
profitability to producers. There can be no assurance that developments in
these areas will not adversely affect the profitability of the combined
company.

   Television and Cable Television Networks. The combined company will directly
compete for viewers in general, as well as for viewers in specific demographic
categories, and for programming with other cable and broadcast television
networks. The recently expanded availability of digital cable television and
the introduction of direct-to-home satellite distribution has greatly increased
the amount of channel capacity available for new networks, resulting in the
launch of a number of new cable television networks by both our companies and

                                       19
<PAGE>

their competitors. In addition, digital broadcast television, which has
recently become available in major markets, may allow a single television
station to broadcast several channels simultaneously. Increasing audience
fragmentation could have an adverse effect on advertising revenue and
subscription revenues. Broadcast television has experienced a decline in total
audience viewership in recent years. Among the major networks, CBS delivers an
audience that has an older demographic. An older demographic may result in
lower revenue for an advertising spot. There can be no assurance that this
audience decline will not continue or that CBS network programming will appeal
to an audience having a younger demographic.

   Television and Radio Broadcast Stations. New technologies, such as digital
radio services, direct-to-home satellite, wireless and wired cable television
and Internet radio and video programming, compete for programming, audiences
and advertising revenues. Each of these technologies are different from
traditional broadcasting and there can be no assurance that these or other new
technologies will not have an adverse effect on the combined company's business
in the future.

   Video. Videocassette rental competes with other forms of distribution of
movies, including theatrical distribution, cable, satellite and broadcast
television. In particular, direct broadcast satellite and digital cable
providers who are able to offer an expanded number of channels and expanded
programming could have a material adverse effect on the business if these
services become more widely available and accepted by consumers. In addition,
some digital cable providers have begun testing technology designed to transmit
movies on demand with interactive capabilities such as start, stop and rewind.
This "video-on-demand" technology could have a material adverse effect on the
videocassette rental market if it could be provided profitably at a reasonable
price and if video-on-demand rights were to be provided with a favorable window
by the movie studios. Movie studios make available videocassettes for rental
during a distribution "window" of time which is in advance of, and exclusive
against, distribution through most other forms of non-theatrical movie
distribution. Although the studios have a significant interest in maintaining a
viable home video rental industry, changes in the videocassette exclusive
window in relation to other windows could have an adverse effect upon the video
rental business. In addition, if the revenue-sharing agreements pursuant to
which video rental revenues are shared with the studios are materially
adversely changed or discontinued, it will have a material adverse effect upon
the video rental business.

   Internet. While the amount of advertising on the Internet is currently
small, the Internet is a rapidly growing competitor for advertising spending
and viewership, the full impact of which cannot be predicted.

Expenditures by Advertisers Tend to Be Seasonal and Cyclical Which Could Cause
Revenues of the Combined Company from Advertisements to Decline Significantly
in any Given Period Generally or in Specific Markets

   The combined company will derive a substantial portion of its revenues from
the sale of advertising on its television stations, cable networks, radio
stations and outdoor displays. Expenditures by advertisers tend to be seasonal
and cyclical, reflecting overall economic conditions as well as budgeting and
buying patterns. A decline in the economic prospects of advertisers or the
economy in general could alter current or prospective advertisers' spending
priorities or increase the time it takes to close a sale with our advertisers.
This could cause revenues of the combined company from advertisements to
decline significantly in any given period. In addition, because a substantial
portion of the combined company's revenues will be derived from local
advertisers, the combined company's ability to generate advertising revenues in
specific markets could be adversely affected by local or regional economic
downturns.

Acceptance of the Combined Company's Programming by the Public is Difficult to
Predict, Which Could Lead to Fluctuations in Revenues

   Revenues derived from the production and distribution of a feature film,
television series or radio show depend primarily upon its acceptance by the
public, which is difficult to predict. The commercial success of a feature
film, television series or radio show also depends upon the quality and
acceptance of other competing

                                       20
<PAGE>

films, television series or radio shows released into the marketplace at or
near the same time, the availability of alternative forms of entertainment and
leisure time activities, general economic conditions and other tangible and
intangible factors, all of which can change and cannot be predicted with
certainty. Further, the theatrical success of a feature film and the audience
ratings for a television series are generally key factors in generating
revenues from other distribution channels, such as home video, free television
and premium pay television.

The Combined Company's Revenues are Dependent upon the Maintenance of
Affiliation Agreements

   Much of the combined company's broadcast network programming will be
provided to its broadcast affiliates pursuant to affiliation agreements of
varying durations and staggered expirations. The combined company will be
dependent upon the maintenance of affiliation agreements with third-party owned
television stations, and there can be no assurance that such affiliation
agreements will be renewed in the future on terms acceptable to the combined
company. The loss of a significant number of such affiliation arrangements
could reduce the distribution of the combined company's programming, thereby
adversely affecting the combined company's ability to sell national advertising
time.

   Similarly, the basic cable networks in which the combined company will hold
interests, including MTV, VH1, Nickelodeon, The Nashville Network, Country
Music Television and other cable networks maintain affiliation arrangements
that enable them to reach a large percentage of cable and direct broadcast
satellite households across the United States. Such cable networks also depend
on achieving and maintaining carriage within the most widely distributed cable
programming tiers to maximize their subscriber base and revenues. The loss of a
significant number of affiliation arrangements on basic programming tiers could
reduce the distribution of such cable networks, thereby adversely affecting
such networks' revenues from subscriber fees and the ability to sell
advertising time. The combined company's non-advertiser supported pay
television networks, such as Showtime, are similarly dependent for their
distribution on the maintenance of affiliation agreements with cable and direct
broadcast satellite distributors on acceptable terms. The loss of carriage on
cable systems or direct broadcast satellite platforms, or continued carriage on
less favorable terms, could adversely affect such networks' subscriber fee
revenues.

Changes in Federal Communications Laws and Regulations May Have an Adverse
Effect on the Combined Company's Business

   The television and radio broadcasting industries are subject to regulation
by the FCC under the Communications Act of 1934. The FCC generally regulates,
among other things, the ownership of media, including ownership by non-U.S.
citizens, broadcast programming and technical operations. Further, the U.S.
Congress and the FCC currently have under consideration, and may in the future
adopt, new laws, regulations and policies regarding a wide variety of matters,
including technological changes, which could, directly or indirectly, affect
the operations and ownership of the combined company's broadcast properties.


The Combined Company Has Environmental, Asbestos and Other Contingent
Liabilities That Could Have a Significant Impact on the Combined Company

   Primarily as a result of Viacom's mergers with Paramount Communications,
formerly Gulf & Western and Blockbuster, which owned a controlling interest in
Spelling Entertainment Group Inc., formerly the Charter Company, in 1994 and
the merger of CBS Inc. with Westinghouse Electric Corporation in 1995, the
combined company will have significant environmental liabilities. Both
Paramount and Westinghouse were diversified, global companies with portfolios
including a wide variety of industrial businesses. The Charter Company was in
various businesses related to petroleum products. As a result, Viacom and CBS
have contingent liabilities, including environmental liabilities, and have
indemnified others against those liabilities, in each case related to
discontinued operations and in other instances has received indemnities, from
third parties.

   Under federal and state Superfund and other environmental laws, Viacom and
CBS each have been named as a potentially responsible party at numerous sites
located throughout the country. At many of these sites,

                                       21
<PAGE>


Viacom and CBS are either not responsible parties or their site involvement is
very limited or de minimis. However, Viacom or CBS, as the case may be, may
have varying degrees of cleanup responsibilities at a number of sites. Viacom
and CBS believe that any liability incurred for cleanup at these sites will be
satisfied over a number of years, and in many cases, the costs will be shared
with other potentially responsible parties. These sites include locations for
which Viacom or CBS, as the case may be, as part of an agreement for sale, may
have retained obligations for remediation of possible environmental
contamination or may have continuing obligations under applicable environmental
laws.

   In addition, CBS and Viacom are parties to various lawsuits and have
received claims relating to their continuing and discontinued operations. Some
of these lawsuits and claims, including those related to asbestos liabilities,
seek substantial monetary damages.

   The combined company will have access to insurance in substantial amounts
and management believes it has sufficient reserves. Accordingly, while there
can be no assurance in this regard, the pending or potential litigation,
environmental and other liabilities should not have a material adverse effect
on the financial condition of the combined company.

                                       22
<PAGE>

           CAUTIONARY STATEMENT CONCERNING FORWARD-LOOKING STATEMENTS

   This document and the documents incorporated by reference into this joint
proxy statement/prospectus contain both historical and forward-looking
statements. All statements other than statements of historical fact are, or may
be deemed to be, forward-looking statements within the meaning of section 27A
of the Securities Act of 1933 and section 21E of the Securities Exchange Act of
1934. These forward-looking statements are not based on historical facts, but
rather reflect Viacom's and CBS' current expectations concerning future results
and events. These forward-looking statements generally can be identified by use
of statements that include phrases such as "believe," "expect," "anticipate,"
"intend," "plan," "foresee," "likely," "will" or other similar words or
phrases. Similarly, statements that describe our objectives, plans or goals are
or may be forward-looking statements. These forward-looking statements involve
known and unknown risks, uncertainties and other factors which may cause the
actual results, performance or achievements of Viacom or CBS to be different
from any future results, performance and achievements expressed or implied by
these statements. You should review carefully all information, including the
financial statements and the notes to the financial statements, included or
incorporated by reference into this joint proxy statement/prospectus.

   In addition to the risk factors described in the previous section, the
following important factors could affect future results, causing these results
to differ materially from those expressed in our forward-looking statements:

  . the timing, impact and other uncertainties related to pending
    acquisitions by CBS or Viacom and future acquisitions and dispositions by
    the combined company;

  . the ability of the combined company to renew existing programming,
    licensing and distribution agreements and to enter into new agreements;

  . the success of CBS and Viacom and their suppliers and customers in
    achieving year 2000 compliance;

  . changes in tax requirements, including tax rate changes, new tax laws and
    revised tax law interpretations; and

  . interest rate fluctuations and other capital market conditions.

   These factors and the risk factors described in the previous section are not
necessarily all of the important factors that could cause actual results to
differ materially from those expressed in any of our forward-looking
statements. Other unknown or unpredictable factors also could have material
adverse effects on our future results. The forward-looking statements included
in this joint proxy statement/prospectus are made only as of the date of this
joint proxy statement/prospectus and under section 27A of the Securities Act
and section 21E of the Exchange Act we do not have any obligation to publicly
update any forward-looking statements to reflect subsequent events or
circumstances. We cannot assure you that projected results or events will be
achieved.

                                       23
<PAGE>


          UNAUDITED PRO FORMA COMBINED CONDENSED FINANCIAL INFORMATION

    Unaudited Viacom/CBS Pro Forma Combined Condensed Financial Information

General

   The merger will be accounted for by the purchase method of accounting.
Consideration provided by Viacom in this merger includes: approximately $36.7
billion through the issuance of approximately 812 million shares of Viacom non-
voting Class B common stock plus, approximately $833 million of cash
consideration, net of approximately $556 million of deferred taxes, for the
assumed settlement of a portion of the historical CBS stock options and the
assumption of approximately $200 million of CBS stock options by Viacom, both
of which were granted prior to the date of the merger agreement, and
approximately $3.5 billion for the assumption of debt. This consideration will
be allocated to the tangible and identifiable intangible assets acquired and
liabilities assumed according to their respective fair values, with the excess
purchase consideration being allocated to goodwill. The merger is contingent
upon, among other things, regulatory and Viacom and CBS shareholder approval.

   The following unaudited pro forma combined condensed balance sheet as of
June 30, 1999, is presented as if the merger and the other Viacom and other CBS
transactions described in the notes to the unaudited Viacom/CBS pro forma
combined condensed financial statements had occurred on June 30, 1999. The
unaudited pro forma combined condensed statements of operations for the six
months ended June 30, 1999, and for the year ended December 31, 1998, are
presented as if the merger and the other Viacom and other CBS transactions had
occurred on January 1, 1998. In the opinion of Viacom and CBS management, all
adjustments and/or disclosures necessary for a fair presentation of the pro
forma data have been made. These unaudited pro forma combined condensed
financial statements are presented for illustrative purposes only and are not
necessarily indicative of the operating results or the financial position that
would have been achieved had the merger, or the other Viacom and other CBS
transactions had been consummated as of the dates indicated or of the results
that may be obtained in the future.

   These unaudited pro forma combined condensed financial statements and notes
thereto should be read in conjunction with the unaudited CBS/King World pro
forma combined condensed financial information included herein, and:

  . CBS' consolidated financial statements and the notes thereto as of and
    for the year ended December 31, 1998, and Management's Discussion and
    Analysis included in CBS' Annual Report on Form 10-K for the year ended
    December 31, 1998, which is incorporated by reference in this joint proxy
    statement/prospectus;

  . King World's consolidated financial statements and the notes thereto as
    of and for the year ended August 31, 1998, which are included in CBS'
    Current Report on Form 8-K filed on or about October 8, 1999 which is
    incorporated by reference in this joint proxy statement/prospectus;

  . CBS' Quarterly Reports on Form 10-Q for the quarterly periods ended March
    31, 1999 and June 30, 1999 which are incorporated by reference in this
    joint proxy statement/prospectus;

  . King World's condensed consolidated financial statements and notes
    thereto as of and for the quarterly period ended May 31, 1999 which are
    included in CBS' Current Report on Form 8-K filed on or about October 8,
    1999 which is incorporated by reference in this joint proxy
    statement/prospectus;

  . Viacom's consolidated financial statements and the notes thereto as of
    and for the year ended December 31, 1998, and Management's Discussion and
    Analysis included in Viacom's Annual Report on Form 10-K for the year
    ended December 31, 1998 which is incorporated by reference in this joint
    proxy statement/prospectus; and

  . Viacom's consolidated financial statements and the notes thereto as of
    and for the six-month period ended June 30, 1999, on Form 10-Q which is
    incorporated by reference in this joint proxy statement/prospectus.


                                       24
<PAGE>



                      UNAUDITED VIACOM/CBS PRO FORMA
                        COMBINED CONDENSED BALANCE SHEET
                              As of June 30, 1999

                                 (in millions)

<TABLE>
<CAPTION>
                                                Pro Forma                                     Pro Forma
                                               Adjustments                                    Combined
                                        CBS        for          Pro Forma   Adjustments      As Adjusted
                            Viacom   Pro Forma Viacom/CBS        Combined    For Other        For Other
                          Historical Combined    Merger         Viacom/CBS Viacom Events    Viacom Events
                          ---------- --------- -----------      ---------- -------------    -------------
<S>                       <C>        <C>       <C>              <C>        <C>              <C>
ASSETS:
Cash and cash
 equivalents............   $   616    $   582   $   (532)(/3/)   $   666      $  --            $   666
Customer receivables,
 net....................     1,577      1,388        --            2,965         --              2,965
Other current assets....     2,622      1,212        484 (/3/)     4,318         --              4,318
                           -------    -------   --------         -------      ------           -------
Total current assets....     4,815      3,182        (48)          7,949         --              7,949
Property and equipment,
 net....................     3,249      3,047        --            6,296         --              6,296
Goodwill and other
 intangibles, net.......    11,490     23,689     22,594 (/3/)    57,773         --             57,773
Other noncurrent
 assets.................     4,249      1,592       (387)(/3/)     5,546          (5)(/4/)       5,541
                                                      92 (/3/)
                           -------    -------   --------         -------      ------           -------
Total assets............   $23,803    $31,510   $ 22,251         $77,564      $   (5)          $77,559
                           =======    =======   ========         =======      ======           =======
LIABILITIES AND
SHAREHOLDERS' EQUITY:
Current portion of long-
 term debt..............   $   328    $   265   $    --          $   593      $  --            $   593
Accounts payable,
 accrued expenses and
 other..................     3,960      1,880        (72)(/3/)     5,743         --              5,743
                                                     (25)(/3/)
                           -------    -------   --------         -------      ------           -------
Total current
 liabilities............     4,288      2,145        (97)          6,336         --              6,336
Long-term debt..........     6,424      3,283        470 (/3/)    10,242        (437)(/4/)       9,805
                                                      65 (/3/)
Net liabilities of
 discontinued
 operations.............       --         985        --              985         --                985
Other noncurrent
 liabilities............     1,876      4,336          8 (/3/)     6,220         --              6,220
                           -------    -------   --------         -------      ------           -------
Total liabilities.......    12,588     10,749        446          23,783        (437)           23,346
                           -------    -------   --------         -------      ------           -------
Minority interest in
 equity of consolidated
 subsidiaries...........       --       5,589        --            5,589       1,094 (/4/)       6,683
Shareholders' equity:
Common stock............         7        800          8 (/2/)        15         --                 15
                                                    (800)(/3/)
Additional paid-in
 capital................    10,593     14,596     36,725 (/2/)    47,741        (662)(/4/)      47,079
                                                     200 (/2/)
                                                 (14,596)(/3/)
                                                     223 (/3/)
Common stock held in
 treasury, at cost......    (1,361)    (1,467)     1,467 (/3/)    (1,361)        --             (1,361)
Retained earnings.......     2,018      1,910     (1,910)(/3/)     1,839         --              1,839
                                                    (179)(/3/)
Accumulated other
 comprehensive loss.....       (42)      (667)       667 (/3/)       (42)        --                (42)
                           -------    -------   --------         -------      ------           -------
Total shareholders'
 equity.................    11,215     15,172     21,805          48,192        (662)           47,530
                           -------    -------   --------         -------      ------           -------
Total liabilities and
 shareholders' equity...   $23,803    $31,510   $ 22,251         $77,564      $   (5)          $77,559
                           =======    =======   ========         =======      ======           =======
</TABLE>

                 See accompanying notes to unaudited Viacom/CBS
               pro forma combined condensed financial statements.

                                       25
<PAGE>


                      UNAUDITED VIACOM/CBS PRO FORMA
                  COMBINED CONDENSED STATEMENTS OF OPERATIONS
                     For the Six Months Ended June 30, 1999

                    (in millions, except per share amounts)

<TABLE>
<CAPTION>
                                                Pro Forma                                   Pro Forma
                                               Adjustments                                  Combined
                                        CBS        for         Pro Forma   Adjustments     as Adjusted
                            Viacom   Pro Forma Viacom/CBS       Combined    For Other       For Other
                          Historical Combined    Merger        Viacom/CBS Viacom Events   Viacom Events
                          ---------- --------- -----------     ---------- -------------   -------------
<S>                       <C>        <C>       <C>             <C>        <C>             <C>
Revenues................   $ 5,954    $ 4,190    $  --          $10,144       $--            $10,144
Operating expenses......    (3,887)    (2,442)      --           (6,329)       --             (6,329)
Selling, general and
 administrative.........    (1,110)      (660)      --           (1,770)       --             (1,770)
Depreciation and
 amortization...........      (397)      (561)     (282)(/3/)    (1,240)       --             (1,240)
Residual costs of
 discontinued
 businesses.............       --         (85)      --              (85)       --                (85)
                           -------    -------    ------         -------       ----           -------
Operating income
 (loss).................       560        442      (282)            720        --                720
Other income and
 expense, net...........       (29)        (4)      --              (33)       --                (33)
Interest expense, net...      (200)      (143)      (40)(/3/)      (383)         1 (/4/)        (382)
                           -------    -------    ------         -------       ----           -------
Earnings from continuing
 operations before
 income taxes...........       331        295      (322)            304          1               305
Income tax (expense)
 benefit................      (202)      (239)       16 (/5/)      (425)       --               (425)
Minority interest.......        (1)       (32)      --              (33)         4 (/4/)         (29)
                           -------    -------    ------         -------       ----           -------
Earnings (loss) from
 continuing operations..       128         24      (306)           (154)         5              (149)
Cumulative convertible
 preferred stock
 dividend requirement
 and premium on
 repurchase of preferred
 stock..................       (13)       --        --              (13)       --                (13)
                           -------    -------    ------         -------       ----           -------
Net earnings (loss) from
 continuing operations
 attributable to common
 stock..................   $   115    $    24    $ (306)        $  (167)      $  5           $  (162)
                           =======    =======    ======         =======       ====           =======
Earnings (loss) from
 continuing operations
 per common share:
 Basic..................      $.17                                $(.11)                       $(.11)
 Diluted................      $.16                                $(.11)                       $(.11)
Weighted average shares
 outstanding:
 Basic..................       693                  812           1,505                        1,505
 Diluted................       708                  812           1,505                        1,505
</TABLE>

                 See accompanying notes to unaudited Viacom/CBS
               pro forma combined condensed financial statements.

                                       26
<PAGE>


                      UNAUDITED VIACOM/CBS PRO FORMA
                  COMBINED CONDENSED STATEMENTS OF OPERATIONS
                      For the Year Ended December 31, 1998

                    (in millions, except per share amounts)

<TABLE>
<CAPTION>
                                                Pro Forma                                  Pro Forma
                                               Adjustments                                 Combined
                                        CBS        for        Pro Forma   Adjustments     as Adjusted
                            Viacom   Pro Forma Viacom/CBS      Combined    For Other       For Other
                          Historical Combined    Merger       Viacom/CBS Viacom Events   Viacom Events
                          ---------- --------- -----------    ---------- -------------   -------------
<S>                       <C>        <C>       <C>            <C>        <C>             <C>
Revenues................   $12,096    $ 8,361     $ --         $ 20,457      $--           $ 20,457
Operating expenses......    (8,506)    (5,242)      --          (13,748)      --            (13,748)
Selling, general and
 administrative.........    (2,061)    (1,335)      --           (3,396)      --             (3,396)
Depreciation and
 amortization...........      (777)    (1,113)     (565)(/3/)    (2,455)      --             (2,455)
Residual costs of
 discontinued
 businesses.............       --        (163)      --             (163)      --               (163)
                           -------    -------     -----        --------      ----          --------
Operating income
 (loss).................       752        508      (565)            695       --                695
Other income and
 expense, net...........       (57)        38       --              (19)      --                (19)
Interest expense, net...      (599)      (363)      (89)(/3/)    (1,051)        6 (/4/)      (1,045)
                           -------    -------     -----        --------      ----          --------
Earnings (loss) from
 continuing operations
 before income taxes....        96        183      (654)           (375)        6              (369)
Income tax (expense)
 benefit................      (139)      (320)       36 (/5/)      (423)       (2)(/5/)        (425)
Minority interest.......        (1)       (35)      --              (36)       54 (/4/)          18
                           -------    -------     -----        --------      ----          --------
Earnings (loss) from
 continuing operations..       (44)      (172)     (618)           (834)       58              (776)
Cumulative convertible
 preferred stock
 dividend requirement
 and discount on
 repurchase of preferred
 stock..................       (27)       --        --              (27)      --                (27)
                           -------    -------     -----        --------      ----          --------
Net earnings (loss) from
 continuing operations
 attributable to common
 stock..................   $   (71)   $  (172)    $(618)       $   (861)     $ 58          $   (803)
                           =======    =======     =====        ========      ====          ========
Loss from continuing
 operations per common
 share:
 Basic..................     $(.10)                               $(.57)                      $(.53)
 Diluted................     $(.10)                               $(.57)                      $(.53)
Weighted average shares
 outstanding:
 Basic..................       709                  812           1,521                       1,521
 Diluted................       709                  812           1,521                       1,521
</TABLE>

                 See accompanying notes to unaudited Viacom/CBS
               pro forma combined condensed financial statements.

                                       27
<PAGE>


             NOTES TO UNAUDITED VIACOM/CBS PRO FORMA COMBINED
                         CONDENSED FINANCIAL STATEMENTS

                 (tables in millions, except per share amounts)

(1) Basis of Presentation

   The purchase method of accounting has been used in the preparation of the
accompanying unaudited pro forma combined condensed financial statements. Under
this method of accounting, the purchase consideration is allocated to tangible
and identifiable intangible assets acquired and liabilities assumed based on
their respective fair values, with the excess purchase consideration being
allocated to goodwill. For purposes of the unaudited pro forma combined
condensed financial statements, the preliminary fair values of CBS' assets and
liabilities were estimated by CBS and Viacom management. The final allocation
of the purchase price will be determined after the completion of the merger and
will be based on appraisals and a comprehensive final evaluation of tangible
and identifiable intangible assets acquired (including their estimated useful
lives) and liabilities assumed.

(2) Consideration

   Pursuant to the merger agreement, holders of CBS common stock will receive
1.085 shares of Viacom non-voting Class B common stock for each CBS share of
common stock issued and outstanding at the completion of the merger. The total
number of CBS shares issued and outstanding during the period subsequent to the
merger announcement but prior to its completion is not anticipated to fluctuate
from the ordinary course. For purposes of the unaudited pro forma combined
condensed financial statements, the $45.225 per share value of Viacom non-
voting Class B common stock to be issued was calculated based on its average
market price per share from September 2, 1999 through September 9, 1999.

<TABLE>
<S>                                                                      <C>
Total estimated CBS common shares outstanding (including approximately
 57.3 shares to be issued to King World shareholders)..................    748.6
Exchange Ratio.........................................................    1.085
                                                                         -------
Estimated Viacom Class B common shares to be issued....................    812.2
                                                                         =======
Purchase Consideration:
Estimated value of Viacom Class B common stock to be issued (812.2
 shares at $45.225 per share):
  Common stock, $.01 par value.........................................  $     8
  Additional paid-in capital...........................................   36,725
Estimated fair value of CBS stock options to be assumed by Viacom (note
 3)....................................................................      200
                                                                         -------
Estimated net increase in Viacom equity................................  $36,933
                                                                         =======
</TABLE>

                                       28
<PAGE>


             NOTES TO UNAUDITED VIACOM/CBS PRO FORMA COMBINED

                CONDENSED FINANCIAL STATEMENTS (continued)

                 (tables in millions, except per share amounts)


(3) Merger

   To record the excess purchase price over the net tangible and identifiable
intangible assets acquired in connection with the merger as described in notes
1 and 2 above:

<TABLE>
<S>                                                                  <C>
Estimated net increase in Viacom equity............................. $ 36,933
Less: Shareholders' equity of CBS Pro Forma Combined at June 30,
 1999
  Common stock......................................................     (800)
  Additional paid-in capital........................................  (14,596)
  Common stock held in treasury.....................................    1,467
  Retained earnings/Accumulated other comprehensive loss............   (1,243)
Adjustments:
  Add: Liability for conversion of CBS stock options, net of
   deferred taxes...................................................      833
                                                                     --------
Excess purchase price over net tangible and identifiable intangible
 assets acquired....................................................   22,594
Identifiable intangible assets acquired.............................   23,689
                                                                     --------
Excess purchase price over net tangible assets acquired............. $ 46,283
                                                                     ========
Incremental amortization expense of excess purchase price over net
 tangible and identifiable intangible assets acquired:
  Twelve month amortization......................................... $    565
                                                                     ========
  Six month amortization............................................ $    282
                                                                     ========
</TABLE>

   The above pro forma adjustments are based on preliminary estimates. The
final allocation of the purchase price will be determined after the completion
of the merger and will be based on appraisals and a comprehensive final
evaluation of the fair value of CBS' tangible and identifiable intangible
assets acquired and liabilities assumed at the time of the merger. For the
purpose of these unaudited pro forma combined condensed financial statements,
amortization of the excess purchase price over tangible net assets acquired of
approximately $46.3 billion is computed on a straight-line basis using useful
lives as follows: $37.2 billion (40 years), $6.6 billion (30 years) and $2.5
billion (10 years).

   Generally accepted accounting principles currently require that acquired
intangible assets be amortized over periods not to exceed 40 years. Viacom
believes that the intangible assets acquired from CBS included in the 40-year
category are comprised principally of the franchises, FCC licenses, and
trademarks of CBS-assets with indefinite lives, which have historically
appreciated in value over time. In addition, Viacom intends to continue to
expand the combined company's existing lines of business, develop new
businesses by leveraging the well known franchises, trademarks and products of
Viacom and CBS, and take advantage of synergies that exist between Viacom and
CBS to further strengthen existing lines of business. Viacom believes that it
will benefit from the merger for an indeterminable period of time of at least
40 years and, therefore, a 40-year amortization period for the $37.2 billion
portion of the excess purchase consideration is appropriate. After the
completion of the merger, Viacom will complete valuations and other studies of
the significant assets, liabilities and business operations of CBS as of the
time of the merger. Using this information, Viacom will make a final allocation
of the purchase consideration, including allocation to tangible assets and
liabilities, identifiable intangible assets and goodwill. Accordingly,
depreciation and amortization, as presented in the pro forma combined condensed
statements of operations for the year and six months ended December 31, 1998
and June 30, 1999, may fluctuate significantly from the preliminary estimate
when the final appraisals of tangible and intangible assets are completed.

                                       29
<PAGE>


             NOTES TO UNAUDITED VIACOM/CBS PRO FORMA COMBINED

                CONDENSED FINANCIAL STATEMENTS (continued)

                 (tables in millions, except per share amounts)

   The following table presents the incremental reduction to pro forma net
income (loss) from continuing operations attributable to common stock and pro
forma net income (loss) from continuing operations per common share resulting
from the allocation of each $1 billion of purchase consideration to assets with
useful lives of thirty, twenty, or ten years rather than the forty year life
reflected in the pro forma financial statements.

<TABLE>
<CAPTION>
                                                    30 years 20 years 10 years
                                                    -------- -------- --------
<S>                                                 <C>      <C>      <C>
Impact on pro forma net income (loss) from
 continuing operations attributable to common
 stock:
  For the twelve month period......................  $   (8)  $  (25)  $  (75)
                                                     ======   ======   ======
  For the sixth month period.......................  $   (4)  $  (13)  $  (38)
                                                     ======   ======   ======
Impact on pro forma net income (loss) from
 continuing operations per common share:
  For the year ended December 31, 1998.............  $(0.01)  $(0.02)  $(0.05)
                                                     ======   ======   ======
  For the six months ended June 30, 1999...........  $  --    $(0.01)  $(0.02)
                                                     ======   ======   ======
</TABLE>

   Limited rights to receive cash in lieu of Viacom options exist for the
majority of the historical CBS stock options outstanding prior to the
announcement of the merger. To reflect the liability associated with these
stock options, these unaudited pro forma combined condensed financial
statements assume that the options will be settled in cash for approximately
$1.4 billion. Accordingly, the issuance of long-term debt of $470 million and
adjustments to reflect the use of cash and investments, classified as other
noncurrent assets, of $532 million and $387 million, respectively, have been
recorded in the pro forma balance sheet to reflect the financing and funding of
such obligations at the effective time of the merger. In addition, related
interest expense of $38 million and $85 million for the six months of 1999 and
the twelve months of 1998, respectively, have been recorded in the unaudited
pro forma combined condensed statements of operations. Deferred taxes have been
provided for on the respective book and tax basis differences at a 40 percent
marginal tax rate. Additional options with a fair value of $200 million either
do not contain these limited rights or are options related to underlying shares
which cannot be disposed of for some designated period of time, and, as such,
have been reflected as an adjustment to additional paid-in capital within
shareholders' equity.

   Viacom has entered into agreements with the two Deputy Chairmen of Viacom
regarding the terms of their resignations upon the effective time of the
merger. Accordingly, the pro forma balance sheet includes a charge as a
reduction to retained earnings of $179 million, net of tax benefit of $119
million, which principally reflects the stock options granted to them over the
life of their employment with Viacom as well as cash payments in accordance
with their resignation agreements. The tax benefit assumes a 40 percent
marginal tax rate. The pro forma statement of operations includes a charge for
the incremental interest expense associated with the increase in long-term
debt.

(4) Other Viacom Events

   On August 10, 1999, Blockbuster Inc., a subsidiary of Viacom, completed the
initial public offering of 31 million shares of its Class A common stock at $15
per share. Viacom owns 100% of the outstanding shares of Blockbuster Class B
common stock, which represents approximately 82.3% of Blockbuster's equity
value after the initial public offering. As a result of the issuance of
subsidiary stock, Viacom recorded a pro forma reduction to additional paid-in
capital of approximately $662 million. Of this amount, $5 million represents
transaction costs which were prepaid prior to June 30, 1999. Net proceeds from
this offering of approximately $437 million were used to repay Blockbuster
debt.

                                       30
<PAGE>


             NOTES TO UNAUDITED VIACOM/CBS PRO FORMA COMBINED

                CONDENSED FINANCIAL STATEMENTS (continued)

                 (tables in millions, except per share amounts)


   The net decrease in interest expense of $1 million and $6 million for the
six months ended June 30, 1999 and the twelve months ended December 31, 1998,
respectively, is attributable to the repayment of debt with the Blockbuster
initial public offering net proceeds of $437 million, partially offset by the
increase in interest expense due to the higher interest rate attributable to
the Blockbuster debt and the amortization of deferred debt issue costs incurred
in connection with the Blockbuster debt.

   The adjustment to minority interest reflects Blockbuster's initial public
offering of its shares as discussed above.

(5) Income Tax Expense

   Income tax expense on the pro forma results of operations and the pro forma
adjustments, excluding non-deductible goodwill amortization, is calculated at a
40 percent marginal tax rate.

(6) Items not included in the Unaudited Pro Forma Combined Condensed Financial
Statements

   The preceding unaudited pro forma combined condensed financial statements do
not include any pro forma adjustments for the following:

  . Viacom anticipates recording a pre-tax restructuring charge in connection
    with the acquisition of the remaining minority interest of Spelling
    Entertainment Group Inc. of approximately $70-$90 million in the third
    quarter of 1999.

  . Any operating efficiencies and cost savings that may be achieved with
    respect to the combined companies.

  . Upon closing of the merger, the combined companies may incur integration
    related expenses as a result of the elimination of duplicate facilities
    and functions, operational realignment and related workforce reductions.
    Such CBS costs would generally be recognized as a liability assumed as of
    the merger date resulting in additional goodwill while Viacom related
    costs would be recognized as an expense through the statements of
    operations.

  . Transactions between Viacom and CBS, including transactions between
    Viacom and companies proposed to be acquired by CBS, have not been
    eliminated in the unaudited pro forma combined condensed financial
    statements, as the amounts are not material for the periods presented.

  . Transaction costs related to the merger are not expected to have a
    material impact on these unaudited pro forma combined condensed financial
    statements.

  . In connection with the merger, some radio and television stations may
    have to be divested in order to comply with current FCC regulations.
    Also, Viacom may be required to reduce or divest its interest in the
    United Paramount Network to comply with FCC rules limiting the common
    ownership of some television networks. Generally, any gains or losses
    associated with disposition of historical Viacom assets would be
    recognized through the statements of operations while the gain or loss on
    the disposition of historical CBS assets would likely be recognized as an
    adjustment to goodwill.

  . Viacom has announced that, subject to Viacom Board approval, which will
    be based on an assessment of market conditions, and the receipt of a
    supplemental tax ruling from the Internal Revenue Service reflecting the
    merger, it may split-off Blockbuster by offering to exchange all of its
    shares of Blockbuster for shares of Viacom's common stock. The aggregate
    market value of the shares of Blockbuster common stock based on the
    November 1, 1999 closing price of $12.4375 per share of

                                       31
<PAGE>


             NOTES TO UNAUDITED VIACOM/CBS PRO FORMA COMBINED

                CONDENSED FINANCIAL STATEMENTS (continued)

                 (tables in millions, except per share amounts)

   Blockbuster common stock was approximately $2.2 billion. The pro forma net
   book value of Blockbuster at June 30, 1999, after giving effect to the
   initial public offering, was approximately $5.1 billion. If Viacom
   determines to engage in the split-off, any difference between the fair
   market value and net book value at the time of the split-off will be
   recognized as a gain or loss for accounting purposes. Based on the
   November 1, 1999 closing stock price of Blockbuster, a split-off would
   have resulted in a pre-tax pro forma loss on discontinued operations of
   approximately $3.3 billion. The actual amount of the gain or loss will
   depend upon the fair market value and net book value of Blockbuster at the
   time of the split-off as well as the exchange ratio used in the split-off.
   In addition, in a tax-free split-off, Viacom/CBS pro forma shareholders'
   equity will be reduced by an amount no greater than the net book value of
   Blockbuster at the time of the split-off. Viacom has no obligation to
   effect the split-off either before or after the merger. Viacom and CBS
   cannot give any assurance as to whether or not or when the split-off will
   occur or as to the terms of the split-off if it does occur, or whether or
   not the split-off, if it does occur, will be tax-free.

(7) Reclassifications

   Some reclassifications have been made from the historical Viacom financial
statements to conform to the unaudited pro forma combined condensed financial
statements presentation.

                                       32
<PAGE>

  Unaudited CBS/King World Pro Forma Combined Condensed Financial Information

General

   The following unaudited pro forma combined condensed financial statements
are presented using the purchase method of accounting for the merger of CBS
and King World, the June 4, 1998 acquisition of CBS Radio, Inc., formerly
American Radio Systems Corporation, by CBS and the probable acquisition of
Outdoor Systems, Inc. by Infinity Broadcasting Corporation which was announced
on May 27, 1999. These financial statements also reflect the combination of
consolidated historical financial data of CBS, King World, American Radio, and
Outdoor Systems.

   The unaudited pro forma combined condensed balance sheet as of June 30,
1999 is presented as if the merger of CBS and King World, and the Outdoor
Systems acquisition had occurred on June 30, 1999. The unaudited pro forma
combined condensed statement of operations for the six months ended June 30,
1999 and the year ended December 31, 1998 is presented as if the merger of CBS
and King World, the acquisition of American Radio by CBS, the probable
acquisition of Outdoor Systems by Infinity, and the Infinity initial public
offering had occurred on January 1, 1998. In the opinion of CBS management,
all adjustments and/or disclosures considered necessary for a fair
presentation of the pro forma data have been made.

   These unaudited pro forma combined condensed financial statements should be
read in conjunction with:

  . CBS' consolidated financial statements and the notes thereto as of and
    for the year ended December 31, 1998 and Management's Discussion and
    Analysis included in CBS' Annual Report on Form 10-K for the year ended
    December 31, 1998, which is incorporated by reference in this joint proxy
    statement/prospectus;

  . King World's consolidated financial statements and the notes thereto as
    of and for the year ended August 31, 1998, which are included in CBS'
    Current Report on Form 8-K filed on or about October 8, 1999, which is
    incorporated by reference in this joint proxy statement/prospectus;

  . CBS' Quarterly Reports on Form 10-Q for the quarterly periods ended June
    30, 1999 and March 31, 1999, which are incorporated by reference in this
    joint proxy statement/prospectus; and

  . King World's condensed consolidated financial statements and notes
    thereto as of and for the quarterly period ended May 31, 1999, which are
    included in CBS' Current Report on Form 8-K filed on or about October 8,
    1999, which is incorporated by reference in this joint proxy
    statement/prospectus.

These unaudited pro forma combined condensed financial statements are
presented for illustrative purposes only and are not necessarily indicative of
the operating results or financial position that would have been achieved had
the CBS and King World merger, the acquisition of American Radio by CBS, the
probable acquisition of Outdoor Systems by Infinity, or the Infinity initial
public offering been consummated as of the dates indicated, or of the results
that may be obtained in the future.

                                      33
<PAGE>


                    UNAUDITED CBS/KING WORLD PRO FORMA
                        COMBINED CONDENSED BALANCE SHEET
                              As of June 30, 1999

                                 (in millions)

<TABLE>
<CAPTION>
                                                     Pro Forma      Pro Forma
                                                  Adjustments for   Combined   Adjustments     CBS
                             CBS      King World     CBS/King       CBS/King  For Other CBS Pro Forma
                          Historical May 31, 1999  World Merger       World    Events (8)   Combined
                          ---------- ------------ ---------------   --------- ------------- ---------
<S>                       <C>        <C>          <C>               <C>       <C>           <C>
ASSETS:
Cash and cash
equivalents.............   $   742      $  375        $  --          $ 1,117     $ (535)     $   582
Short-term investments..       --           32           --               32        --            32
Customer receivables,
net.....................     1,127         102            (5)(/4/)     1,224        164        1,388
Program rights..........       516         --            --              516        --           516
Deferred income taxes...       303         --            --              303         13          316
Prepaid and other
current assets..........       163          96           --              259         89          348
                           -------      ------        ------         -------     ------      -------
Total current assets....     2,851         605            (5)          3,451       (269)       3,182
Long-term investments...       --          387           --              387        --           387
Property and equipment,
net.....................     1,132          20           --            1,152      1,895        3,047
FCC licenses, net.......     4,310         --            --            4,310        --         4,310
Goodwill, net...........    10,260         --          1,731 (/3/)    11,991      6,627       18,618
Other intangible and
noncurrent assets.......     1,805          94           --            1,899         67        1,966
                           -------      ------        ------         -------     ------      -------
Total assets............   $20,358      $1,106        $1,726         $23,190     $8,320      $31,510
                           =======      ======        ======         =======     ======      =======
LIABILITIES AND
SHAREHOLDERS' EQUITY:
Current maturities of
long-term debt..........   $    79      $  --         $  --          $    79     $  186      $   265
Liabilities for talent
and program rights......       374         --            --              374        --           374
Accounts payable,
accrued and other
liabilities.............     1,255         143            25 (/3/)     1,418         88        1,506
                                                          (5)(/4/)
                           -------      ------        ------         -------     ------      -------
Total current
 liabilities............     1,708         143            20           1,871        274        2,145
Long-term debt..........     2,111         --            --            2,111      1,172        3,283
Net liabilities of
discontinued
operations..............       985         --            --              985        --           985
Pension liability.......       846         --            --              846        --           846
Postretirement benefit
liability...............     1,020         --            --            1,020        --         1,020
Other noncurrent
liabilities.............     2,368         --            --            2,368        102        2,470
                           -------      ------        ------         -------     ------      -------
Total liabilities.......     9,038         143            20           9,201      1,548       10,749
                           -------      ------        ------         -------     ------      -------
Minority interest in
equity of consolidated
subsidiaries............     1,625         --            --            1,625      3,964        5,589
Shareholders' equity:
Preferred stock.........       --          --            --              --         --           --
Common stock............       743           1            57 (/3/)       800        --           800
                                                          (1)(/3/)
Capital in excess of par
value...................     9,176         151         2,282 (/3/)    11,788      2,808       14,596
                                                         330 (/3/)
                                                        (151)(/3/)
Common stock held in
treasury, at cost.......    (1,467)       (446)          446 (/3/)    (1,467)       --        (1,467)
Retained earnings.......     1,910       1,257        (1,257)(/3/)     1,910        --         1,910
Accumulated other
comprehensive loss......      (667)        --            --             (667)       --          (667)
                           -------      ------        ------         -------     ------      -------
Total shareholders'
 equity.................     9,695         963         1,706          12,364      2,808       15,172
                           -------      ------        ------         -------     ------      -------
Total liabilities and
 shareholders' equity...   $20,358      $1,106        $1,726         $23,190     $8,320      $31,510
                           =======      ======        ======         =======     ======      =======
</TABLE>

          See accompanying notes to unaudited CBS/King World pro forma
                    combined condensed financial statements.

                                       34
<PAGE>


                    UNAUDITED CBS/KING WORLD PRO FORMA
                   COMBINED CONDENSED STATEMENT OF OPERATIONS

                     For the six months ended June 30, 1999

                    (in millions, except per share amounts)

<TABLE>
<CAPTION>
                                                              Pro Forma          Pro Forma  Adjustments
                                            King World     Adjustments for       Combined       For         CBS
                                         Six months ended     CBS/King           CBS/King    Other CBS   Pro Forma
                          CBS Historical May 31, 1999(/7/)  World Merger           World   Events  (/8/) Combined
                          -------------- ----------------- ---------------       --------- ------------- ---------
<S>                       <C>            <C>               <C>                   <C>       <C>           <C>
Revenues................     $ 3,446           $ 390            $(20)(/4/)        $ 3,816      $ 374      $ 4,190
Operating expenses......      (2,051)           (238)             20 (/4/)         (2,269)      (173)      (2,442)
Marketing, general and
 administrative.........        (597)            (44)            --                  (641)       (19)        (660)
Depreciation and
 amortization...........        (301)             (2)            (87)(/5/)           (390)      (171)        (561)
Residual costs of
 discontinued
 businesses.............         (85)            --              --                   (85)       --           (85)
                             -------           -----            ----              -------      -----      -------
Operating profit
 (loss).................         412             106             (87)                 431         11          442
Other income and
 expense, net...........          (6)            --              --                    (6)         2           (4)
Interest expense, net...         (97)             14             --                   (83)       (60)        (143)
                             -------           -----            ----              -------      -----      -------
Income (loss) from
 continuing operations
 before income taxes and
 minority interest in
 income of consolidated
 subsidiaries...........         309             120             (87)                 342        (47)         295
Income tax expense......        (176)            (42)            --                  (218)       (21)        (239)
Minority interest in
 income of consolidated
 subsidiaries...........         (30)            --              --                   (30)        (2)         (32)
                             -------           -----            ----              -------      -----      -------
Income (loss) from
 continuing operations..     $   103           $  78            $(87)             $    94      $ (70)     $    24
                             =======           =====            ====              =======      =====      =======
Income from continuing
 operations per share:
  Basic.................     $   .15                                              $   .13                 $   .03
  Diluted...............     $   .15                                              $   .12                 $   .03
Weighted average shares
 outstanding
  Basic.................         694                              57 (/2/)(/6/)       751                     751
  Diluted...............         710                              60                  770                     770
</TABLE>

          See accompanying notes to unaudited CBS/King World pro forma
                    combined condensed financial statements.

                                       35
<PAGE>


                    UNAUDITED CBS/KING WORLD PRO FORMA
                   COMBINED CONDENSED STATEMENT OF OPERATIONS

                      For the Year Ended December 31, 1998

                    (in millions, except per share amounts)

<TABLE>
<CAPTION>
                                               King World          Pro Forma          Pro Forma Adjustments
                                             Twelve months      Adjustments for       Combined      For        CBS
                                                 ended             CBS/King           CBS/King   Other CBS  Pro Forma
                          CBS Historical November 30, 1998(/7/)  World Merger           World   Events(/8/) Combined
                          -------------- ---------------------- ---------------       --------- ----------- ---------
<S>                       <C>            <C>                    <C>                   <C>       <C>         <C>
Revenues................     $ 6,805             $ 705               $ (23)(/4/)       $ 7,487     $ 874     $ 8,361
Operating expenses......      (4,373)             (442)                 23 (/4/)        (4,792)     (450)     (5,242)
Marketing, general and
 administrative.........      (1,216)              (78)                --               (1,294)      (41)     (1,335)
Depreciation and
 amortization...........        (571)               (2)               (177)(/5/)          (750)     (363)     (1,113)
Residual costs of
 discontinued
 businesses.............        (163)              --                  --                 (163)      --         (163)
                             -------             -----               -----             -------     -----     -------
Operating profit
 (loss).................         482               183                (177)                488        20         508
Other income and
 expense, net...........          43               --                  --                   43        (5)         38
Interest expense, net...        (370)               34                 --                 (336)      (27)       (363)
                             -------             -----               -----             -------     -----     -------
Income (loss) from
 continuing operations
 before income taxes and
 minority interest in
 income of consolidated
 subsidiaries...........         155               217                (177)                195       (12)        183
Income tax expense......        (161)              (74)                --                 (235)      (85)       (320)
Minority interest in
 income of consolidated
 subsidiaries...........          (6)              --                  --                   (6)      (29)        (35)
                             -------             -----               -----             -------     -----     -------
Income (loss) from
 continuing operations..     $   (12)            $ 143               $(177)            $   (46)    $(126)    $  (172)
                             =======             =====               =====             =======     =====     =======
Basic and diluted loss
 from continuing
 operations per share...     $  (.02)                                                  $  (.06)              $  (.23)
Weighted average Basic
 and Diluted shares
 outstanding............         696                                    57 (/2/)(/6/)      753                   753
</TABLE>

          See accompanying notes to unaudited CBS/King World pro forma
                    combined condensed financial statements.

                                       36
<PAGE>


           NOTES TO UNAUDITED CBS/KING WORLD PRO FORMA COMBINED
                         CONDENSED FINANCIAL STATEMENTS

                  (tables in millions, except per share data)

(1) Basis of Presentation

   The purchase method of accounting has been used in the preparation of the
accompanying unaudited pro forma combined condensed financial statements. Under
this method of accounting, the purchase price is allocated to assets acquired
and liabilities assumed based on their respective fair values as of the
effective time of the CBS/King World merger. The excess of consideration paid
over the estimated fair value of net assets acquired will be recorded as
goodwill and amortized as a charge to earnings. For purposes of the unaudited
pro forma combined condensed financial statements, the preliminary fair values
of King World's assets and liabilities were estimated by CBS management based
primarily on information furnished by the management of King World. The final
allocation of the purchase price will be determined after the consummation of
the CBS/King World merger and will be based on appraisals and a comprehensive
final evaluation of the fair value of assets acquired and liabilities assumed
of King World.

(2) Purchase Price Information

   Pursuant to the merger agreement, shareholders of King World will receive
 .81 of a share of CBS common stock for each share of King World common stock
issued and outstanding at the consummation of the CBS/King World merger. The
total number of King World shares issued and outstanding during the period
subsequent to the CBS/King World merger announcement but prior to its
consummation is not anticipated to fluctuate from the ordinary course. For the
purpose of the pro forma combined condensed financial statements, the $40.8125
per share value of CBS common stock to be issued was calculated based upon the
market price per share at the close of business on March 31, 1999.

<TABLE>
   <S>                                                                  <C>
   Total estimated King World common shares outstanding................   70.8
   Exchange Ratio......................................................    .81
                                                                        ------
   Estimated CBS common shares to be issued............................   57.3
                                                                        ======
   Purchase Price:
   Estimated value of CBS common stock to be issued in connection with
    CBS/King World merger (57.3 shares at $40.8125 per share):
     Common Stock, $1.00 par value..................................... $   57
     Capital in excess of par value....................................  2,282
   Estimated fair value of stock options assumed.......................    330
                                                                        ------
   Estimated net increase in CBS equity................................ $2,669
                                                                        ======
</TABLE>

                                       37
<PAGE>


           NOTES TO UNAUDITED CBS/KING WORLD PRO FORMA COMBINED

                CONDENSED FINANCIAL STATEMENTS (continued)

                  (tables in millions, except per share data)


(3) Purchase Price and Elimination of Historical Balances

   To record the purchase price paid in connection with the CBS/King World
merger as described in Note 1 and Note 2 above:

<TABLE>
   <S>                                                                   <C>
   Estimated net increase in CBS equity (see Note 2).................... $2,669
   Less: Shareholders' equity of King World at June 30, 1999
     Common stock.......................................................     (1)
     Capital in excess of par value.....................................   (151)
     Common stock held in treasury......................................    446
     Retained earnings.................................................. (1,257)
   Adjustments:
   Add: Estimated accrued transaction costs.............................     25
                                                                         ------
   Excess purchase price over fair value of net assets acquired......... $1,731
                                                                         ======
</TABLE>

   The above pro forma adjustments are based on preliminary estimates. The
final allocation of the purchase price will be determined after the
consummation of the CBS/King World merger and will be based on appraisals and a
comprehensive final evaluation of the fair value of assets acquired and
liabilities assumed of King World. As further analysis is performed, these
estimates may be revised at a later date.

(4) Existing Relationship Between CBS and King World

   Through an existing agreement with King World, CBS' owned-and-operated
television stations pay for some of King World's programming. The following
adjustments have been made to eliminate the balances associated with the
transactions between CBS and King World:

<TABLE>
   <S>                                                                      <C>
   Balance Sheet
   Customer receivables/Accounts payable at June 30, 1999.................. $ 5
   Statements of Operations
   Revenue/operating expenses for the six months ended June 30, 1999....... $20
   Revenue/operating expenses for the year ended December 31, 1998......... $23
</TABLE>

(5) Amortization of Goodwill

   The pro forma adjustments are based on preliminary estimates. The final
allocation of the purchase price will be determined after the consummation of
the CBS/King World merger and will be based on appraisals and a comprehensive
final evaluation of the fair value of assets acquired and liabilities assumed
of King World. As further analysis is performed, including obtaining appraisals
for identifiable intangible assets and programming commitments acquired, these
estimates may be significantly revised, including the estimated amortization
periods. Estimated goodwill amortization is computed on a straight-line basis
over a 10-year period. If goodwill amortization had been computed assuming a
20-year period, pro forma operating results for the six months ended June 30,
1999 and for the year ended December 31, 1998 on a pre- and post-tax basis
would have improved by $43 million and $89 million, respectively, or
approximately $.06 and $.12 per share, respectively, on both a basic and
diluted basis.


                                       38
<PAGE>


           NOTES TO UNAUDITED CBS/KING WORLD PRO FORMA COMBINED

                CONDENSED FINANCIAL STATEMENTS (continued)

                  (tables in millions, except per share data)


(6) Average Shares Outstanding

   The average CBS common shares outstanding used in calculating pro forma
income (loss) per common share from continuing operations, as adjusted for
Other CBS Events, are calculated assuming that the estimated number of shares
of CBS common stock to be issued in connection with the CBS/King World merger
were outstanding from January 1, 1998. For the six months ended June 30, 1999,
the average common shares outstanding used in calculating pro forma combined
diluted income per share include the impact of options to purchase shares of
common stock. Shares of common stock issuable under deferred compensation
arrangements were not included in computing pro forma diluted income per common
share for the six months ended June 30, 1999, because their inclusion would
result in increased income per common share. Shares of common stock issuable
under deferred compensation arrangements approximated 3 million for the six
months ended June 30, 1999. For the year ended December 31, 1998, options to
purchase shares of common stock as well as shares issuable under deferred
compensation arrangements were not included in computing pro forma diluted
income per common share because their inclusion would result in a smaller loss
per common share. For the year ended December 31, 1998, options to purchase
shares of common stock as well as common stock issuable under deferred
compensation arrangements approximated 21 million shares.

(7) King World Condensed Statements of Operations

   The King World condensed statement of operations for the six months ended
May 31, 1999 is calculated by adding the King World second quarter and third
quarter statements of operations as filed in its Quarterly Reports on Form 10-Q
for the three-month periods ended February 28, 1999 and May 31, 1999,
respectively.

   The King World condensed statement of operations for the twelve month period
ended November 30, 1998 is calculated by adding the King World first quarter
statement of operations as filed in its Quarterly Report on Form 10-Q for the
three-month period ended November 30, 1998, and subtracting the prior year
first quarter statement of operations as filed in their Quarterly Report on
Form 10-Q for the period ended November 30, 1997, from its total year 1998
statement of operations as filed in its Annual Report on Form 10-K for the
fiscal year ended August 31, 1998.

(8) Other CBS Events

   The unaudited pro forma combined condensed financial statements are
presented after giving effect to the following Other CBS Events:

Acquisition of American Radio by CBS

   On June 4, 1998, CBS acquired the radio operations of American Radio for
$1.4 billion in cash plus the assumption of debt with a fair value of
approximately $1.3 billion. This acquisition has been accounted for under the
purchase method of accounting.

Probable Acquisition of Outdoor Systems by Infinity

   On May 27, 1999, Infinity signed a definitive agreement to acquire Outdoor
Systems for approximately $8.7 billion which includes the assumption of debt
with a fair value of approximately $1.9 billion. This acquisition will be
accounted for under the purchase method of accounting. In connection with this
acquisition Infinity will issue approximately 231 million shares of its Class A
common stock which will dilute CBS' equity

                                       39
<PAGE>


           NOTES TO UNAUDITED CBS/KING WORLD PRO FORMA COMBINED

                CONDENSED FINANCIAL STATEMENTS (continued)

                  (tables in millions, except per share data)

ownership in Infinity to approximately 65 percent. The consummation of the
acquisition is subject to conditions, including the expiration or termination
of the waiting period under the HSR Act and the approval of Outdoor Systems and
Infinity shareholders. In connection with the HSR Act filing, Infinity and
Outdoor Systems have received a second request for information from the
Department of Justice, to which they are responding.

Infinity Initial Public Offering

   In 1998, CBS formed a new company, named Infinity, comprising the radio and
outdoor advertising operations of CBS. In December 1998, Infinity sold 18.2
percent of its common stock in an initial public offering, generating proceeds
of approximately $3 billion. These proceeds were used to pay down an
intercompany note payable to CBS. CBS used the proceeds of the payment on the
note to pay down existing debt under the CBS revolving credit facility and
other debt of CBS and made investments in short-term marketable securities.

   The following table sets forth the estimated adjustments affecting CBS'
consolidated financial statements for the inclusion of the probable acquisition
of Outdoor Systems by Infinity. In that regard, the historical statement of
position at June 30, 1999, has been incorporated into the pro forma financial
information and is adjusted to reflect the acquisition purchase price as well
as other items such as: the repayment of long-term debt; the step up in value
of long-term debt instruments; the elimination of existing debt financing
costs; the accrual for the estimated transaction costs; and the recognition of
the estimated excess purchase price over the fair value of assets acquired as
goodwill. As further analysis is performed, including appraisals on
identifiable tangible and intangible assets acquired and liabilities assumed,
these estimates may be significantly revised including the estimated
amortization periods. Minority interest in equity of consolidated subsidiaries
has also been adjusted to reflect Infinity's distribution of its stock in
connection with the acquisition of Outdoor Systems and thus the reduction of
CBS' equity interest in Infinity from approximately 82 percent to approximately
65 percent.

                                       40
<PAGE>



           NOTES TO UNAUDITED CBS/KING WORLD PRO FORMA COMBINED

                CONDENSED FINANCIAL STATEMENTS (continued)

                  (tables in millions, except per share data)


<TABLE>
<CAPTION>
                                           Outdoor                 Adjustments
                                           Systems     Pro Forma  For Other CBS
                                        June 30, 1999 Adjustments    Events
                                        ------------- ----------- -------------
<S>                                     <C>           <C>         <C>
ASSETS:
Cash and cash equivalents.............     $   13       $ (548)      $ (535)
Customer receivables, net.............        164          --           164
Deferred income taxes.................         13          --            13
Prepaid and other current assets......         89          --            89
                                           ------       ------       ------
Total current assets..................        279         (548)        (269)
Property and equipment, net...........      1,895          --         1,895
Goodwill, net.........................        604        6,023        6,627
Other intangible and noncurrent
 assets...............................         49           18           67
                                           ------       ------       ------
Total assets..........................     $2,827       $5,493       $8,320
                                           ======       ======       ======
LIABILITIES AND SHAREHOLDERS' EQUITY:
Current maturities of long-term debt..     $  186       $  --        $  186
Accounts payable, accrued and other
 liabilities..........................         73           15           88
                                           ------       ------       ------
Total current liabilities.............        259           15          274
Long-term debt........................      1,645         (473)       1,172
Other noncurrent liabilities..........        112          (10)         102
                                           ------       ------       ------
Total liabilities.....................      2,016         (468)       1,548
                                           ------       ------       ------
Minority interest in equity of
 consolidated subsidiaries............        --         3,964        3,964
Shareholders' equity:
Common stock..........................          2           (2)         --
Capital in excess of par value........        764        2,044        2,808
Common stock held in treasury, at
 cost.................................         (4)           4          --
Retained earnings.....................         55          (55)         --
Accumulated other comprehensive loss..         (6)           6          --
                                           ------       ------       ------
Total shareholders' equity............        811        1,997        2,808
                                           ------       ------       ------
Total liabilities and shareholders'
 equity...............................     $2,827       $5,493       $8,320
                                           ======       ======       ======
</TABLE>

                                       41
<PAGE>


           NOTES TO UNAUDITED CBS/KING WORLD PRO FORMA COMBINED

                CONDENSED FINANCIAL STATEMENTS (continued)

                  (tables in millions, except per share data)


   The following table combines the above mentioned Other CBS Events as if
these transactions had occurred as of January 1, 1999 and were reflected in
CBS' results of operations for the six-month period ended June 30, 1999:

<TABLE>
<CAPTION>
                                          Outdoor                  Adjustments
                                          Systems     Pro Forma   For Other CBS
                                       June 30, 1999 Adjustments     Events
                                       ------------- -----------  -------------
<S>                                    <C>           <C>          <C>
Revenues..............................     $ 374        $ --          $374
Operating expenses....................      (173)         --          (173)
Marketing, general and
 administrative.......................       (19)         --           (19)
Depreciation and amortization.........       (71)        (100)(d)     (171)
                                           -----        -----         ----
Operating profit (loss)...............       111         (100)          11
Other income and expense, net.........         2          --             2
Interest expense, net.................       (74)          14 (e)      (60)
                                           -----        -----         ----
Income (loss) from continuing
 operations before income taxes and
 minority interest in income of
 consolidated subsidiaries............        39          (86)         (47)
Income tax expense....................       (15)          (6)(c)      (21)
Minority interest in income of
 consolidated subsidiaries............       --            (2)(f)       (2)
                                           -----        -----         ----
Income (loss) from continuing
 operations...........................     $  24        $ (94)        $(70)
                                           =====        =====         ====
</TABLE>

                                       42
<PAGE>


           NOTES TO UNAUDITED CBS/KING WORLD PRO FORMA COMBINED

                CONDENSED FINANCIAL STATEMENTS (continued)

                  (tables in millions, except per share data)


   The following table combines the above mentioned Other CBS Events as if
these transactions had occurred as of January 1, 1998 and were reflected in
CBS' results of operations for the year ended December 31, 1998:

<TABLE>
<CAPTION>
                            American Radio Acquisition                 Outdoor Systems Acquisition
                          -------------------------------             -------------------------------
                          American
                           Radio                American              Outdoor                Outdoor  Adjustments
                          through                 Radio               Systems                Systems      For
                          June 4,   Pro Forma   Pro Forma Infinity    December  Pro Forma   Pro Forma  Other CBS
                            1998   Adjustments  Combined    IPO       31, 1998 Adjustments  Combined    Events
                          -------- -----------  --------- --------    -------- -----------  --------- -----------
<S>                       <C>      <C>          <C>       <C>         <C>      <C>          <C>       <C>
Revenues................    $168      $ --        $ 168    $ --         $706      $ --        $ 706      $ 874
Operating expenses......    (119)       --         (119)     --         (331)       --         (331)      (450)
Marketing, general and
 administrative.........      (4)       --           (4)     --          (37)       --          (37)       (41)
Depreciation and
 amortization...........     (28)       (10)(a)     (38)     --         (123)      (202)(d)    (325)      (363)
                            ----      -----       -----    -----        ----      -----       -----      -----
Operating profit
 (loss).................      17        (10)          7      --          215       (202)         13         20
Other income and
 expense, net...........     --         --          --       --           (5)       --           (5)        (5)
Interest expense, net...     (30)       (45)(b)     (75)     169 (g)    (138)        17 (e)    (121)       (27)
                            ----      -----       -----    -----        ----      -----       -----      -----
Income (loss) from
 continuing operations
 before income taxes and
 minority interest in
 income of consolidated
 subsidiaries...........     (13)       (55)        (68)     169          72       (185)       (113)       (12)
Income tax expense......       9         10 (c)      19      (67)(c)     (31)        (6)(c)     (37)       (85)
Minority interest in
 income of consolidated
 subsidiaries...........     --         --          --       (13)(f)     --         (16)(f)     (16)       (29)
                            ----      -----       -----    -----        ----      -----       -----      -----
Income (loss) from
 continuing operations..    $ (4)     $ (45)      $ (49)   $  89        $ 41      $(207)      $(166)     $(126)
                            ====      =====       =====    =====        ====      =====       =====      =====
</TABLE>

   Pro forma adjustments giving effect to the Other CBS Events in the unaudited
pro forma combined condensed financial statements reflect the following:

  (a) American Radio acquisition--amortization of goodwill and identifiable
      intangible assets, including FCC licenses on a straight-line basis over
      40 years.

  (b) Increase in interest expense resulting from borrowings under CBS'
      credit facility to finance the acquisition of American Radio including
      the repayment of a portion of American Radio revolver borrowings in
      conjunction with the consummation of the acquisition.

  (c) Income tax expense on the pro forma results of operations and the pro
      forma adjustments, excluding non-deductible goodwill amortization, is
      calculated at a 40 percent marginal tax rate.

                                       43
<PAGE>


           NOTES TO UNAUDITED CBS/KING WORLD PRO FORMA COMBINED

                CONDENSED FINANCIAL STATEMENTS (continued)

                  (tables in millions, except per share data)


  (d) Outdoor Systems acquisition--amortization of goodwill and identifiable
      intangible assets on a straight-line basis over 30 years.

  (e) Reduction in interest expense resulting from the repayment of Outdoor
      Systems' credit facility with credit facility borrowings of Infinity
      where average borrowing rates are more favorable than previously
      experienced by Outdoor Systems. In addition, the reduction of interest
      expense reflects the recording of all debt instruments assumed at fair
      value within the pro forma financial statements. These reductions were
      partially offset by incremental interest expense recognized as a result
      of the assumed deconsolidation of Infinity from the CBS consolidated
      income tax return.

  (f) The adjustment to minority interest in income of consolidated
      subsidiaries reflects CBS' ownership interest dilution resulting from
      Infinity's assumed issuance of common stock to acquire Outdoor Systems.
      In addition, for the year ended December 31, 1998 the adjustment
      reflects the impact of Infinity's initial public offering. As a result
      of the December 1998 initial public offering CBS' equity ownership in
      Infinity was reduced to approximately 81.8 percent and will be further
      reduced to approximately 65 percent after Infinity's probable
      acquisition of Outdoor Systems.

  (g) Reduction in the interest expense represents savings resulting from the
      assumed repayment of debt with the proceeds received from the Infinity
      public offering.

                                       44
<PAGE>


     THE VIACOM SHAREHOLDERS' CONSENTS AND CBS SHAREHOLDERS' MEETINGS



Matters to be Consented To or Voted On

   Viacom. Holders of Viacom Class A common stock are being asked to take
action by written consent to approve:

  1. if the merger is structured as a merger of CBS into Viacom, the
     adoption of the merger agreement;

  2. if the merger is structured as a merger of CBS into Viacom/CBS LLC, the
     adoption of the proposed new Restated Certificate of Incorporation of
     Viacom;

  3. if the merger is structured as a merger of CBS into Viacom/CBS LLC, the
     issuance of up to        shares of Viacom Class B common stock to the
     holders of CBS common stock and up to        shares of Viacom Series C
     preferred stock to the holders of CBS Series B preferred stock in the
     merger, in accordance with the terms set forth in the merger agreement;
     and

  4. the amendment to increase the number of shares of Viacom Class B common
     stock authorized to be issued under the Viacom incentive plan by an
     additional 10 million shares.

See "The Merger" and "The Merger Agreement." The Board of Directors of Viacom
has declared that the merger agreement is advisable, has unanimously approved
the merger agreement and unanimously recommends that Viacom shareholders
approve the adoption of the merger agreement. The Board of Directors of Viacom
has also unanimously approved the issuance of Viacom Class B common stock and
Viacom Series C preferred stock in connection with the merger and declared
advisable and approved the proposed new Restated Certificate of Incorporation,
and unanimously recommends that you approve the issuance of Viacom Class B
common stock in connection with the merger and to the adoption of the proposed
new Restated Certificate of Incorporation. In addition, the Board of Directors
has approved the amendment to increase the number of shares of Viacom Class B
common stock authorized to be issued under the Viacom incentive plan and
unanimously recommends that you approve the amendment.

   CBS. At the CBS special meeting, holders of CBS common stock are being asked
to adopt the merger agreement. The CBS Board has determined that the merger is
in the best interests of CBS, has unanimously approved the merger and the
merger agreement and unanimously recommends that CBS shareholders vote "for"
the adoption of the merger agreement.

Record Date; Shareholders Entitled to Consent or Vote; Quorum

   Viacom. Only holders of record of Viacom Class A common stock at the close
of business on the Viacom record date are entitled to take action by written
consent concerning the proposals. On the record date, November 12, 1999, .
shares of Viacom Class A common stock were issued and outstanding and held by
approximately . holders of record.

   CBS. Only holders of record of CBS common stock and CBS Series B preferred
stock at the close of business on the CBS record date, November 17, 1999, are
entitled to receive notice of and to vote at the CBS special meeting. On .,
1999, . shares of CBS common stock were issued and outstanding and held by
approximately . holders of record and . shares of CBS Series B preferred stock
were issued and outstanding and held by approximately . holders of record. The
presence at the CBS special meeting, either in person or by proxy, of
shareholders entitled to cast at least a majority of the votes that all
shareholders are entitled to cast is required in order for a quorum to be
present for purposes of voting on the adoption of the merger agreement. In the
event that a quorum is not present at the CBS special meeting, it is expected
that the meeting will be adjourned or postponed to solicit additional proxies.
Holders of record of CBS common stock on the record date are each entitled to
one vote per share on the matter to be voted on at the CBS special meeting.
Holders of record of CBS Series B preferred stock on the record date are each
entitled to 1,000 votes per share on the matter to be voted on at the CBS
special meeting.

                                       45
<PAGE>


Votes Required

   Viacom. The adoption of the merger agreement and the proposed new Viacom
Restated Certificate of Incorporation, the issuance of Viacom Class B common
stock and Viacom Series C preferred stock in connection with the merger and the
amendment to the Viacom incentive plan require the affirmative vote of a
majority of the shares of Viacom Class A common stock issued and outstanding on
the record date. You are urged to return a completed and signed written consent
by 12:00 noon, New York City Time, on  . , 1999. Approval of these matters by
Viacom's shareholders will occur when the holders of a majority of the
outstanding Viacom Class A common stock delivers properly dated and executed
consents to Viacom. National Amusements is expected to deliver its consent at
12:00 noon, New York City time, on  . , 1999.

   The approval of the issuance of Viacom Class B common stock and Viacom
Series C preferred stock in connection with the merger and the amendment to the
Viacom incentive plan is required by the rules of the NYSE governing
corporations with securities listed on the NYSE.

   CBS. The adoption of the merger agreement requires the affirmative vote of a
majority of the votes cast by all shareholders entitled to vote at the CBS
special meeting.

   The CBS Series B preferred stock was issued to Gaylord-Entertainment Company
in connection with the acquisition by CBS of broadcast station KTVT-TV Dallas-
Fort Worth, Texas, on October 12, 1999. Although we believe that, under
Pennsylvania law, the holders of CBS Series B preferred stock are not entitled
to a separate class or series vote on the adoption of the merger agreement,
Gaylord has agreed, in the event the holders of CBS Series B preferred stock
are entitled to vote separately as a class or series, to vote the CBS Series B
preferred stock in favor of the adoption of the merger agreement, and has given
its proxy for this vote to CBS. Any subsequent purchaser of the CBS Series B
preferred stock is required to agree, in the event the holders of CBS Series B
preferred stock are entitled to vote separately as a class or series, to vote
in favor of the adoption of the merger agreement, and to be bound by the proxy
given by Gaylord to CBS. Therefore, in the event the holders of CBS Series B
preferred stock are entitled to vote separately as a class or series, approval
of the adoption of the merger agreement by the holders of the CBS Series B
preferred stock is assured.

Submission of CBS Proxies

   Shares represented by properly executed proxy cards received in time for
CBS' special shareholder meeting will be voted at the special meeting in the
manner specified by the holders. Properly executed proxy cards that do not
contain voting instructions will be voted in favor of adoption of the merger
agreement.

   Abstentions may be specified on all proposals except that shares of CBS
common stock or CBS Series B preferred stock represented at the applicable
special meeting but not voting, including shares of CBS common stock or CBS
Series B preferred stock for which proxy cards have been received, but with
respect to which holders of shares have abstained on any matter, will be
treated as present at the special meeting for purposes of determining the
presence or absence of a quorum for the transaction of all business.

   For voting purposes at the special meeting, only shares affirmatively voted
in favor of a proposal, including properly executed proxy cards not containing
voting instructions, will be counted as votes in favor of such proposal. With
respect to CBS shareholders, the failure to submit a proxy or to vote in person
or the abstention from voting will have no effect on the outcome of the vote.
In addition, under the applicable rules of the NYSE, brokers who hold shares in
street name for customers who are the beneficial owners of such shares are
prohibited from submitting a proxy to vote such customers' shares with respect
to the proposal to adopt the merger agreement absent instructions from the
beneficial owners of these shares. These are referred to as broker non-votes.
With respect to CBS shareholders, broker non-votes will have no effect on the
outcome of the vote.

   The persons named as proxies by a Viacom or CBS shareholder may propose and
vote for one or more adjournments of the applicable special meeting, including,
without limitation, adjournments to permit further solicitations of proxies in
favor of any proposal; provided, however, that a proxy that is voted against
the proposal to adopt the merger agreement may not be voted in favor of any
such adjournment or postponement.


                                       46
<PAGE>


Submission of Consents

   Properly executed consents received by 12:00 noon, ., 1999 that do not
specify which proposals are consented to will be counted in favor of the
adoption of the merger agreement and the proposed new Restated Certificate of
Incorporation, the issuance of Viacom Class B common stock and Viacom Series C
preferred stock in connection with the merger and the amendment to the Viacom
incentive plan. The failure to submit a properly dated and executed consent
card will have the same effect as a vote against the adoption of the merger
agreement and the proposed new Viacom Restated Certificate of Incorporation and
the issuance of Viacom Class B common stock and Viacom Series C preferred stock
in connection with the merger and the amendment to Viacom's incentive plan.
Brokers who hold shares in street name for customers who are the beneficial
owners of such shares are prohibited from submitting a written consent for
these shares without instructions from the customers. Without instructions,
brokers will not submit consents.

Revocation of Viacom Consents

   You may revoke your consent or, if you have previously revoked your consent,
submit a new written consent at any time prior to the time that consents from
the holders of a majority of the outstanding Viacom Class A common stock are
delivered to Viacom, which is expected to occur at 12:00 noon, New York City
time, on  . , 1999 by sending your revocation or new written consent to
Investor Relations at Viacom, 1515 Broadway, 53rd floor, New York, New York
10036.

Revocability of CBS Proxies

   The grant of a proxy on the enclosed CBS form of proxy does not preclude a
shareholder from voting in person. With the exception of the irrevocable proxy
granted to CBS by the holders of CBS Series B preferred stock, a shareholder
may revoke a proxy at any time prior to its exercise in one of three ways:

  . by filing with the Senior Vice President, General Counsel and Secretary
    of Viacom, in the case of a Viacom shareholder, or the Vice President,
    Deputy General Counsel and Secretary of CBS, in the case of a CBS
    shareholder, a duly executed revocation of proxy;

  . by submitting another duly executed proxy bearing a later date; or

  . by appearing at the applicable special meeting and voting in person.
    Attendance at the relevant special meeting will not, in and of itself,
    constitute revocation of a proxy.

Solicitation of Consents and Proxies

   Each of Viacom and CBS will bear the cost of the solicitation of consents
and proxies from its own shareholders, except that Viacom and CBS will share
equally the cost of printing this joint proxy statement/prospectus and the fees
associated with the filing of this joint proxy statement/prospectus with the
SEC. In addition to solicitation by mail, the directors, officers and employees
of each of Viacom and CBS may solicit consents or proxies from shareholders of
their respective company by telephone or telegram or in person. Arrangements
will also be made with brokerage houses and other custodians, nominees and
fiduciaries for the forwarding of solicitation material to the beneficial
owners of stock held of record by these persons, and Viacom and CBS will
reimburse these custodians, nominees and fiduciaries for their reasonable out-
of-pocket expenses.

   . will assist in the solicitation of proxies by CBS. . will receive a fee of
$., plus costs and expenses, for its services.

   Neither the Viacom Board nor the CBS Board is aware of any matter other than
those set forth in this joint proxy statement/prospectus that will be brought
before the CBS special meeting. If, however, other matters are properly
presented at the CBS special meeting, proxies will be voted in accordance with
the discretion of the holders of such proxies.

                SHAREHOLDERS SHOULD NOT SEND STOCK CERTIFICATES

                    WITH THEIR PROXY CARDS OR CONSENTS.

                                       47
<PAGE>

                                   THE MERGER

   The discussion in this joint proxy statement/prospectus of the merger and
the principal terms of the merger agreement is subject to, and qualified in its
entirety by reference to, the merger agreement, a copy of which is attached to
this joint proxy statement/prospectus as Annex A and is incorporated herein by
reference.

Background to the Merger

   On August 5, 1999, the FCC announced that it had adopted new regulations
that, for the first time, would permit a single person to own two television
stations in a single market, subject to limitations. Since that date, it has
been widely reported that numerous owners of television stations have been
seeking opportunities to acquire or sell stations in reliance on the new rules.

   On August 11, at the request of Mr. Karmazin, Mr. Karmazin and Mr. Redstone
met at the offices of Viacom. Mr. Karmazin reviewed with Mr. Redstone the
businesses of CBS and discussed with Mr. Redstone various possible transactions
between the two companies, including an exchange of assets in the television
and cable television businesses and ways in which various businesses of the two
companies could be combined.

   On August 12, Mr. Redstone called Mr. Karmazin and suggested that they meet
again, together with Philippe Dauman and Thomas Dooley, Viacom's Deputy
Chairmen and Executive Vice Presidents, to discuss further the possible
transactions discussed at their August 11 meeting.

   On August 16, Messrs. Redstone, Dauman and Dooley met with Mr. Karmazin. Mr.
Karmazin proposed various alternative transactions involving the two companies,
including swapping Viacom's television stations for the cable television
networks of CBS and combining the entire businesses of Viacom and CBS. Mr.
Karmazin emphasized the complementary nature of the assets of the two
companies. Mr. Redstone indicated interest in the swap transaction, but did not
express a conclusion regarding a possible merger. Mr. Karmazin said that he
would like to make a more detailed presentation regarding the businesses of CBS
to Messrs. Redstone, Dauman and Dooley. The parties agreed to meet again on
August 24.

   On August 24, Mr. Karmazin again met with Messrs. Redstone, Dauman and
Dooley. Mr. Karmazin presented information regarding CBS, describing the
performance of its assets, strategies for growth and the benefits of selling
advertising across different advertising media. At the conclusion of the
presentation, Mr. Karmazin again suggested a merger involving the two
companies, proposing that CBS acquire Viacom at a premium to market value. Mr.
Redstone indicated that he would not be interested in selling his stake in
Viacom, but indicated that, in light of the strong strategic fit between the
two companies, he would consider a merger of equals priced at market value, in
which Mr. Redstone's controlling interest in Viacom was preserved in the
combined company through the issuance of Viacom's non-voting Class B common
stock to the shareholders of CBS. Mr. Redstone indicated that, if such a
transaction was pursued, he would recommend a role for Mr. Karmazin in which he
would serve as President and Chief Operating Officer of the combined company.
Mr. Karmazin indicated his willingness to consider these terms and said that he
would like to discuss such a transaction with members of the CBS Board of
Directors.

   On August 26, the CBS Board held a special meeting at which Mr. Karmazin
reviewed for the Board the conversations and contacts he had had with Mr.
Redstone to date and the current status of discussions regarding the structure
and terms of a possible transaction with Viacom. Mr. Karmazin and Fredric G.
Reynolds, CBS' Executive Vice President and Chief Financial Officer, also
reviewed for the Board the capital structure and share ownership of Viacom. The
CBS Board authorized Mr. Karmazin to continue his discussions with Mr.
Redstone. Following the August 26 meeting, detailed publicly available
information and analyst reports relating to the share ownership of Viacom were
distributed to the CBS Board.

   On August 25 and 26, representatives of Shearman & Sterling, counsel to
Viacom, held various discussions with representatives of Cravath, Swaine &
Moore, legal counsel to CBS, and representatives of

                                       48
<PAGE>

Evercore, financial advisors to CBS, concerning the structure of a possible
transaction, exchange ratio mechanisms and related matters.

   On August 26, Mr. Redstone and Mr. Karmazin met to continue their
discussions regarding management of the combined company and ways to assure
the CBS Board of Directors as to the management of the combined company in
light of the controlling shareholdings of Mr. Redstone.

   On August 27, representatives of Viacom, Morgan Stanley & Co. Incorporated,
financial advisors to Viacom, and Shearman & Sterling met with representatives
of CBS, Evercore and Cravath, Swaine & Moore to discuss the structure and
exchange ratio for a possible transaction, board composition and management
issues, the due diligence review process and related matters. The parties also
finalized and executed a confidentiality agreement at this meeting.

   On August 29, senior executives and professional advisors of each of Viacom
and CBS met to exchange financial, legal and business due diligence
information. The due diligence process, which included review of documents and
interviews with executives and professional advisors of each company,
continued through the signing of the merger agreement.

   On August 30, Mr. Redstone and Mr. Karmazin discussed further the proposed
governance of the combined company. The discussions related to Mr. Karmazin's
proposed responsibilities and powers as Chief Operating Officer and Mr.
Redstone's responsibilities and powers as Chief Executive Officer as well as
whether the proposed responsibilities of the Chief Operating Officer were
inconsistent with the continued involvement of Messrs. Dauman and Dooley as
senior managers of Viacom following the merger. Mr. Redstone advised Mr.
Karmazin that Messrs. Dauman and Dooley had indicated to Mr. Redstone that, in
view of the strategic benefits to Viacom of the proposed transaction, they
would be willing to resign from their respective management positions at
Viacom at the closing of the transaction if that would facilitate the
resolution of the governance arrangements for the combined company. Messrs.
Redstone and Karmazin also confirmed their understanding that the combined
board of directors would consist of a majority of Viacom representatives.
These points were discussed further on August 31 between Mr. Redstone and Mr.
Karmazin.

   On August 30, Shearman & Sterling delivered a draft merger agreement to
Cravath, Swaine & Moore.

   On August 31, the CBS Board held a special meeting to continue the Board's
previous discussions regarding a possible transaction between CBS and Viacom.
Mr. Karmazin described in detail the discussions with Mr. Redstone leading up
to the current proposal for a merger of CBS with Viacom. Mr. Karmazin and
other members of CBS' senior management discussed with the CBS Board their
views of various aspects of the proposed transaction. Louis Briskman, CBS'
Executive Vice President and General Counsel, and representatives of Cravath,
Swaine & Moore discussed with the CBS Board its fiduciary duties with regard
to its consideration of the proposed transaction under applicable law.
Representatives of Evercore discussed with the CBS Board their views and
preliminary analyses of the financial aspects of the proposed transaction. The
CBS Board reviewed and considered, among other things, the initial results of
the due diligence investigation conducted to date, the proposed terms of the
transaction, the impact of the proposed transaction on CBS' other pending
transactions and the proposed terms relating to the management, board
representation and governance of the combined company. Following extensive
discussion of these matters, the CBS Board directed Mr. Karmazin to negotiate
further with Viacom on the basis of the CBS Board's recommendations with
respect to the matters discussed during the meeting. In particular, the CBS
Board directed Mr. Karmazin to negotiate arrangements substantially consistent
with the management, board representation and governance arrangements which
are described on pages 69 through 72.

   Following the CBS Board meeting on August 31, Cravath, Swaine & Moore and
Shearman & Sterling reviewed and discussed those areas identified by the CBS
Board of Directors as important for Mr. Karmazin to have delegated authority
to manage, those areas which a majority of the board of directors of the
combined company should have authority over and those areas requiring a
supermajority board vote, and the conceptual framework for implementing this
arrangement. Representatives of Cravath, Swaine & Moore and Shearman &

                                      49
<PAGE>


Sterling negotiated the terms of these arrangements, including related changes
to the Restated Certificate of Incorporation and By-laws of Viacom, together
with the terms and conditions of the merger agreement and Mr. Karmazin's
employment agreement, throughout the period from August 31 through the signing
of definitive documentation on September 6. In addition, Morgan Stanley, on
behalf of Viacom, and Evercore on behalf of CBS, continued to negotiate the
exchange ratio through September 2. The parties mutually agreed to an at market
exchange ratio. The negotiation of the exchange ratio involved discussions
concerning the appropriate measurement period for determining the market value
of Viacom and CBS without any premium. A fixed exchange ratio at market was
agreed to on or about September 3, subject to Board approvals.

   On September 2, the Board of Directors of Viacom, at a special meeting,
received a presentation regarding the proposed terms of the transaction from
Viacom's outside counsel, and a presentation from Morgan Stanley regarding the
financial terms of the transaction and discussed the proposed terms and the
risks and merits of the proposed transaction.

   On September 2, the special meeting of the CBS Board reconvened and Mr.
Karmazin recounted for the CBS Board the events that had transpired since the
meeting recessed on August 31. Mr. Karmazin described in detail the proposed
terms that had been negotiated with Viacom with respect to the corporate
governance of Viacom following consummation of the proposed transaction, and
explained to the CBS Board that such governance arrangements would be reflected
in the proposed new Restated Certificate of Incorporation and By-laws of Viacom
as well as in a voting agreement between National Amusements, the holder of a
majority of Viacom's voting stock, and CBS. Following extensive discussion
among the members of the CBS Board, Mr. Karmazin, other members of CBS' senior
management, representatives of Cravath, Swaine & Moore and representatives of
Evercore, the CBS Board directed Mr. Karmazin to negotiate definitive
agreements and related documentation based on the terms outlined by Mr.
Karmazin during the meeting.

   On September 5, the CBS Board held a special meeting to continue the Board's
discussions with respect to the proposed merger and to consider the merger
agreement and the transactions contemplated thereby, including the proposed
consideration to be issued to CBS shareholders and the proposed terms regarding
the powers of the board of directors, the chief executive officer and the chief
operating officer of Viacom following the merger. Mr. Karmazin and other
members of CBS' senior management, representatives of Cravath, Swaine & Moore
and representatives of Evercore made presentations to the CBS Board and
discussed with the CBS Board their views and analyses of various aspects of the
proposed transaction. Evercore delivered its oral opinion, which was
subsequently confirmed in writing, that, based upon the matters presented to
the CBS Board and as set forth in its opinion, as of such date, the exchange
ratio was fair, from a financial point of view, to the shareholders of CBS.

   After further deliberation, the CBS Board unanimously approved the merger
and the merger agreement and authorized, among other things, the execution of
the merger agreement, the voting agreement and the stockholder agreement and
unanimously recommended that CBS shareholders vote to adopt the merger
agreement.

   On September 5, the Compensation Committee of the Viacom Board met to review
and, subject to approval of the merger by the Viacom Board, approved the
proposed terms of Mr. Redstone's and Mr. Karmazin's employment agreements, the
resignation agreements for Messrs. Dauman and Dooley and the Viacom executive
severance plans. For a more complete description of these terms, see the
section entitled "Interest of Persons in the Merger--Senior Management
Arrangements."

   Also on September 5, at a special meeting of the Viacom Board, the Board
heard presentations on the results of the due diligence investigation and the
status of the negotiation of the merger agreement and related agreements and
received an updated presentation from Morgan Stanley. Morgan Stanley also
delivered to the Viacom Board its oral opinion that the exchange ratio was fair
from a financial point of view to Viacom. The Board also was briefed on and
ratified the actions of the Compensation Committee, in the case of the
resignation agreements of Messrs. Dauman and Dooley and the employment
agreement of Mr. Redstone, without the participation of such individuals. The
Board then discussed the proposed terms and conditions of the transaction
extensively, following which the Board adjourned the meeting in order to
consider the results of further negotiations.


                                       50
<PAGE>

   During the evening of September 5, management of CBS and Viacom and their
respective legal advisors continued their negotiations regarding the terms of
the merger agreement and, in particular, the proposed terms regarding the
respective powers of the board of directors, chief executive officer and chief
operating officer.

   On the morning of September 6, the Board of Directors of Viacom met and
reviewed the finalized terms of the proposed transactions. Following a
discussion, the Viacom Board unanimously approved the merger agreement and the
transactions contemplated thereby. In the afternoon of September 6, CBS and
Viacom executed the merger agreement, National Amusements executed the voting
agreement and the stockholder agreement, Viacom and Messrs. Redstone and
Karmazin executed their respective employment agreements, and Viacom executed
resignation agreements with Messrs. Dauman and Dooley.

   On October 8, 1999, the merger agreement was amended and restated to provide
for the issuance of Viacom Series C preferred stock in exchange for the CBS
Series B preferred stock issued to Gaylord in connection with CBS' acquisition
of KTVT-TV Dallas-Fort Worth from Gaylord. On November   , 1999, the merger
agreement was further amended and restated to provide for the alternative
structure of the merger as a merger of CBS with and into Viacom/CBS LLC.

Reasons for the Merger and Board Recommendations

 Viacom

   The Viacom Board carefully considered the terms of the merger and believes
that the merger serves the best interests of Viacom and its shareholders. As a
result, the Viacom Board declared that the merger agreement was advisable,
unanimously approved the merger agreement and unanimously recommends that the
Viacom shareholders vote "for" the proposal to adopt the merger agreement.

   The Viacom Board considered a number of factors, including those listed
below. The Viacom Board did not consider it practical, and did not try, to rank
or weigh the importance of each factor, and different members of the Viacom
Board may have given different weight to different factors. The Viacom Board
also considered presentations by, and consulted with, members of Viacom's
management as well as its financial advisors and outside and inside legal
counsel. The list of factors set forth below is not exhaustive but is believed
to include all material factors considered by Viacom's Board.

   CBS Assets and Relationship with the Existing Businesses of Viacom. The
Viacom Board considered the quality and breadth of the assets of CBS, including
the radio and outdoor advertising assets of Infinity, and its financial
condition, competitive position and prospects for growth. In particular, the
Board considered the complementary nature of the businesses of CBS and Viacom
in that Viacom is a leader in the cable television programming, motion picture
and television production businesses and CBS is a leader in the television
network distribution, television and radio broadcasting and outdoor advertising
businesses. The Board recognized the tremendous opportunities for the combined
company to reach large audiences and cross-promote and cross-market its assets
among various distribution outlets. Similarly, the Board recognized that the
combined company would have greater opportunities to increase its advertising,
licensing and other revenue than either company would on its own. The Board
also considered potential economies of scale by combining these businesses. The
Board took into account that the combined company would have an increased
dependence on the advertising market, but concluded that the risk of such
dependence was outweighed by the strategic benefits of the transaction.

   Financial Terms. The Viacom Board considered that the merger of equals
structure, in which no premium would be paid to the shareholders of either
company, would create a company with considerable financial resources. The
Viacom Board considered the historical trading ranges of Viacom Class B common
stock and CBS common stock as compared with the proposed exchange ratio. The
Viacom Board also considered the fact that the merger would be tax-free to
Viacom's shareholders. In addition, the Viacom Board considered the pro forma
effect of the proposed transaction on the financial condition and results of
the combined company and the price of CBS as compared with other comparable
companies using various methods of valuation.

   Management and Governance Provisions. The Viacom Board considered the
experience and accomplishments of Mr. Karmazin and other members of CBS
management and the benefits of Mr. Karmazin's service as President and Chief
Operating Officer and Mr. Redstone's continuing service as Chairman and Chief
Executive Officer to the Viacom shareholders. The Viacom Board weighed these
benefits against the limitations the proposed governance structure would impose
on its power to manage the combined company by majority

                                       51
<PAGE>

vote of the board of the combined company and concluded that these limitations
represented an acceptable balance of management responsibilities.

   Support of Sumner Redstone. The Viacom Board considered the fact that
Viacom's controlling shareholder, National Amusements, which in turn is
controlled by Mr. Redstone, supported the proposed transaction and was prepared
to sign a voting agreement, in which National Amusements would agree to vote
its shares in favor of the proposed transaction.

   Presentation and Opinion of Morgan Stanley. At its meeting on September 6,
the Viacom Board considered the financial presentation made to the Viacom Board
on September 5 and the oral opinion rendered by Morgan Stanley on September 5,
subsequently confirmed in writing, that, as of that date, the proposed exchange
ratio was fair to Viacom from a financial point of view.

   Regulatory Matters. The Viacom Board considered the fact that Viacom might
be required to divest or reduce its interest in United Paramount Network and
Viacom and/or CBS would be required to divest a number of television and radio
stations in the event that current law and regulations were not amended or
waived. The Viacom Board also considered the ability to obtain other necessary
regulatory approvals.

   Terms, Conditions, Termination Provisions and Termination Fee. The Viacom
Board reviewed the representations, warranties, covenants and conditions to
consummation of the proposed transaction and the circumstances under which CBS
would have the right to terminate the merger agreement. The Viacom Board
considered the fact that the vote of the Viacom shareholders was assured by
reason of the voting agreement to be entered into by National Amusements and
that CBS would have the right to terminate the merger agreement under specified
circumstances if there was a superior proposal. The Viacom Board considered the
circumstances in which a termination fee would be payable in the event that the
merger agreement was terminated. The Viacom Board considered that there could
be no assurance that the acquisition of Outdoor Systems by Infinity or King
World by CBS would be consummated. The Viacom Board also considered the fact
that the merger would not be conditioned on the completion of the pending CBS
transactions with King World and Outdoor Systems.

   THE VIACOM BOARD UNANIMOUSLY RECOMMENDS THAT THE HOLDERS OF VIACOM CLASS A
COMMON STOCK VOTE "FOR" THE ADOPTION OF THE MERGER AGREEMENT.

 CBS

   Reasons for the Merger. At its meeting on September 5, 1999, the CBS Board
of Directors determined that the merger is in the best interests of CBS, has
unanimously approved the merger and the merger agreement and unanimously
recommended that CBS shareholders vote to adopt the merger agreement.

   In reaching its decision to approve the merger and the merger agreement and
to recommend that CBS shareholders vote to adopt the merger agreement, the CBS
Board of Directors consulted with senior management and its financial and legal
advisors and considered a number of factors, including the following positive
factors:

  . recent trends in the entertainment and media industries and that a
    combination of Viacom, a leading "content provider" in the entertainment
    and media industries, with CBS, a leading distributor and marketer of
    programming, would create an even stronger global competitor in the
    entertainment and media industries;

  . the opportunity to create the premier seller of advertising in the media
    industry, which could result in increased advertising revenue for the
    combined company;

  . the opportunity for synergies and revenue generation through cross-
    promoting and cross-marketing the combined company's film, television,
    radio, theme park, home video, publishing, outdoor advertising and
    Internet businesses;


                                       52
<PAGE>

  . that the merger would benefit the shareholders of CBS because they would
    participate in the value generated by increases in the opportunities for
    revenue generation through their equity participation in Viacom;

  . the management and corporate governance arrangements agreed to between
    CBS and Viacom that would provide for a strong management team drawn from
    both companies that would work together to integrate the two companies,
    to realize growth opportunities, to achieve synergistic benefits, and to
    successfully implement strategies of the combined company, including
    that:

      . the Board of Directors of the combined company would be expanded
        from ten to eighteen directors. The eight additional directors will
        initially be selected from and designated by the Board of Directors
        of CBS and vacancies in this group will be filled during the
        initial three-year term by independent directors designated by
        these eight CBS directors;

      . Mr. Redstone, the current Chairman and Chief Executive Officer of
        Viacom, would continue to serve as Chairman and Chief Executive
        Officer of the combined company and would be responsible, in
        consultation with the President and Chief Operating Officer, for
        corporate policy and strategy;

      . Mr. Karmazin, the current President and Chief Executive Officer of
        CBS, would serve as President and Chief Operating Officer of the
        combined company, would directly report to the CEO and consult with
        the CEO on all major decisions and would have responsibility for
        the supervision, coordination and management of the combined
        company's business;

      . Mr. Karmazin, as President and Chief Operating Officer, would be
        entitled to manage the combined company's business, subject to the
        ability of the combined company's board of directors to take action
        with the approval of at least 14 directors. However, in a number of
        areas the President and Chief Operating Officer would not be
        entitled to act without the approval of, and the combined company's
        board would be entitled to act by, a majority of the directors; and

      . the governance arrangements described above would be in effect for
        a period of three years from the closing of the merger.

  . the expected qualification of the merger as a tax-free reorganization;

  . the oral opinion of Evercore, delivered on September 5, 1999, which was
    subsequently confirmed in a written opinion, a copy of which is attached
    as Annex I to this joint proxy statement/prospectus, that, subject to the
    assumptions and limitations contained in that opinion, as of that date,
    the exchange ratio was fair, from a financial point of view, to the
    shareholders of CBS, and the financial presentation made by Evercore to
    the CBS Board of Directors in connection with delivering that opinion;

  . the terms and conditions of the merger agreement, including the right of
    CBS to consider and negotiate superior proposals;

  . the financial condition, cash flows and results of operations of CBS and
    Viacom, on both a historical and prospective basis, which indicated that
    the combined company would enjoy financial strength immediately upon
    consummation of the merger;

  . the historical market prices and trading information with respect to CBS
    common stock and Viacom non-voting Class B common stock, including that
    the Viacom non-voting Class B common stock and the Viacom Class A common
    stock have historically traded at comparable levels;

  . that the complimentary nature of the businesses of CBS and Viacom would
    enable the combined company to maintain important relationships with
    customers, suppliers and employees;

  . the fact that CBS as an independent company has not fully participated in
    aspects of the media and entertainment industry where Viacom had
    particular strengths, such as MTV Networks and Paramount Pictures;

                                       53
<PAGE>

  . the belief that the terms of the merger agreement, including the parties'
    representations, warranties and covenants, and the conditions to their
    respective obligations are reasonable;
  . the fact that Viacom might be required to divest or reduce its interest
    in United Paramount Network and that Viacom and/or CBS would be required
    to divest a number of television and radio stations in the event that
    current law and regulations were not amended or waived;

  . the regulatory approvals required to complete the merger and the
    favorable prospects for receiving those approvals; and

  . satisfactory reports from CBS management and its advisors as to their due
    diligence investigations of Viacom.

   The CBS Board of Directors also identified and considered a number of
potentially negative factors in deliberations concerning the merger, including:

  . the status, timing and tax considerations relating to the potential
    split-off of Blockbuster to the shareholders of Viacom;

  . the existence of a controlling shareholder of the combined company
    following the merger and the non-voting security to be received by CBS
    shareholders in the merger;

  . the possible effects of the provisions regarding termination fees on the
    ability of a third party to make an unsolicited superior proposal;
  . the risk that the operations of CBS and Viacom might not be successfully
    integrated;
  . the risk that, despite the efforts of CBS and Viacom, key management and
    other personnel might not remain employed by the combined company after
    the merger; and
  . the risk that potential benefits of the merger might not be fully
    realized.

   The CBS Board of Directors believed that some of these risks were unlikely
to occur, while others could be avoided or mitigated by CBS, and that, overall
these risks were outweighed by the potential benefits of the merger.

   The discussion of the information and factors considered by the CBS Board of
Directors in making its decision is not intended to be exhaustive but is
believed to include all material factors considered by the CBS Board of
Directors. In view of the variety of material factors considered in connection
with its evaluation of the merger, the CBS Board of Directors did not find it
practicable to, and did not, quantify or otherwise assign relative weights to,
the specific factors considered in reaching its determination. In addition,
individual members of the CBS Board of Directors may have given different
weight to different factors.

   Recommendation of the CBS Board of Directors.  After careful consideration,
the CBS Board of Directors has determined that the merger is in the best
interests of CBS, has unanimously approved the merger and the merger agreement
and unanimously recommends that CBS shareholders vote "for" the adoption of the
merger agreement.

Opinions of Financial Advisors

 Viacom

   Under a letter agreement dated as of September 2, 1999, Viacom engaged
Morgan Stanley to act as its financial advisor in connection with a possible
combination with CBS. The Viacom Board of Directors selected Morgan Stanley to
act as its financial advisor based on Morgan Stanley's qualifications,
expertise and reputation, as well as its knowledge of the business and affairs
of Viacom. On September 5, 1999, Morgan Stanley delivered an oral opinion to
the Viacom Board of Directors which was subsequently confirmed in writing,
that, as of that date, and based upon and subject to the considerations set
forth in the written opinion, the exchange ratio was fair from a financial
point of view to Viacom.

   The full text of the opinion, which sets forth, among other things, the
assumptions made, procedures followed, matters considered and limitations on
the scope of the review undertaken by Morgan Stanley in rendering its opinion,
is attached as Annex H to this joint proxy statement/prospectus. Morgan
Stanley's written opinion is directed to the Viacom Board of Directors and only
addresses the fairness of the

                                       54
<PAGE>

exchange ratio to Viacom as of the date of the opinion. Morgan Stanley's
written opinion does not address any other aspect of the merger and does not
constitute a recommendation to any Viacom shareholder as to how to vote at the
Viacom special meeting. The summary of the opinion set forth in this joint
proxy statement/prospectus is qualified in its entirety by reference to the
full text of the opinion attached as Annex H hereto. The following is only a
summary of the Morgan Stanley opinion. Viacom shareholders are urged to, and
should, read the opinion carefully and in its entirety.

   In arriving at Morgan Stanley's opinion, Morgan Stanley, among other things:
  . reviewed certain publicly available financial statements and other
    information of Viacom and CBS;
  . reviewed and analyzed certain internal financial statements and other
    financial and operating data concerning Viacom and CBS prepared by the
    respective managements of Viacom and CBS;
  . discussed the past and current operations and financial condition and the
    prospects of Viacom and CBS with senior executives of Viacom and CBS
    including their estimates of the strategic operating benefits of the
    merger and analyzed the pro forma impact of the merger on Viacom's
    financial ratios;
  . reviewed the reported prices and trading activity for the Class B common
    stock of Viacom and the common stock of CBS;
  . compared the financial performance of Viacom and CBS and the prices and
    trading activity of Viacom and CBS with that of certain other comparable
    publicly traded companies and their securities;
  . participated in discussions and negotiations among representatives of
    Viacom, CBS and their respective financial and legal advisors;
  . reviewed the merger agreement and certain related documents; and

  . performed such other analyses and considered such other factors that
    Morgan Stanley deemed appropriate

   Morgan Stanley assumed and relied upon without independent verification the
accuracy and completeness of the information it reviewed for the purposes of
its opinion. With respect to the financial projections, Morgan Stanley assumed
that they had been reasonably prepared on bases reflecting the best currently
available estimates and judgments of the future financial performance of Viacom
and CBS. Morgan Stanley has not made any independent valuation or appraisal of
the assets or liabilities of Viacom and CBS, nor has Morgan Stanley been
furnished with any such appraisals. Morgan Stanley has assumed that the merger
will be consummated in accordance with the terms set forth in the merger
agreement. Morgan Stanley's opinion is necessarily based on economic, market
and other conditions as in effect on, and the information made available to it
as of, the date of its opinion.

   The following is a brief description of all material analyses performed by
Morgan Stanley in connection with its oral opinion and the preparation of its
written opinion letter. These summaries of financial analyses include
information presented in tabular format. In order to understand the financial
analysis used by Morgan Stanley, the tables must be read together with the text
of each summary. The tables alone do not constitute a complete description of
the financial analyses.

   Historical Public Market Trading Value. Morgan Stanley reviewed the stock
price performance of CBS based on an analysis of the historical closing prices
and trading volumes for the one year period beginning September 3, 1998 and
ending September 3, 1999. The year long time period chosen for the analysis of
historical public market trading values is a traditional measurement period for
stock prices chosen to reflect the impact of corporate events which might be
deemed to have an impact on the current share price performance of two
companies which are considering a stock-for-stock merger. The use of
incremental measurement periods within the year long review is designed to
better capture the progression of each company's share price throughout the
year and can better isolate the impact of specific corporate events on share
price performance.

   The following table lists the low, average and high daily closing prices of
shares of CBS common stock for the periods indicated. These prices compare to
$48.89, the price for CBS common stock implied by multiplying the exchange
ratio by the price of Viacom Class B common stock on September 3, 1999.


                                       55
<PAGE>

<TABLE>
<CAPTION>
                                             Historical CBS Common Stock Prices
                                            ------------------------------------
                                                Low       Average       High
                                            ----------- ------------------------
   <S>                                      <C>         <C>          <C>
   Last One Year........................... $     18.00 $     36.90  $     50.44
   Last Nine Months........................       26.75       40.93        50.44
   Last Six Months.........................       35.38       43.98        50.44
   Last Three Months.......................       40.56       45.07        50.44
   Last One Month..........................       44.13       46.71        50.44
   Last Two Weeks..........................       45.88       47.81        50.44
</TABLE>

   Comparative Stock Price Performance. As part of its analysis, Morgan Stanley
reviewed the stock price performance of Viacom Class B common stock and CBS
common stock and compared this performance with the following peer groups:

<TABLE>
<CAPTION>
        Viacom Peer Group                     CBS Peer Group
        -----------------                     --------------
     <S>                            <C>
     The Walt Disney Company        A.H. Belo Corporation
     Fox Entertainment Group, Inc.  Clear Channel Communications, Inc.
     The Seagram Company Ltd.       Hearst-Argyle Television, Inc.
     Time Warner Inc.               Sinclair Broadcast Group, Inc.
                                    Young Broadcasting Inc.
</TABLE>

   Morgan Stanley observed that over the one year period from September 3, 1998
to September 3, 1999, the closing market prices appreciated as set forth below:

<TABLE>
<CAPTION>
                                                           % Total Appreciation
                                                           --------------------
     <S>                                                   <C>
     Viacom...............................................          56%
     CBS..................................................          80
     Viacom Peer Group....................................          23
      (equity market capitalization-weighted index)
     CBS Peer Group.......................................          42
      (equity market capitalization-weighted index)
</TABLE>

   No company used in the stock price performance comparison is identical to
Viacom or CBS. In evaluating the stock price performance comparison, Morgan
Stanley made judgments and assumptions with regard to industry performance,
general business, economic, market and financial conditions and other matters,
many of which are beyond the control of Viacom and CBS. These matters include,
without limitation, the impact of competition on Viacom or CBS and the industry
generally, industry growth and the absence of any material adverse change in
the financial condition and prospects of Viacom or CBS or the industry or in
the financial markets.

   Securities Research Analysts' Future Price Targets. Morgan Stanley reviewed
and analyzed future public market trading price targets for Viacom Class B
common stock and CBS common stock prepared and published by securities research
analysts during the period from May 5, 1999 to August 18, 1999 for Viacom and
May 26, 1999 to August 20, 1999 for CBS. Based upon discussions with senior
executives of Viacom and CBS, these analysts' projections were viewed by Morgan
Stanley as being representative of the future prospects of Viacom and CBS.
These targets reflected each analyst's estimate of the future public market
trading price of Viacom Class B common stock and CBS common stock at the end of
the particular period considered for each estimate. Applying equity discount
rates of 13.4% for Viacom and 12.8% for CBS, which reflect each company's cost
of equity, Morgan Stanley arrived at a range of present values as of September
3, 1999 of these targets as set forth below:

<TABLE>
<CAPTION>
                                                                        Present
                                                                         Value
                                                                         Range
                                                                        -------
                                                                        Low High
                                                                        --- ----
   <S>                                                                  <C> <C>
   Viacom Public Market Trading Price Target........................... $42 $50
   CBS Public Market Trading Price Target..............................  46  53
</TABLE>


                                       56
<PAGE>


   The present value range of the Viacom Public Market Trading Price Targets
compares to a $45.06 price for the Viacom Class B common stock as of September
3, 1999. The present value range of the CBS Public Market Trading Price Targets
compares to a $48.89 price for the CBS common stock implied by multiplying the
exchange ratio by the price of Viacom Class B common stock on September 3,
1999. Morgan Stanley noted that the public market trading price targets
published by the securities research analysts do not reflect current market
trading prices and that these estimates are subject to uncertainties, including
the future financial performance of Viacom and CBS and future financial market
conditions.

   Peer Group Comparison. Morgan Stanley compared financial information of
Viacom and CBS with corresponding financial information for their respective
peer groups.

   Morgan Stanley analyzed, among other things, for each company, the current
aggregate value, i.e., equity value adjusted for capital structure, expressed
as a multiple of earnings before interest, taxes, depreciation and amortization
expense, or EBITDA.

   As of June 30, 1999 and based on estimates of EBITDA taken from selected
securities research analysts, the statistics derived from this analysis are set
forth below:

<TABLE>
<CAPTION>
                                        Viacom Peer
                                           Group               CBS Peer Group
                                      -----------------        ----------------
                               Viacom Median High  Low   CBS   Median High  Low
                               ------ ------ ----  ----  ----  ------ ----  ---
   <S>                         <C>    <C>    <C>   <C>   <C>   <C>    <C>   <C>
   1999 EBITDA Multiple.......  17.1x  15.7x 19.0x 14.4x 22.7x  11.7x 25.7x 8.8x
   2000 EBITDA Multiple.......  14.5   13.3  16.6  12.7  19.6   10.0  22.6  8.1
</TABLE>

The trading multiples for Viacom, CBS and their respective peer groups compare
to the transaction multiples implied by the exchange ratio of 22.7x 1999E CBS
EBITDA and 19.6x 2000E CBS EBITDA.

   No company used in the peer group comparison is identical to Viacom or CBS.
In evaluating the peer group companies, Morgan Stanley made judgments and
assumptions with regard to industry performance, general business, economic,
market and financial conditions and other matters, many of which are beyond the
control of Viacom and CBS. These matters include, without limitation, the
impact of competition on Viacom or CBS and the industry generally, industry
growth and the absence of any material adverse change in the financial
condition and prospects of Viacom or CBS or the industry or in the financial
market in general. Mathematical analysis, such as determining the average or
median, is not in itself a meaningful method of using peer group data.

   Discounted Cash Flow Analysis. Morgan Stanley performed a discounted cash
flow analysis of CBS' business. A discounted cash flow analysis involves an
analysis of the present value of projected cash flows and a terminal value
using discount rates and terminal year free cash flow perpetual growth rates as
indicated below. Morgan Stanley analyzed CBS' business using a forecast for the
period beginning January 1, 1999 and ending December 31, 2003, based on
estimates published by securities research analysts. Based upon discussions
with senior executives of CBS, these analysts' projections were viewed by
Morgan Stanley as being representative of the future prospects of CBS. Morgan
Stanley estimated the CBS common stock discounted cash flow value by using a
discount rate of 10% and a perpetual growth rate applied to 2003 free cash flow
ranging from 4.5% to 5.5%. This analysis yielded a range of per share values
for CBS common stock of approximately $45 to $54. This range of per share
values for CBS common stock compares to $48.89, the price for CBS common stock
implied by multiplying the exchange ratio by the price of Viacom Class B common
stock on September 3, 1999.

   The discount rates used in the discounted cash flow analysis of Viacom and
CBS reflect each company's weighted average cost of capital. The weighted
average cost of capital represents the cost of capital for CBS and Viacom based
on the relative proportion of debt, preferred equity and common equity employed
by each company. The range of perpetual growth rates employed in the CBS
discounted cash flow analysis reflects certain assumption of CBS' cash flow
growth in perpetuity. The terminal EBITDA multiple range used in the Viacom
discounted cash flow analysis was based on a review of the trading multiples
for Viacom and the companies in the Viacom peer group and a comparison of
Viacom's business position relative to its peers.

                                       57
<PAGE>


   Morgan Stanley also performed a discounted cash flow analysis of Viacom's
business. Morgan Stanley analyzed Viacom's business using a forecast for the
period beginning January 1, 1999 and ending December 31, 2003, based on
estimates published by securities research analysts. Based upon discussions
with senior executives of Viacom, these analysts' projections were viewed by
Morgan Stanley as being representative of the future prospects of Viacom.
Morgan Stanley estimated the Viacom Class B common stock discounted cash flow
value by using a discount rate of 10% and terminal multiples of estimated 2003
EBITDA ranging from 13.0x to 15.0x. This analysis yielded a range of per share
values for Viacom Class B common stock of approximately $39 to $45. This range
of per share values for Viacom Class B common stock compares to a $45.06 price
for the Viacom Class B common stock as of September 3, 1999.

   Sum-of-the-Parts Analysis. Morgan Stanley performed a sum-of-the-parts
analysis of CBS' business. A sum-of-the-parts analysis involves a separate
valuation of each of CBS' core businesses. The valuation methodology applied to
each component is set forth below:

<TABLE>
<CAPTION>
       Component                               Valuation Methodology
       ---------                               ---------------------
   <S>                                <C>
   Infinity Broadcasting Corporation  Market Value of CBS' 700 million shares
   Television Assets(a)               13x-15x 2000E EBITDA
   Cable Programming (CMT/TNN)        17x-19x 2000E EBITDA
   King World Productions, Inc.       CBS net purchase price
   Internet Holdings                  Morgan Stanley equity research estimate
</TABLE>
- --------
(a) Includes an analysis of CBS' Television Station group and Television
    Network which were each analyzed as separate components.

This analysis yielded a range of per share values for CBS common stock of
approximately $42-$47. This range of per share values for CBS common stock
compares to $48.89, the price for CBS common stock implied by multiplying the
exchange ratio by the price of Viacom Class B common stock on September 3,
1999. The multiples for the Television Assets and Cable programming used in the
sum-of-the-parts analysis were arrived at after a review of publicly traded
companies with a similar operating profile to the CBS assets. Market position,
growth prospects and profitability were a few of the many factors used in
comparing the CBS assets to the publicly traded comparables.

   Relative Contribution Analysis. Morgan Stanley compared pro forma
contribution of each of Viacom and CBS, based on securities research analyst
estimates, to the resultant combined company assuming completion of the merger.
Morgan Stanley adjusted these statistics to reflect each company's respective
capital structure and then compared them to the pro forma ownership by Viacom
shareholders of the common stock of the combined company, implied by the
exchange ratio, of approximately 46%. Morgan Stanley performed this analysis
with and without Blockbuster as part of Viacom to reflect Viacom's previously
announced intention to split-off Blockbuster to the Viacom shareholders and as
a consequence, deconsolidate Blockbuster for accounting purposes. The results
in terms of both EBITDA and after tax cash flow are set forth below:

<TABLE>
<CAPTION>
                                           Viacom Equity Contribution
                                           --------------------------------
                                               With              Without
                                            Blockbuster        Blockbuster
                                           -------------      -------------
   <S>                                     <C>                <C>
   2000E EBITDA...........................             55.3%              46.9%
   2001E EBITDA...........................             54.5               45.9
   2002E EBITDA...........................             53.1               44.9
   2000E After Tax Cash Flow..............             55.5               44.5
   2001E After Tax Cash Flow..............             56.2               45.4
   2002E After Tax Cash Flow..............             55.2               45.1
</TABLE>

                                       58
<PAGE>


   Historical Exchange Ratio Analysis. Morgan Stanley compared the exchange
ratio of 1.085 to the ratio of the closing market prices of Viacom Class B
common stock and CBS common stock on September 3, 1999. Morgan Stanley also
compared this ratio to selected average historical ratios of the closing market
prices of CBS common stock to Viacom Class B common stock over various periods
ending September 3, 1999. Morgan Stanley then calculated the premiums
represented by the exchange ratio over these ratios. The results of this
analysis are set forth below:

<TABLE>
<CAPTION>
                                                                  % Premium/
                                                    Market      (Discount) to
                                                  Price Ratio Market Price Ratio
                                                  ----------- ------------------
   <S>                                            <C>         <C>
   Current (9/3/99)..............................    1.086x          (0.1)%
   Prior 5 Days..................................    1.109           (2.2)
   Prior 10 Days.................................    1.123           (3.4)
   Prior 20 Days.................................    1.116           (2.8)
   Prior 30 Days.................................    1.097           (1.1)
   Prior 45 Days.................................    1.071            1.3
   Prior 60 Days.................................    1.064            2.0
   Last 6 Months.................................    1.043            4.0
</TABLE>

As of September 3, 1999, the exchange ratio multiplied by the closing price for
the Viacom Class B common stock implied a $48.89 share price for the CBS common
stock or approximately a 5 cent discount to the closing price for CBS common
stock.

   The preparation of a fairness opinion is a complex process and is not
necessarily susceptible to a partial analysis or summary description. In
arriving at its opinion, Morgan Stanley considered the results of all of its
analyses as a whole and did not attribute any particular weight to any
particular analysis or factor considered by it. Furthermore, selecting any
portion of Morgan Stanley's analyses, without considering all analyses, would
create an incomplete view of the process underlying the Morgan Stanley opinion.
In addition, Morgan Stanley may have deemed various assumptions more or less
probable than other assumptions, so that the ranges of valuations resulting
from any particular analysis described above should not be taken to be Morgan
Stanley's view of the actual value of Viacom or CBS.

   In performing its analysis, Morgan Stanley made numerous assumptions with
respect to industry performance, general business and economic conditions and
other matters, many of which are beyond the control of Viacom or CBS. Any
estimates contained in the analyses performed by Morgan Stanley are not
necessarily indicative of actual values, which may be significantly more or
less favorable than suggested by such estimates. The analyses performed were
prepared solely as a part of Morgan Stanley's analysis of the fairness of the
exchange ratio to Viacom in connection with the delivery of Morgan Stanley's
opinion to Viacom's Board of Directors. The analyses do not purport to be
appraisals or to reflect the prices at which Viacom Class B common stock or CBS
common stock might actually trade.

   The exchange ratio was determined through arm's-length negotiations between
Viacom and CBS and was approved by the Viacom Board of Directors. Morgan
Stanley's opinion to the Viacom Board of Directors was one of many factors
taken into consideration by the Viacom Board of Directors in making its
determination to approve the merger. Consequently, the Morgan Stanley analyses
described above should not be viewed as determinative of the opinion of the
Viacom Board of Directors with respect to the value of CBS or of whether the
Viacom Board of Directors would have been willing to agree to different
consideration.

   Morgan Stanley is an internationally recognized investment banking and
advisory firm. Morgan Stanley, as part of its investment banking business, is
continuously engaged in the valuation of businesses and securities in
connection with mergers and acquisitions, negotiated underwritings, competitive
biddings, secondary distributions of listed and unlisted securities, private
placements and valuations for corporate and other purposes. In the ordinary
course of Morgan Stanley's trading, brokerage and financing activities, Morgan
Stanley or its affiliates may at any time hold long or short positions, may
trade, make a market or otherwise effect transactions, for its own account or
for the accounts of customers, in the securities of Viacom or CBS.

                                       59
<PAGE>


   In accordance with an engagement letter dated September 2, 1999, Viacom has
agreed to pay Morgan Stanley a $10 million fee for advisory services rendered
and to reimburse Morgan Stanley for reasonable expenses incurred. Of this $10
million fee, $7.5 million is contingent upon the closing of the merger. Viacom
has also agreed to indemnify Morgan Stanley and its affiliates, their
respective directors, officers, agents and employees and each person, if any,
controlling Morgan Stanley or any of its affiliates, against liabilities and
expenses, including certain liabilities under the federal securities laws,
arising out of Morgan Stanley's engagement. In the past, Morgan Stanley and its
affiliates have provided financial advisory and financing services for Viacom
and CBS and have received fees for the rendering of these services.

 CBS

   CBS retained Evercore to act as financial advisor to CBS and to render a
fairness opinion, from a financial point of view, in connection with the
merger. On September 5, 1999, Evercore delivered its oral opinion to the CBS
Board of Directors which was subsequently confirmed in a written opinion, that,
as of that date, the exchange ratio was fair, from a financial point of view,
to the shareholders of CBS.

   The full text of the written opinion of Evercore is set forth as Annex I to
this joint proxy statement/prospectus and describes the assumptions made,
general procedures followed, matters considered and limits on the review
undertaken. Evercore's opinion is directed only to whether the exchange ratio
is fair, from a financial point of view, to the holders of CBS common stock and
does not constitute a recommendation of the merger over other courses of action
that may be available to CBS or constitute a recommendation to any CBS
shareholder as to how that shareholder should vote with respect to the merger.
The summary of the opinion of Evercore set forth in this joint proxy
statement/prospectus is qualified in its entirety by reference to the full text
of such opinion, attached as Annex I. Shareholders of CBS are urged to read the
opinion carefully and in its entirety.

   In connection with rendering its opinion, Evercore has, among other things:
  . analyzed various publicly available financial statements and other
    information relating to CBS and Viacom;
  . analyzed various internal financial statements and other non-public
    financial and operating data concerning CBS, which were prepared by and
    furnished to Evercore or reviewed for Evercore by the management of CBS,
    and concerning Viacom, which were prepared by and furnished to Evercore
    or reviewed for Evercore by the management of Viacom;
  . analyzed various financial projections for 1999 concerning CBS, which
    were prepared by the management of CBS, and concerning Viacom, which were
    prepared by the management of Viacom;
  . discussed the past and current operations and financial condition and the
    prospects of CBS with the management of CBS;
  . discussed the past and current operations and financial condition and the
    prospects of Viacom with the management of Viacom;
  . reviewed the reported prices and trading activity of the CBS common stock
    and Viacom Class B common stock;
  . compared the market valuation and financial performance of CBS and Viacom
    with that of several other comparable publicly traded companies;
  . reviewed the financial terms to the extent available of certain
    comparable acquisition transactions;
  . participated in discussions and negotiations among representatives of
    CBS, Viacom, and their respective financial and legal advisers;
  . reviewed the merger agreement and the related exhibits and schedules;
  . reviewed various information concerning cost savings and combination
    benefits expected to result from the merger that was furnished to
    Evercore or reviewed for Evercore by the managements of CBS and Viacom;
    and
  . performed other analyses and examinations and considered other factors as
    Evercore in its sole judgment deemed appropriate.

                                       60
<PAGE>


   For purposes of its analysis and opinion, Evercore assumed and relied,
without independent verification, upon the accuracy and completeness of the
information reviewed by Evercore or reviewed for Evercore. With respect to the
financial projections of CBS and Viacom for 1999 which were furnished to
Evercore by the managements of CBS and Viacom, and certain analyses concerning
the potential cost savings and combination benefits expected to result from the
merger which were reviewed for Evercore by the management of CBS, Evercore
assumed that they were reasonably prepared on bases reflecting the best
currently available estimates and good faith judgments of the future
competitive, operating and regulatory environments and related financial
performance of CBS and Viacom, respectively. Evercore did not make nor assume
any responsibility for making any independent valuation or appraisal of the
assets or liabilities of CBS or Viacom, nor was Evercore furnished with any
such appraisals. Evercore's opinion was necessarily based on economic, market
and other conditions as in effect on, and the information and agreements made
available to Evercore as of the date of its opinion. Evercore assumed, with the
approval of CBS, that the merger would qualify as a tax-free reorganization
within the meaning of Section 368 of the Internal Revenue Code of 1986.
Evercore's opinion did not address CBS' underlying business decision to effect
the merger nor constitute a recommendation to any CBS shareholder as to how
that shareholder should vote with respect to the merger. Furthermore, Evercore
expressed no opinion as to the price or range of prices at which the shares of
Viacom Class B common stock would trade at any future time.

   For purposes of its analyses, Evercore primarily relied upon publicly
available Wall Street research estimates for each company, and subsequently
compared those estimates to internal budgets for 1999 for each company to
confirm the reasonableness of the analysts' expectations.

   For purposes of rendering its opinion, Evercore assumed, in all respects
material to its analysis, that the representations and warranties of each party
contained in the merger agreement were true and correct, that each party would
perform all the covenants and agreements required under the merger agreement,
and that all conditions to the consummation of the merger would be satisfied
without being waived.

   In connection with a presentation to the CBS Board on September 5, 1999,
Evercore advised CBS' Board that, in evaluating the exchange ratio, Evercore
had performed a variety of financial analyses with respect to CBS and Viacom,
each of which material analysis is summarized below:

   Historical Exchange Ratio Analysis. Evercore reviewed the daily closing
prices of CBS common stock and Viacom Class B common stock to determine the
implied exchange ratio based upon the relative prices of CBS common stock and
Viacom Class B common stock for each considered time period. Evercore did so in
order to analyze whether the agreed upon exchange ratio was consistent with the
implied exchange ratio during these periods. Evercore analyzed the implied
exchange ratio between CBS common stock and Viacom Class B common stock for
various time periods between January 2, 1998 and September 3, 1999. Evercore
noted that the agreed to exchange ratio of 1.085 was within the range of
historical implied exchange ratios in the periods examined. The historical
implied exchange ratios for the periods are shown below:

<TABLE>
<CAPTION>
                                                      CBS     Viacom    Implied
                                                     Share    Class B   Exchange
                                                     Price  Share Price  Ratio
                                                     ------ ----------- --------
<S>                                                  <C>    <C>         <C>
September 3, 1999................................... $48.94   $45.06     1.0860
10-Day Average......................................  47.81    42.59     1.1225
20-Day Average......................................  46.71    41.86     1.1159
30-Day Average......................................  46.15    42.10     1.0964
45-Day Average......................................  45.86    42.91     1.0688
60-Day Average......................................  45.07    42.43     1.0621
90-Day Average......................................  44.63    41.73     1.0695
1999 Year-to-Date Avg. (through 9/3/99).............  41.57    42.11     0.9871
1998 Full-Year Average..............................  30.33    28.64     1.0591
Merger Exchange Ratio...............................                     1.0850
</TABLE>

                                       61
<PAGE>


   Contribution Analysis. Evercore analyzed the relative contributions of CBS
and Viacom to the pro forma combined company with respect to revenues,
consolidated EBITDA, EBITDA less minority interest, adjusted to exclude
minority interests in the EBITDA of Infinity for CBS and in Blockbuster for
Viacom, equity market value, and enterprise value for the projected fiscal
years ending in 1999 and 2000. Evercore did so in order to compare CBS'
relative contribution to the combined company on these measurements to CBS' pro
forma ownership of the combined company based on the exchange ratio. Evercore
also reviewed the pro forma ownership of the combined company, taking into
account each company's outstanding options and warrants on common stock treated
under the treasury stock method. Evercore noted that the pro forma ownership
percentage based on the exchange ratio was consistent with CBS' contribution of
the measurements set forth below.

<TABLE>
<CAPTION>
                                                      FY 1999E     FY 2000E
                                                     ------------ ------------
                                                     CBS   Viacom CBS   Viacom
                                                     ----  ------ ----  ------
   <S>                                               <C>   <C>    <C>   <C>
   Contribution Percentage:
     Revenue........................................ 39.9%  60.1% 39.5%  60.5%
     Consolidated EBITDA............................ 52.0%  48.0% 52.2%  47.8%
     EBITDA Less Min. Int. (a)...................... 47.2%  52.8% 47.6%  52.4%
     Equity Market Value............................ 54.7%  45.3%
     Enterprise Value............................... 53.0%  47.0%
   Pro Forma Economic Ownership Based on Exchange
    Ratio:
     CBS............................................ 54.6%
     Viacom......................................... 45.4%
</TABLE>
- --------
(a) Excludes 35.8% minority interest in Infinity for CBS and 17.7% minority
    interest in Blockbuster for Viacom.

   Pro Forma Merger Analysis. Primarily relying on Wall Street research
estimates, Evercore analyzed the potential pro forma effects of the merger on
CBS' projected free cash flow per share based on various assumptions regarding
the merger. Evercore performed such analysis due to the fact that several Wall
Street research analysts use projected free cash flow per share as one, among
other, valuation measurements. For the purposes of this analysis, free cash
flow was defined as EBITDA less interest expense less cash taxes less capital
expenditures. This analysis indicated that the merger would initially be
dilutive to CBS' free cash flow per share. The actual results achieved by the
combined company may vary from projected results and the variations may be
material.

   Review of Selected Merger-of-Equals Transactions. Evercore reviewed the
financial terms, to the extent publicly available, of nine selected merger-of-
equals transactions, in order to compare the premiums implied in these
transactions to the implied premium in the merger. Evercore reviewed the
premiums implied in the selected merger-of-equals transactions relative to
market value contributions, assuming a constant market capitalization based on
closing stock prices prior to the announcement of such transactions.

   Evercore noted that, if the merger had closed on September 3, 1999,
utilizing the Viacom closing stock price on September 3, 1999, and assuming the
exchange ratio of 1.085, CBS shareholders would have received Viacom Class B
common stock having a market value representing a discount of 0.1% to the CBS
common stock September 3, 1999 closing price. Evercore compared this implied
discount to the implied premiums/discounts for similar periods prior to public
announcement in the following comparable merger-of-equals transactions:

  . Honeywell Inc./AlliedSignal Inc.;

  . GTE Corporation/Bell Atlantic Corporation;

  . Wells Fargo & Company/Norwest Corporation;

  . Monsanto Company/American Home Products Corporation;

  . BankAmerica Corporation/NationsBank Corp.;

                                       62
<PAGE>

  . First Chicago NBD Corporation/Banc One Corporation;

  . Citicorp/Travelers Group, Inc.;

  . HFS Incorporated/CUC International Inc.; and

  . NYNEX Corporation/Bell Atlantic Corporation.

   In each of the above transactions, the shareholders of the first-named
company were to receive shares of the second-named company. Evercore considered
these merger-of-equals transactions to be reasonably similar to the merger, but
none of these precedents is identical to the merger.

   The following table presents the premiums or discounts contemplated in the
merger and implied in these other transactions, from the perspective of the
shareholders of the first-named company, compared with the previous trading day
closing price per share:

<TABLE>
<CAPTION>
                                            Premium to Prior Day Closing Price
                                            ----------------------------------
   <S>                                      <C>
   CBS/Viacom..............................                -0.1%
   Precedent "Merger-of-Equals"
    Transactions:
     Average...............................                 3.5%
     Median................................                 5.5%
     Low...................................                -5.8%
     High..................................                 9.3%
</TABLE>

   Evercore noted that the discount of 0.1% for the CBS/Viacom merger was
within the range of 5.8% -- 9.3% discount/premium for the other transactions
analyzed.

   Selected Comparable Company Analysis. Evercore compared selected financial,
market and operating information of CBS with corresponding data of other
selected publicly traded companies with similar operations to those of CBS, in
order to compare CBS' public market valuation to public companies with similar
operations. Evercore compared the adjusted enterprise value to adjusted EBITDA
multiples of the consolidated CBS Corporation to a selected group of publicly
traded radio broadcasting and outdoor advertising companies. Adjusted
enterprise value for a given company was defined as total enterprise value,
which is equity market value plus total debt and preferred stock, less cash and
cash equivalents, less the value of unconsolidated stakes in other companies,
less the value of segments within the company that trade at multiples that are
significantly different from the rest of the company, and plus the value of any
minority stakes in consolidated businesses. Adjusted EBITDA for a given company
was defined as EBITDA less the EBITDA contributed by segments within the
company that trade at multiples that are significantly different from the rest
of the company. This selected group of publicly traded radio broadcasting and
outdoor advertising companies was comprised of:

  . AM/FM Inc.;

  . Citadel Communications Corporation;

  . Clear Channel Communications, Inc.;

  . Cox Radio, Inc.;

  . Cumulus Media, Inc.;

  . Emmis Communications Corporation;

  . Entercom Communications Corp.;

  . Hispanic Broadcasting Corporation;

  . Infinity Broadcasting Corporation;

  . Radio One, Inc.; and

  . Saga Communications, Inc.

   Evercore selected these radio broadcasting and outdoor advertising companies
because Evercore considered them to have operations similar to the operations
of CBS in this business segment. All multiples were calculated based on closing
prices as of September 3, 1999. For the comparable companies, EBITDA

                                       63
<PAGE>

projections were based on publicly available Wall Street research estimates.
Evercore noted that the closing price of CBS common stock on September 3, 1999
of $48.94 represented a multiple of EBITDA that was within the range found for
the CBS-comparable companies set forth above. To illustrate, Evercore
highlighted the following multiples of adjusted enterprise value to adjusted
1999E and 2000E EBITDA:

<TABLE>
<CAPTION>
                                                          Adj. Enterprise
                                                       Value to Adj. EBITDA
                                                       -----------------------
                                                        FY 1999E     FY 2000E
                                                       ----------   ----------
<S>                                                    <C>          <C>
CBS Consolidated......................................       20.8x        18.2x
Radio & Outdoor Advertising(a):
  Average.............................................       22.5x        19.5x
  Low.................................................       13.4x        12.0x
  High................................................       28.7x        24.2x
</TABLE>
- --------
(a) The analysis of Radio & Outdoor comparables excludes Hispanic Broadcasting
    because its multiples were not in line with other comparables.

   Evercore compared the adjusted enterprise value to adjusted EBITDA multiples
of CBS, excluding its majority-owned stake in Infinity, to a selected group of
publicly traded television broadcasting companies. Evercore looked at CBS
excluding Infinity due to the fact that many Wall Street research analysts also
analyze CBS in this manner in order to isolate the implied valuation of the
non-radio/outdoor advertising assets. In doing so, Evercore excluded the
financial impact of Infinity on the EBITDA of CBS. Evercore also reduced the
enterprise value of CBS used in the calculation by an amount equal to the
market value of Infinity common stock held by CBS plus Infinity's net debt
balance.

   The group of publicly traded television broadcast companies selected for
this comparative analysis was comprised of:

  . A.H. Belo Corporation;

  . Granite Broadcasting Corporation;

  . Hearst-Argyle Television, Inc.;

  . Paxson Communications Corporation;

  . Sinclair Broadcasting Group, Inc.;

  . United Television, Inc.; and

  . Young Broadcasting, Inc.

   Evercore selected these television broadcasting companies because Evercore
considered them to have operations similar to the operations of CBS, excluding
Infinity, in this business segment. All multiples were calculated based on
closing prices as of September 3, 1999. For the comparable companies, EBITDA
projections were based on publicly available Wall Street research estimates.
Evercore noted that the closing price of CBS common stock on September 3, 1999
of $48.94 represented a multiple of EBITDA that was within the range found for
the CBS-comparable companies set forth above. Evercore highlighted the
following multiples of adjusted enterprise value to adjusted 1999E and 2000E
EBITDA:

<TABLE>
<CAPTION>
                                                          Adj. Enterprise
                                                       Value to Adj. EBITDA
                                                       -----------------------
                                                        FY 1999E     FY 2000E
                                                       ----------   ----------
<S>                                                    <C>          <C>
CBS Excluding Infinity(a) ............................       19.2x        16.8x
Television Broadcasting(b):
  Average.............................................       12.0x        10.9x
  Low.................................................        9.0x         7.9x
  High................................................       14.2x        12.9x
</TABLE>
- --------
(a) Also excludes TV network and Internet assets.
(b) The analysis of Television Broadcasting comparables excludes Paxson
    Communications because its multiples were not in line with other
    comparables.

                                       64
<PAGE>


   Evercore also compared financial, market and operating information of Viacom
with corresponding data of other selected publicly traded companies with
similar operations. Evercore compared the adjusted enterprise value to adjusted
EBITDA multiples of Viacom to a selected group of publicly traded entertainment
companies. The selected group of publicly traded entertainment companies was
comprised of:

  . The Walt Disney Company;

  . The News Corporation Limited;

  . Time Warner Inc.;

  . The Seagram Company Ltd.;

  . Fox Entertainment Group, Inc.; and

  . USA Networks, Inc.

   Evercore selected these entertainment companies because Evercore considered
them to have operations similar to the operations of Viacom. All multiples were
calculated based on closing prices as of September 3, 1999. For the comparable
companies, EBITDA projections were based on publicly available Wall Street
research estimates. Evercore noted that the closing price of Viacom Class B
common stock on September 3, 1999 of $45.06 represented a multiple of Adjusted
EBITDA that was within the range found for the Viacom-comparable companies set
forth above. To illustrate, Evercore highlighted the following multiples of
adjusted enterprise value to adjusted 1999E and 2000E EBITDA:

<TABLE>
<CAPTION>
                                                          Adj. Enterprise
                                                        Value to Adj. EBITDA
                                                       -----------------------
                                                        FY 1999E     FY 2000E
                                                       ----------   ----------
<S>                                                    <C>          <C>
Viacom(a).............................................       20.2x        17.5x
Entertainment Comparable Firms(b):
  Average.............................................       16.3x        13.8x
  Low.................................................       12.2x         9.8x
  High................................................       20.8x        17.8x
</TABLE>
- --------
(a) Excludes Blockbuster.

(b) The analysis of Entertainment comparables excludes News Corp. due to its
    relatively high concentration on publishing operations.

   No company used in the comparable company analyses summarized above is
identical to CBS or Viacom. Accordingly, any analysis of the fairness of the
consideration to be received by the holders of CBS common stock in the merger
involves complex considerations and judgments concerning differences in the
potential financial and operating characteristics of the comparable companies
and other factors in relation to the trading values of the comparable
companies.

   Selected Comparable Transaction Analysis. Evercore reviewed the implied
transaction multiples paid in selected comparable merger and acquisition
transactions and compared these multiples to the multiples implied by the
consideration paid to CBS shareholders in the merger. Evercore did so in order
to compare the multiples paid in those transactions to the multiple implied in
the merger. Evercore noted that, if the merger had closed on September 3, 1999,
utilizing the closing price of Viacom Class B common stock on September 3, 1999
of $45.06, and assuming the exchange ratio of 1.085, CBS shareholders would
have received Viacom Class B common stock having a market value equal to $48.89
per each share of CBS common stock owned. Evercore analyzed the adjusted
enterprise value of CBS, derived from this implied price per share, as a
multiple of adjusted EBITDA and compared this multiple to multiples of EBITDA
paid in selected mergers and

                                       65
<PAGE>

acquisitions of radio broadcasting and outdoor advertising companies. The
following selection of mergers and acquisitions of radio broadcasting and
outdoor advertising companies was used for purposes of this analysis:

  . Chancellor Media Outdoor Corporation/Lamar Advertising Co.

  . Outdoor Systems, Inc./Infinity Broadcasting Corporation

  . Jacor Communications, Inc./Clear Channel Communications, Inc.

  . Capstar Broadcasting Corporation/Chancellor Media Corp.

  . Universal Outdoor Holdings, Inc./Clear Channel Communications, Inc.

  . American Radio Systems Corporation/CBS Corporation

  . SFX Broadcasting, Inc./Capstar Broadcasting Corporation

  . Viacom Radio/Evergreen Media Corp.

  . Chancellor Media Corp./Evergreen Media Corp.

  . Infinity Broadcasting Corporation/Westinghouse Electric Corporation

   Evercore also performed this analysis for the following selection of mergers
and acquisitions involving television broadcasting companies:

  . Gaylord Entertainment/CBS Corporation

  . Kelly Broadcasting/Hearst-Argyle Television, Inc.

  . Pulitzer Publishing Company (TV & Radio)/Hearst-Argyle Television, Inc.

  . Sullivan Broadcasting/Sinclair Broadcast Group, Inc.

  . LIN Television Corporation/Hicks Muse Tate & Furst

  . Heritage Media Corporation/The News Corporation Limited

  . Heritage Media Corporation/Sinclair Broadcast Group, Inc.

  . A.H. Belo Corporation/Scripps Howard

  . Argyle TV/Hearst-Argyle Television, Inc.

  . Providence Journal Company/A.H. Belo Corporation

  . First Media Television, L.P./Meredith Corporation

  . New World Communications Group, Inc./The News Corporation Limited

  . Renaissance Communications Corporation/Tribune Company

  . Multimedia, Inc./Gannett Co., Inc.

   Evercore selected these transactions because they involved companies in
business segments in which CBS has operations. Evercore noted that the multiple
implied by the merger as of September 3, 1999 is within the range of multiples
paid in comparable transactions, and, therefore, that these analyses of
multiples supported a fairness determination concerning the merger.

                                       66
<PAGE>

<TABLE>
<CAPTION>
                                                     Transaction Value to EBITDA
                                                     ---------------------------
<S>                                                  <C>
Merger Offer for CBS
  CBS Consolidated..................................            20.8x
  CBS Excluding Infinity............................            19.2x
Radio & Outdoor Transactions:
  Average...........................................            17.7x
  Low...............................................            14.2x
  High..............................................            21.0x
Television Broadcasting Transactions:
  Average...........................................            14.4x
  Low...............................................             9.8x
  High..............................................            23.3x
</TABLE>

   Additionally, Evercore analyzed the adjusted enterprise value of Viacom as a
multiple of adjusted EBITDA and compared this multiple to multiples of EBITDA
paid in a selection of mergers and acquisitions of entertainment companies. The
following selection of mergers and acquisitions of entertainment companies was
used for purposes of this analysis:

  . PolyGram N.V./The Seagram Company Ltd.

  . Metro-Goldwyn-Mayer Inc./Management

  . Turner Broadcasting System, Inc./Time Warner Inc.

  . CBS, Inc./Westinghouse Electric Corp.

  . Capital Cities/ABC, Inc./The Walt Disney Company

  . MCA, Inc./The Seagram Company Ltd.

  . Blockbuster Entertainment Corporation/Viacom Inc.

  . Paramount Communications Inc./Viacom Inc.

   Evercore selected these transactions because they involved companies in
business segments in which Viacom has operations. Evercore noted that the
multiple implied by Viacom's closing price on September 3, 1999 is within the
range of multiples paid in comparable transactions.

<TABLE>
<CAPTION>
                                                                     Transaction
                                                                      Value to
                                                                       EBITDA
                                                                     -----------
<S>                                                                  <C>
Viacom (a)..........................................................    20.2x
Entertainment Transactions (b):
  Average...........................................................    15.9x
  Low...............................................................    12.3x
  High..............................................................    21.0x
</TABLE>
- --------
(a) Excludes Blockbuster.
(b) The analysis of Entertainment transactions excludes Blockbuster
    Entertainment Corporation/Viacom Inc. transaction due to the retail nature
    of Blockbuster's business.

   No transaction used in the comparable transaction analyses summarized above
is identical to the merger. Accordingly, any analysis of the fairness of the
consideration to be received by the holders of CBS common stock in the merger
involves complex considerations and judgments concerning differences in the
potential financial and operating characteristics of the comparable
transactions and other factors in relation to the acquisition values of the
comparable companies.

                                       67
<PAGE>


   Discounted Cash Flow Analysis. Evercore estimated the present value of the
future stand-alone, unlevered free cash flows that could be produced by CBS.
Such analysis is performed to determine the value that a current share might be
worth based on various assumptions as set forth below. The net present value
ranges were estimated by applying one-year forward terminal value multiples
ranging from 16.0x to 18.0x 2004E EBITDA and discount rates ranging from 11.0%
to 14.0%. Terminal value multiples were determined based on both current public
and private market-based valuations, as well as Wall Street research analyst
estimates. The discount rates were determined based on the weighted average
cost of capital formulation, which utilizes the cost of both debt and equity
for a company/investment. This analysis indicated a value per share of CBS
common stock ranging from approximately $42.03 to $52.60, as compared to the
per share price of $48.89 for CBS common stock that was implied by the exchange
ratio as of September 3, 1999.

   Evercore also performed a discounted cash flow analysis for Viacom. Evercore
estimated the present value of the future stand-alone, unlevered free cash
flows that could be produced by Viacom. The net present value ranges were
estimated by applying one-year forward terminal value multiples ranging from
16.0x to 18.0x 2004E EBITDA and discount rates ranging from 11.0% to 14.0%.
Terminal value multiples were determined based on both current public and
private market-based valuations, as well as Wall Street research analyst
estimates. The discount rates were determined based on the weighted average
cost of capital formulation, which utilizes the cost of both debt and equity
for a company. This analysis indicated a value per share of Viacom Class B
common stock ranging from approximately $42.80 to $53.18, as compared to the
per share price for Viacom Class B common stock of $45.06 on September 3, 1999.

   Sum-of-the-Parts Analysis. Evercore estimated the value of CBS by
calculating the implied value of its different components at different
multiples and then adding these values to arrive at a value for the
consolidated entity. Evercore performed such analysis as it allows for the
different business segments of a company to be valued consistently with its
respective comparable peer group. This methodology is also commonly employed by
Wall Street research analysts as one, among other, valuation measurements. For
this sum-of-the-parts valuation, Evercore valued CBS' syndication business at a
range of 10.0x to 12.0x 2000E EBITDA, CBS' television segment at a fixed amount
for the network and at a range of 13.0x to 15.0x 2000E EBITDA for its
television stations, and CBS' cable network division at a range of 16.0x to
18.0x 2000E EBITDA. The remaining businesses of CBS, consisting of corporate
overhead, Internet assets, and CBS' stake in Infinity, were valued at fixed
amounts. Evercore based its valuation ranges of these segments on both current
public and private market-based valuations, as well as Wall Street analyst
estimates. The sum-of-the parts valuation yielded a CBS common stock valuation
range of $45.26 to $48.39 per share, as compared to the per share price of
$48.89 for CBS common stock that was implied by the exchange ratio as of
September 3, 1999.

   Evercore also estimated the value of Viacom with a similar sum-of-the-parts
analysis. Evercore used a range of values for each of Viacom's business
segments and assets. These values were based on multiples of EBITDA,
subscribers or revenues, or on other metrics such as market value or historical
cost. The sum-of-the parts valuation yielded a Viacom Class B common stock
valuation range of $44.60 to $51.83 per share, as compared to the per share
price for Viacom Class B common stock of $45.06 on September 3, 1999.

   The foregoing summary does not purport to be a complete description of the
analyses performed by Evercore or of its presentation to CBS' Board. The
preparation of financial analyses and a fairness opinion is not susceptible to
partial analysis or summary description. Evercore believes that its analyses
and the summary set forth above must be considered as a whole and that
selecting portions of its analyses and the factors considered by it, without
considering all analyses and factors, could create an incomplete view of the
processes underlying the analysis conducted by Evercore and its opinion.
Evercore has not indicated that any of the analyses which it performed had a
greater significance than any other.

   In determining the appropriate analyses to conduct and when performing those
analyses, Evercore made numerous assumptions with respect to industry
performance, general business, financial, market and economic conditions and
other matters, many of which are beyond the control of CBS or Viacom. The
analyses which Evercore performed are not necessarily indicative of actual
values or actual future results, which may be significantly more or less
favorable than suggested by the analyses. The analyses were prepared solely as
part

                                       68
<PAGE>

of Evercore's analysis as to whether the exchange ratio is fair, from a
financial point of view, to the holders of CBS common stock. The analyses are
not appraisals and the estimates of values of companies do not reflect the
prices at which a company might actually be sold or the prices at which any
securities may trade at the present time or at any time in the future.

   Evercore is a nationally recognized investment banking firm that is
regularly engaged in the valuation of businesses and their securities in
connection with mergers and acquisitions. CBS retained Evercore based on these
qualifications as well as its familiarity with CBS and Viacom. Evercore has
previously provided various investment banking and financial advisory services
to CBS, for which Evercore received customary fees for the rendering of these
services.

   Pursuant to the terms of an engagement letter with Evercore, CBS agreed to
pay Evercore a fee equal to $2,500,000 following delivery of Evercore's
fairness opinion and $7,500,000 upon the completion of the merger. Whether or
not the merger is completed, CBS has agreed under the engagement letter to
reimburse Evercore for all its reasonable out-of-pocket expenses, including the
reasonable fees and disbursements of its counsel, incurred in connection with
its engagement by CBS, and to indemnify Evercore against liabilities and
expenses in connection with its engagement.

Directors, Management and Corporate Governance of the Combined Company

   Pursuant to the merger agreement, the proposed new Restated Certificate of
Incorporation and By-laws, and the stockholder agreement between National
Amusements and CBS, Viacom, CBS and National Amusements have agreed to
corporate governance arrangements which generally cannot be changed for three
years following the merger without approval of at least 14 directors and, in
some cases, approval of the combined company's shareholders. These corporate
governance arrangements are described below.

   Chairman and Chief Executive Officer. Mr. Redstone, the current Chairman and
CEO of Viacom, will remain the Chairman and CEO of the combined company
following the merger. Mr. Redstone, as CEO, will be responsible, in
consultation with the President and COO, for the combined company's corporate
policy and strategy and will chair all Board and shareholder meetings at which
he is present. If Mr. Redstone ceases to be the CEO at any time during the
first three years following the merger, or if Mr. Redstone is no longer the CEO
at the effective time of the merger, Mr. Karmazin will be the CEO and will
retain the COO functions described below.

   President and Chief Operating Officer. Mr. Karmazin, the current President
and CEO of CBS, will be the President and COO of the combined company following
the merger. The COO will report directly to the CEO and must consult with the
CEO on all major decisions affecting the combined company. Mr. Karmazin, as
COO, will be responsible for supervising, coordinating and managing the
combined company's business, operations, activities, operating expenses,
capital allocation, officers other than the CEO, and employees, including
hiring, terminating, changing positions and allocating responsibilities of
those officers and employees, other than hiring of the Chief Financial Officer,
Controller and General Counsel, which can only be done by majority vote of the
combined company's board. All officers, other than the CEO, and employees will
report directly or indirectly to the COO. During the three-year period
following the merger, Mr. Karmazin cannot be terminated or demoted, whether he
is COO or CEO, and none of the COO functions may be changed, unless approved by
a vote of at least 14 directors.

   Board of Directors. At the effective time of the merger, the Board of
Directors of Viacom will be expanded to 18 directors. The Board size may not be
changed during the three-year period following the merger without the approval
of at least 14 directors. Eight of the 18 directors initially will be
individuals who were directors of CBS on September 6, 1999, or any independent
directors of CBS subsequently appointed to the CBS Board of Directors, as
selected by the CBS Board of Directors prior to the effective time of the
merger. The Viacom Board, subject to the fiduciary duties of its members, and
National Amusements, pursuant to its voting agreement with CBS, are required to
take all action necessary to fill any vacancy in any of the eight CBS
directorships with an independent director designated by a majority of the
remaining CBS directors.

                                       69
<PAGE>

No CBS director serving on the Viacom Board may be removed from office during
the three-year period following the merger unless the removal is for cause and
is approved by at least 14 directors. The remaining ten directors will be the
Viacom directors immediately prior to the effective time of the merger. Of
these ten directors, two must either be the current independent directors of
Viacom or other disinterested, independent persons that are chief executive
officers, chief operating officers, chief financial officers or former chief
executive officers of a Fortune 500 company or a non-U.S. public company of
comparable size. Subject to the preceding sentence, National Amusements, which
is controlled by Mr. Redstone, through its majority ownership of Viacom Class A
common stock, has the ability to cause the Viacom nominees to be elected to
serve as the ten remaining directors.

   Actions of the Board of Directors. All actions to be taken by the Board of
Directors of Viacom following the merger will require the approval of at least
14 directors, except for the actions specified below, which will require
approval only by a majority of the Board:

 Acquisitions, Divestitures, Joint Ventures, Guarantees

  . Any acquisition, equity investment or joint venture by Viacom or any of
    its subsidiaries for more than $25 million.

  . Any divestiture or other sale of assets not in the ordinary course by
    Viacom or any of its subsidiaries for more than $25 million.

  . Any real estate purchase, sale or lease by Viacom or any of its
    subsidiaries for more than $25 million.

  . Any guarantee by Viacom or any of its subsidiaries of an obligation of a
    third party where the obligation guaranteed is more than $25 million.

  . Notwithstanding any of the above, any acquisition or divestiture by
    Viacom or any of its subsidiaries of:

    -- internet or internet related businesses for more that $25 million
       but less than $100 million, with the value thereof represented by
       multi-year commitments for advertising, promotion and content
       licensing, is excluded, so long as the aggregate of these
       acquisitions or divestitures, in each case, does not exceed $550
       million and

    -- radio or outdoor advertising businesses for more than $25 million
       but less than $100 million is excluded, so long as the aggregate of
       these acquisitions or divestitures, in each case, does not exceed
       $300 million;

   provided that:

    -- any divestiture of shares of a publicly traded internet or internet
       related business with a value of up to $75 million is excluded and
       will not be included in the calculation of any of the threshold
       amounts set forth above,

    -- Board approval may be secured, but is not required, for any
       transaction of more than $25 million but less than $100 million
       where the regular meeting schedule of the Board so permits and is
       not otherwise required,

    -- the Board will be provided with information about and a status
       report on the transactions completed without Board approval and

    -- this limit of authority will be reviewed 12 months following the
       merger and may be amended only with the approval of 14 directors.

  . Any contract of Viacom or any of its subsidiaries not in the ordinary
    course with a value in excess of $25 million.

  . Notwithstanding any of the above, any of the acquisitions, divestitures
    or other transactions described above that are approved by a majority of
    the Board will not be included in the calculation of any of the threshold
    amounts for these transactions. For example, if a majority of the Board
    elects to approve the

                                       70
<PAGE>


   acquisition of an internet business for $100 million, the $100 million
   would not count against the $550 million aggregate threshold above which
   this type of transaction would require majority Board approval.

 Employee Matters

  . Employee benefit plans of Viacom or any of its subsidiaries: (1) creating
    a new plan, (2) suspending or terminating an existing plan or (3)
    adopting any amendment that materially increases costs to Viacom or any
    subsidiary.

  . Entering into any modifications or amendments to the employment
    agreements with the CEO or the COO.

 General

  . The Annual Report on Form 10-K.

  . The proxy statement and notice of meeting, including annual or special
    meeting date, location, record date for voting.

  . Any issuance of Viacom stock, or options, warrants or other similar
    rights, including stock appreciation rights or debt or other securities
    convertible into or exchangeable for Viacom stock.

  . Any issuance of debt unless the debt is short term and is within the
    spending limits of the annual operating budget or is replacing existing
    debt.

  . Annual capital expenditure and annual operating budgets and individual
    capital expenditures in excess of $25 million for Viacom or any of its
    subsidiaries.

  . Viacom or any of its subsidiaries pays a dividend or repurchases its
    stock from a third party.

  . Review and approval of any action or transaction where Board action is
    required by law, other than Section 141(a) of the Delaware General
    Corporation Law, or by the terms of the transaction, in all cases other
    than as specifically set forth in Viacom's proposed new Restated
    Certificate of Incorporation.

  . Review and approval of Board minutes.

  . Subject to other provisions of Viacom's proposed new Restated Certificate
    of Incorporation, determining Board administration, including number of
    directors, meeting schedule, nominees, committees, director compensation,
    director and officer insurance authorization, internal investigations and
    retention of advisors in connection with the foregoing, and decisions
    regarding indemnification of individuals.

  . Subject to other provisions of Viacom's proposed new Restated Certificate
    of Incorporation, amendments to the proposed new Restated Certificate of
    Incorporation and By-laws of Viacom.

  . Commencement and settlement of major litigation.

  . Selection of independent auditors.

  . All matters on which Viacom's Board of Directors has historically taken
    action other than:

    -- matters relating to the subject matters addressed in this list and
       not requiring the approval of the Board of Directors under Viacom's
       proposed new Restated Certificate of Incorporation and

    -- those matters delegated to the COO, including all the COO functions
       set forth in Viacom's proposed new Restated Certificate of
       Incorporation.

   Committees of the Board. The Board of Directors of Viacom may delegate any
of its responsibilities to a committee. During the three-year period following
the merger, except with respect to the Compensation Committee and the Officers
Nominating Committee described below, CBS directors must be represented on
each committee in the same proportion as their representation on the full
Board of Directors, with a minimum of one CBS director on each committee.

                                      71
<PAGE>

   Viacom's proposed new Restated Certificate of Incorporation specifically
provides for two committees, the Officers Nominating Committee and the
Compensation Committee:

     Officers Nominating Committee. The Officers Nominating Committee will be
     composed of the COO or, in the event Mr. Karmazin is CEO, the CEO. During
     the three-year period following the merger, the Officers Nominating
     Committee has the power, subject to the powers of the Compensation
     Committee, to hire, elect, terminate, change positions, allocate
     responsibilities and determine non-equity compensation of officers and
     employees, other than the Chairman, CEO and COO. The Officers Nominating
     Committee will not, however, have the power to fill the position of Chief
     Financial Officer, Controller or General Counsel without approval by a
     majority of the Board of Directors, although the Officers Nominating
     Committee will have the power to terminate the employment of the persons
     holding those positions. Any action taken by the Officers Nominating
     Committee may be overturned by a vote of at least 14 directors.

     Compensation Committee. The Compensation Committee will be composed of
     three CBS directors who are independent directors and three non-CBS
     directors, all of whom are independent. Except as set forth in the
     following sentence, all compensation must be approved by the Compensation
     Committee. The Compensation Committee does not have the power to approve
     the annual compensation of any talent, as that term is commonly used in
     the media or entertainment industries, or of any employee whose annual
     cash compensation, measured as salary plus target bonus is less than $1
     million. These powers are delegated to the Officers Nominating Committee.

   Subsidiaries. The CEO and COO will be elected or appointed to the boards of
directors of all public subsidiaries of Viacom following the merger. In
addition, the Board of Directors of Viacom will have the right, in
consultation with the COO or, if Mr. Karmazin is the CEO, the CEO, to
implement corporate governance arrangements for any public subsidiary of
Viacom consistent with the corporate governance arrangements contained in
Viacom's proposed new Restated Certificate of Incorporation.

   Miscellaneous. The combined company may not issue any stock or other
securities, including authorized shares of Viacom Class A common stock and
Viacom preferred stock, giving the holder the right to vote on any matter on
which shareholders are entitled to vote, if National Amusements would, as a
result of the issuance, no longer own a majority of the outstanding voting
stock of the combined company. Any amendment, alteration, repeal or waiver of
the provisions of the new proposed Restated Certificate of Incorporation
summarized above requires the approval of at least 14 directors of the
combined company.

Accounting Treatment

   The merger will be accounted for as a purchase for financial accounting
purposes in accordance with generally accepted accounting principles. For
purposes of preparing Viacom's consolidated financial statements, Viacom will
establish a new accounting basis for CBS' assets and liabilities based upon
their fair values, the merger consideration and the costs of the merger.
Viacom believes that any excess of cost over the fair value of the net assets
of CBS will be recorded as goodwill and other intangible assets. A final
determination of the intangible asset lives and required purchase accounting
adjustments, including the allocation of the purchase price to the assets
acquired and liabilities assumed based on their respective fair values, has
not yet been made. Accordingly, the purchase accounting adjustments made in
connection with the development of the unaudited pro forma combined financial
information appearing elsewhere in or incorporated by reference into this
joint proxy statement/prospectus are preliminary and have been made solely for
purposes of developing that pro forma information. Viacom will determine the
fair value of CBS' assets and liabilities and will make appropriate purchase
accounting adjustments, including adjustments to the amortization period of
the intangible assets, upon completion of that determination.

Federal Income Tax Consequences

   The following discussion summarizes the material United States federal
income tax consequences of the merger assuming that it is consummated as
contemplated by this joint proxy statement/prospectus. This

                                      72
<PAGE>


discussion is based on the Internal Revenue Code, U.S. Treasury regulations,
judicial decisions and administrative rulings as of the date hereof, all of
which are subject to change, including changes with retroactive effect. The
discussion below does not address any state, local or foreign tax consequences
of the merger. This discussion assumes that shareholders hold such shares as
capital assets. The tax treatment of a shareholder may vary depending upon the
shareholder's particular situation, and some shareholders, including
individuals who hold options in respect of CBS common stock, insurance
companies, tax-exempt organizations, financial institutions or broker-dealers,
and persons who are neither citizens nor residents of the United States or that
are foreign corporations, foreign partnerships or foreign estates or trusts as
to the United States, may be subject to special rules not discussed below.

   EACH CBS SHAREHOLDER IS URGED TO CONSULT HIS, HER OR ITS OWN TAX ADVISOR AS
TO THE PARTICULAR TAX CONSEQUENCES TO HIM, HER OR IT OF THE MERGER, INCLUDING
THE APPLICABILITY AND EFFECT OF ANY STATE, LOCAL OR FOREIGN LAWS, AND OF
CHANGES IN APPLICABLE TAX LAWS.

   Federal Income Tax Consequences of the Merger. Cravath, Swaine & Moore,
counsel to CBS, and Paul, Weiss, Rifkind, Wharton & Garrison, counsel to
Viacom, have each rendered an opinion as to the qualification of the merger as
a reorganization under Section 368 of the Internal Revenue Code. Viacom and CBS
have requested a private letter ruling from the Internal Revenue Service that a
merger of CBS into Viacom/CBS LLC would be treated the same as a merger of CBS
into Viacom. Neither Viacom nor CBS has requested or will request an advance
ruling from the Internal Revenue Service as to whether the merger is a
reorganization under Section 368 of the Internal Revenue Code. An opinion of
counsel is not binding on the Internal Revenue Service or the courts. Further,
the opinions of Cravath, Swaine & Moore and Paul, Weiss, Rifkind, Wharton &
Garrison referred to above are based on, among other things, current law and
representations as to factual matters made by, among others, CBS and Viacom.
Any change in current law, which may or may not be retroactive, or failure of
any such factual representations to be true, correct and complete in all
material respects would jeopardize the conclusions reached by counsel in their
opinions. Neither CBS nor Viacom is currently aware of any facts or
circumstances that would cause any representations made by it to Cravath,
Swaine & Moore and Paul, Weiss, Rifkind, Wharton & Garrison to be untrue or
incorrect in any material respect.

   The material federal income tax consequences of the merger will be as
follows:

     (1) The merger will qualify as a reorganization under Section 368(a) of
  the Internal Revenue Code and each of CBS and Viacom will be a party to
  that reorganization within the meaning of Section 368(b) of the Internal
  Revenue Code.

     (2) Except for any payment received in lieu of fractional shares and to
  the extent that any payment by Viacom of transfer taxes is treated as
  taxable consideration received by the CBS shareholders, a shareholder will
  not recognize any income, gain or loss as a result of the receipt of Viacom
  Class B common stock or Viacom Series C preferred stock.

     (3) A CBS shareholder's tax basis for the shares of Viacom Class B
  common stock or Viacom Series C preferred stock received in the merger,
  including any fractional share interest for which payment is received, will
  equal such shareholder's tax basis in the shares of CBS common stock or CBS
  Series B preferred stock exchanged therefor.

     (4) A CBS shareholder's holding period for the Viacom Class B common
  stock or Viacom Series C preferred stock received in the merger, will
  include the period during which the shares of CBS common stock or CBS
  Series B preferred stock exchanged therefor were held.

   Prior to a merger of CBS into Viacom/CBS LLC, similar opinions will be
provided concerning such a merger.

   Payment received by a CBS shareholder in lieu of a fractional share interest
of Viacom Class B common stock or Viacom Series C preferred stock will be
treated as having been received in exchange for the fractional share interest
of Viacom Class B common stock or Viacom Series C preferred stock that the
shareholder would otherwise have been entitled to receive. This receipt of this
payment will result in gain or loss measured by the difference between the tax
basis allocable to the fractional share interest and the amount of payment
received. The gain or loss will be capital gain or loss to the shareholder.

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<PAGE>

   Viacom and CBS do not believe that any significant transfer taxes will be
payable as a consequence of the merger. Viacom's payment of any transfer taxes
that, to the knowledge of Viacom and CBS, may be payable as a consequence of
the merger should not be treated as taxable consideration received by CBS
shareholders in the merger. If the payment of any such taxes were treated as
taxable consideration, the CBS shareholders would recognize income or gain in
an amount not in excess of the amount of such taxable consideration.

   Viacom's obligation to complete the merger is conditioned upon, among other
things, its receipt of an opinion from Paul, Weiss, Rifkind, Wharton & Garrison
that the merger will be treated as a reorganization within the meaning of
Section 368(a) of the Internal Revenue Code. The obligation of CBS to complete
the merger is conditioned upon, among other things, CBS's receipt of an opinion
from Cravath, Swaine & Moore that the merger will be treated as a
reorganization within the meaning of Section 368(a) of the Internal Revenue
Code. These opinions of counsel will based in part upon representations, made
as of the effective time of the merger, by Viacom and CBS, which each counsel
will assume to be true, correct and complete. If the representations are
inaccurate, the opinions of counsel could be adversely affected.

   Backup Withholding. Under the backup withholding rules, a holder of CBS
common stock or CBS Series B preferred stock may be subject to backup
withholding at the rate of 31% with respect to payment received in exchange for
the fractional share interest unless the shareholder:

  .  is a corporation or comes within other exempt categories and, when
     required, demonstrates this fact or

  .  provides a taxpayer identification number and certifies that the
     taxpayer identification number is correct and the taxpayer is not
     subject to backup withholding for specified reasons, and otherwise
     complies with applicable requirements of the backup withholding rules.

   Any amount withheld under these rules will be credited against the
shareholder's federal income tax liability.

   Reporting Requirements. CBS shareholders will be required to attach a
statement to their tax returns for the taxable year in which the merger is
completed that contains the information set forth in Section 1.368(b) of the
Department of Treasury regulations. The statement must include the tax basis in
the CBS common stock or CBS Series B preferred stock surrendered and a
description of the Viacom Class B common stock or Viacom Series C preferred
stock received in the merger.

Merger Consideration

   At the effective time of the merger, each outstanding share of CBS common
stock will be converted into the right to receive 1.085 fully paid and
nonassessable shares of Viacom non-voting Class B common stock and each
outstanding share of CBS Series B preferred stock will be converted into the
right to receive 1.085 fully paid and non-assessable shares of Viacom Series C
preferred stock, except that a payment will be made in lieu of fractional
shares as described below. Any shares of CBS common stock or CBS Series B
preferred stock held by any direct or indirect wholly owned subsidiary of
Viacom or CBS will be included in the exchange, but any shares of CBS common
stock or CBS Series B preferred stock held by Viacom or CBS will not be
included, as described in the next paragraph. As of the effective time of the
merger, all shares of CBS common stock and CBS Series B preferred stock will no
longer be outstanding, will automatically be cancelled and will cease to exist,
and each holder of a certificate representing any shares of CBS common stock or
CBS Series B preferred stock will cease to have any rights other than the right
to receive the merger consideration. The exchange ratio was determined through
arm's-length negotiations between CBS and Viacom.

   As of the effective time of the merger, any shares of CBS common stock and
CBS Series B preferred stock owned immediately prior to the effective time of
the merger by Viacom or CBS, excluding any shares held by any direct or
indirect wholly owned subsidiary of Viacom or CBS, will be cancelled and
retired and will cease to exist and no consideration will be delivered in
exchange for these shares.

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Conversion of Shares; Procedures for Exchange of Certificates; Fractional
Shares

   The conversion of CBS common stock into the right to receive Viacom non-
voting Class B common stock, CBS Series B preferred stock into the right to
receive Viacom Series C preferred stock and, in both cases, the right to
receive payment instead of fractional shares will occur automatically at the
effective time of the merger. As soon as practicable after the effective time
of the merger, . or another bank or trust company designated by Viacom and
reasonably acceptable to CBS, in its capacity as exchange agent, will send a
transmittal letter to each former CBS shareholder. The transmittal letter will
contain instructions on how to obtain shares of Viacom Class B common stock in
exchange for shares of CBS common stock and shares of Viacom Series C preferred
stock in exchange for shares of CBS Series B preferred stock. CBS shareholders
should not send in their stock certificates until they receive the transmittal
letter and accompanying materials from the exchange agent.

   In the event of a transfer of ownership of CBS common stock or CBS Series B
preferred stock which is not registered in the records of CBS' transfer agent,
a certificate representing the proper number of shares of Viacom Class B common
stock or CBS Series B preferred stock, as appropriate, may be issued to a
person other than the person in whose name the certificate surrendered is
registered if the certificate is properly endorsed or otherwise is in proper
form for transfer and the person requesting the issuance pays any required
transfer or other taxes required by reason of the issuance of shares of Viacom
Class B common stock or CBS Series B preferred stock to a person other than the
registered holder of the certificate or establishes to the satisfaction of
Viacom that the taxes have been paid or are not applicable.

   All shares of Viacom Class B common stock issued upon conversion of shares
of CBS common stock and shares of Viacom Series C preferred stock issued upon
conversion of shares of CBS Series B preferred stock, together with any payment
in lieu of fractional shares of Viacom Class B common stock or Viacom Series C
preferred stock, will be deemed to have been issued and paid in full
satisfaction of all rights pertaining to the shares of CBS common stock or
preferred stock, subject to Viacom's obligation to pay any dividends or make
any other distributions with a record date after the effective time of the
merger that may have been declared or made by Viacom on shares of Viacom Class
B common stock or Viacom Series C preferred stock after the effective time of
the merger and which remain unpaid prior to the issuance of Viacom Class B
common stock in exchange for CBS common stock or Viacom Series C preferred
stock in exchange for CBS Series B preferred stock.

   No fractional shares of Viacom Class B common stock will be issued to any
CBS shareholder upon surrender of certificates previously representing CBS
common stock. For each fractional share of Viacom Class B common stock that
would otherwise be issued, Viacom, through the exchange agent, will pay to CBS
shareholders an amount equal to the product obtained by multiplying the
fractional share interest to which the shareholder would otherwise be entitled
by the closing price for a share of Viacom Class B common stock on the
Consolidated Tape, Network A, as reported in The Wall Street Journal (Northeast
edition), or any other authoritative source, on the first trading day
immediately following the effective time of the merger.

   No fractional shares of Viacom Series C preferred stock will be issued to
any CBS shareholder upon surrender of certificates previously representing CBS
Series B preferred stock. For each fractional share of Viacom Series C
preferred stock that would otherwise be issued, Viacom, through the exchange
agent, will pay to CBS shareholders an amount equal to the product of 1,000 and
the closing price referred to in the preceding paragraph.

Litigation

   In September 1999, three purported shareholder class action lawsuits were
filed against CBS and the members of the CBS Board of Directors; one in the
Supreme Court of the State of New York, County of New York, and two in the
Philadelphia County Court of Common Pleas. In the lawsuits, plaintiffs allege
that the defendants have breached their fiduciary duties by entering into the
merger agreement. The complaints seek an order declaring that defendants
breached their fiduciary duties and requiring defendants to take steps to
increase

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the short-term value of CBS stock through an active auction for control of CBS
and other means; compensatory damages in an unspecified amount; costs and
expenses; and such other relief as the courts may deem just and proper. CBS
believes that the lawsuits are without merit and plans to defend vigorously
against them.

Effective Time of the Merger

   The effective time of the merger will be the time of the filing of the
certificate of merger with the Secretary of State of the State of Delaware or
any later time as is agreed upon by Viacom and CBS and specified in the
certificate of merger.

Federal Securities Laws Consequences

   The Viacom Class B common stock and the Viacom Series C preferred stock to
be issued pursuant to the merger agreement will not be subject to any
restrictions on transfer arising under the Securities Act of 1933, except for
shares issued to any CBS shareholder who may be deemed to be an "affiliate" of
CBS or Viacom for purposes of Rule 145 under the Securities Act. It is expected
that each affiliate will enter into an agreement with Viacom providing that the
affiliate will not transfer any Viacom Class B common stock or Viacom Series C
preferred stock received in the merger except in compliance with the resale
provisions of Rules 144 or 145 under the Securities Act or as otherwise
permitted under the Securities Act. The merger agreement requires CBS to use
reasonable best efforts to cause its affiliates to enter into these agreements,
and CBS has represented and warranted that it has advised its affiliates of the
resale restrictions imposed by applicable securities laws. This joint proxy
statement/prospectus does not cover resales of Viacom Class B common stock or
Viacom Series C preferred stock received by any person upon consummation of the
merger, and no person is authorized to make any use of this joint proxy
statement/prospectus in connection with any resale.

Stock Exchange Quotation

   It is a condition to the consummation of the merger that the shares of
Viacom Class B common stock to be issued pursuant to the merger agreement and
into which the Viacom Series C preferred stock is convertible be authorized for
listing on the New York Stock Exchange, subject to official notice of issuance.
Viacom will file a listing application with the New York Stock Exchange.

   The Viacom Series C preferred stock will not be listed on an exchange.

Dissenters' Rights of Appraisal

   Neither holders of CBS common stock or CBS Series B preferred stock are
entitled to dissenters' rights of appraisal in connection with the merger.

   Holders of Viacom Class A common stock and Viacom Class B common stock are
not entitled to dissenters' rights of appraisal as a result of the merger.

Delisting and Deregistration of CBS Common Stock

   If the merger is consummated, the shares of CBS common stock will be
delisted from the NYSE, the Boston Stock Exchange, the Chicago Stock Exchange,
the Pacific Exchange and the Philadelphia Stock Exchange and will be
deregistered under the Exchange Act.

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                            THE MERGER AGREEMENT AND
                               RELATED AGREEMENTS

The Merger Agreement

   At the effective time of the merger, either CBS will merge with and into
Viacom or CBS will merge with and into Viacom/CBS LLC. The merger of CBS into
Viacom/CBS LLC will occur only if (1) guidance is received from the IRS, the
United States Department of Treasury or other appropriate governmental
authority and if the merger would not have an adverse tax effect to Viacom, CBS
or their shareholders, as a result of which, if the merger were structured as a
merger of CBS with and into Viacom/CBS LLC, each of Paul, Weiss, Rifkind,
Wharton & Garrison and Cravath, Swaine & Moore continues to be able to deliver
its opinion that the exchange of CBS common stock for Viacom Class B common
stock and the exchange of CBS Series B preferred stock for Viacom Series C
preferred stock will be tax-free for federal income tax purposes, and (2)
Viacom and CBS each determine that such a merger would not have an adverse tax
effect to them or to their shareholders

 Effective Time and Closing of the Merger

   The closing of the merger will take place on the first business day after
the satisfaction or, if permissible, waiver of the conditions to closing set
forth in the merger agreement. On the closing date, the merger will be
consummated by filing (1) a certificate of merger with the Secretary of State
of the State of Delaware and (2) articles of merger with the Department of
State of the Commonwealth of Pennsylvania. The effective time of the merger
will be the filing of the certificate of merger with the Secretary of State of
the State of Delaware, or any later time as may be agreed by the parties and
specified in the certificate of merger.

 Conversion of Securities

   At the effective time of the merger, each share of CBS Series B preferred
stock issued and outstanding immediately prior to the effective time of the
merger, including any shares owned by any direct or indirect wholly owned
subsidiary of Viacom or CBS but excluding any shares held in the treasury of
CBS or owned by Viacom immediately prior to the effective time of the merger,
will be converted into the right to receive 1.085 shares of Viacom Series C
preferred stock and each share of CBS common stock issued and outstanding
immediately prior to the effective time of the merger, including any shares
owned by any direct or indirect wholly owned subsidiary of Viacom or CBS but
excluding any shares to be cancelled pursuant to the following sentence, will
be converted into the right to receive 1.085 shares of Viacom Class B common
stock. At the effective time of the merger, each share held in the treasury of
CBS and each share owned by Viacom immediately prior to the effective time of
the merger will be cancelled and extinguished and no payment will be made for
those shares. After the effective time of the merger, each certificate that
previously represented shares of CBS common stock will represent only the right
to receive Viacom Class B common stock into which the shares of CBS common
stock are converted in the merger and payment instead of fractional shares of
Viacom Class B common stock and each certificate that previously represented
shares of CBS Series B preferred stock will represent only the right to receive
Viacom Series C preferred stock into which the shares of CBS Series B preferred
stock are converted in the merger and payment instead of fractional shares of
Viacom Series C preferred stock.

   As soon as practicable after the effective time of the merger, . or another
bank or trust company designated by Viacom and acceptable to CBS, in its
capacity as exchange agent, will send a transmittal letter to each former CBS
shareholder. The transmittal letter will contain instructions on how to obtain
shares of Viacom Class B common stock in exchange for shares of CBS common
stock and shares of Viacom Series C preferred stock in exchange for shares of
CBS Series B preferred stock. CBS shareholders should not send in their stock
certificates until they receive the transmittal materials from the exchange
agent.

Viacom's Proposed New Restated Certificate of Incorporation and By-laws

   Viacom's proposed new Restated Certificate of Incorporation and By-laws give
effect to the governance arrangements agreed between Viacom and CBS. You can
find more information on the governance arrangements in the sections titled
"The Merger--Directors, Management and Corporate Governance of the Combined
Company" and "Adoption of Restated Certificate of Incorporation."

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Representations and Warranties of Viacom and CBS

   Viacom and CBS made mutual customary representations and warranties in the
merger agreement regarding the following:

  . corporate organization and qualification to do business of each of the
    companies and their subsidiaries;

  .  validity and effectiveness of charters and by-laws;

  . capitalization of the companies;

  . authority to enter into the merger agreement;

  . absence of conflicts between the merger agreement and the merger, on the
    one hand, and other contractual and legal obligations of the companies,
    on the other hand;

  . requirement of consents, approvals, filings or other authorizations to
    enter into the merger agreement and consummate the merger;

  . possession and effectiveness of all permits and licenses and contracts
    necessary to carry on business as currently conducted;

  . absence of material non-competition agreements;

  . operation of business in material compliance with permits, licenses and
    applicable laws;

  . compliance with all applicable SEC filing requirements and accuracy and
    completeness of SEC filings;

  . financial statements contained in SEC filings;

  . absence of changes or events since December 31, 1998;

  . litigation;

  . employee benefit plans;

  . labor matters;

  . environmental matters;

  . intellectual property;

  . tax matters;

  . Year 2000 compliance;

  . opinion of financial advisors;

  . shareholder vote required to adopt the merger agreement;

  . use of brokers;

  . inapplicability of state anti-takeover provisions;

  . in the case of CBS, that neither the merger agreement nor the merger
    would give rise to the exercise or issuance of rights under its
    shareholders' rights plan;

  .  in the case of CBS, Gaylord Entertainment Company's agreement and proxy
     to vote in favor of the merger; and

  .  in the case of Viacom, Viacom/CBS LLC has engaged in no business
     activities and no election has been made to treat Viacom/CBS LLC as a
     taxable entity.

None of the representations and warranties made in the merger agreement survive
the closing of the merger.

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No Solicitation Provision

   CBS has agreed not to, directly or indirectly, through any officer,
director, agent or otherwise, initiate, solicit or knowingly encourage, or take
any other action knowingly to facilitate, any inquiries or the making of any
proposal that constitutes, or may reasonably be expected to lead to, any
"competing transaction," which is defined in the merger agreement as any
transaction, other than the merger, that would result in a third party or its
shareholders acquiring more than 35% of the voting power of the CBS common
stock then outstanding or more than 35% of the assets of CBS and its
subsidiaries, taken as a whole, or enter into or maintain or continue
discussions or negotiate with any person in furtherance of any related
inquiries or to obtain a competing transaction, or agree to or endorse any
competing transaction, or authorize any of the officers, directors or employees
of CBS or any agent or representative of CBS to take any such action. CBS has
agreed to notify Viacom as promptly as practicable of all the relevant material
details relating to all inquiries and proposals that CBS, or any officer,
director, employee, agent or representative, may receive relating to any of the
foregoing matters.

   Notwithstanding the foregoing, prior to the adoption of the merger agreement
by the shareholders of CBS, the Board of Directors of CBS is not prohibited
from:

     (1) furnishing information to, or entering into and engaging in
  discussions or negotiations with, any person that makes a bona fide
  unsolicited written proposal that the Board of Directors of CBS determines
  in good faith, after consultation with CBS' financial advisors and
  independent legal counsel, can be reasonably expected to result in a
  "superior proposal," which is defined in the merger agreement as any
  proposal that would result in a third party acquiring, directly or
  indirectly, more than 50% of the voting power of the outstanding CBS common
  stock or all or substantially all the assets of CBS and its subsidiaries,
  taken as a whole, for consideration which the Board of Directors of CBS
  determines in its good faith judgment to be more favorable to CBS'
  shareholders than the merger with Viacom, provided that CBS must notify
  Viacom of its intention to provide information to, or enter into
  negotiations with, a third party concerning a superior proposal, keep
  Viacom informed of the status and material terms of any superior proposal
  and enter into a confidentiality agreement with the third party on
  customary terms;

     (2) complying with its disclosure and other obligations under applicable
  laws; or

     (3) failing to make or withdrawing or modifying its recommendation to
  shareholders regarding adoption of the merger agreement following the
  making of a superior proposal if the Board of Directors of CBS, after
  consultation with and based upon advice of independent legal counsel,
  determines in good faith that the action is necessary for the Board of
  Directors of CBS to comply with its fiduciary duties under applicable law.

Mutual Covenants of Viacom and CBS

 Viacom and CBS have agreed as follows:

  . each company will cooperate to file the SEC documents necessary to
    complete the merger;

  . each company will call and hold a shareholder's meeting to vote upon the
    adoption of the merger agreement and, in the case of Viacom, the adoption
    of the proposed new Restated Certificate of Incorporation and the
    issuance of Viacom Class B common stock and Viacom Series C preferred
    stock in connection with the merger;

  . each company will solicit proxies in favor of the adoption of the merger
    agreement and, in the case of Viacom, the adoption of the proposed new
    Restated Certificate of Incorporation and the issuance of Viacom Class B
    common stock and Viacom Series C preferred stock in connection with the
    merger, unless it determines, after receiving advice from independent
    legal counsel, that failure to do so is required in order for its
    directors to comply with their fiduciary duties under applicable law;

  . each company will promptly make all governmental filings necessary to
    consummate the merger and otherwise use best efforts to consummate the
    merger, including, if necessary, committing to or effecting

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   the disposition of those of its assets or businesses as are required to be
   divested in order to obtain the consent of the FCC or to avoid or cause to
   be removed any other legal impediment that would otherwise prevent or
   materially delay the consummation of the merger;

  . each party will use reasonable best efforts to obtain any third party
    consents necessary, proper or advisable to consummate the merger;

  . each company will continue to allow the other company reasonable access
    to its corporate records;

  . Viacom's proposed new Restated Certificate of Incorporation and By-laws
    following the merger will contain the indemnification provisions in favor
    of officers and directors that are contained in Viacom's current Restated
    Certificate of Incorporation and By-laws;

  . subject to dollar limitations, for six years following the merger the
    combined company will maintain directors' and officers' liability
    insurance covering those persons who are currently covered by CBS'
    directors' and officers' liability insurance policy on terms comparable
    to CBS' existing coverage;

  . each company will promptly notify the other company of any event that
    would likely cause any representation or warranty to be untrue or
    inaccurate or any covenant or condition not to be complied with or
    satisfied, or of any failure to comply with or satisfy any covenant or
    condition;

  . neither company will take any action that would undermine the
    qualification of the merger as a tax-free reorganization under Section
    368 of the Internal Revenue Code;

  . Viacom will promptly prepare and submit an application to the New York
    Stock Exchange for the listing of the new shares of Viacom Class B common
    stock;

  . the companies will consult with each other regarding any public
    announcements they make concerning the merger;

  . the Viacom Board of Directors will take all necessary action to increase
    the number of Board members to eighteen and to cause to be appointed
    eight designees of CBS;

  . CBS will take the necessary action to render its shareholders' rights
    agreement inapplicable to the merger agreement and the merger;

  . Viacom will assume the debt and other liabilities and obligations of CBS;

  . CBS will notify Viacom of all persons that may be deemed affiliates of
    CBS under Rule 145 of the Securities Act, and CBS will use its reasonable
    best efforts to obtain from each affiliate a letter in which the
    affiliate agrees to comply with the resale restrictions of Rules 144 and
    145 under the Securities Act following the merger;

  . Viacom will take measures to give continuing employees credit under
    Viacom's benefit plans for prior service with CBS;

  . both companies may establish retention and severance agreements
    consistent with terms and conditions set forth in the merger agreement;

  . CBS will exercise its rights under the Gaylord proxy to vote in favor of
    the merger;

  . CBS will not take any action which would cause Viacom to be in violation
    of the tax matters agreement between CBS and Gaylord; and

  . Viacom will cause Viacom/CBS LLC to perform its obligations under the
    merger agreement.

Conduct of Business Prior to the Closing

   Viacom and CBS have each agreed that, subject to exceptions, between the
execution of the merger agreement and the effective time of the merger, each
company and its respective subsidiaries will:

  . conduct their businesses in the ordinary course of business and in a
    manner consistent with past practice;

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<PAGE>

  . use their reasonable best efforts to preserve substantially intact their
    business organizations and to keep available the services of their
    current officers, employees and consultants; and

  . use their reasonable best efforts to preserve their current relationships
    with customers, distributors, dealers, suppliers and other persons that
    have significant business relations with the companies.

   Viacom and CBS have also agreed that subject to exceptions, prior to the
effective time of the merger, without the prior written agreement of the other
party, they and their subsidiaries will not:

  . amend or otherwise change their charters or by-laws in a manner that
    would have a material adverse effect;

  . with respect to CBS and its subsidiaries, issue, sell or otherwise
    dispose of equity securities, except for:

    --the issuance of common stock upon the exercise of outstanding options
       and the conversion of CBS Series B preferred stock,

    --the issuance of common stock in connection with pending transactions,

    --the grant of options to purchase up to 22,200,000 shares of CBS
       common stock and

    --the grant of options to purchase up to 12,500,000 shares of Infinity
       Broadcasting Corporation;

  . with respect to Viacom and its subsidiaries, issue, sell or otherwise
    dispose of equity securities, except for:

    --the issuance of common stock upon the exercise of outstanding options
     and

    --the grant of options to purchase up to 6,000,000 shares of Viacom
       Class B common stock;

  . sell, encumber or otherwise dispose of any assets material to the
    respective companies and their subsidiaries, taken as a whole, other than
    in the ordinary course of business consistent with past practice;

  . declare, make or pay any dividend or other distribution other than:

    --intercompany cash dividends,

    --in the case of CBS and its subsidiaries, dividends made or paid by
       Infinity not to exceed $500,000,000 and

    --in the case of Viacom and its subsidiaries, dividends made or paid by
       Blockbuster not to exceed $50,000,000;

  . reclassify, combine, split, subdivide or redeem, purchase or otherwise
    acquire, directly or indirectly, any of their or their subsidiaries'
    capital stock;

  . except in connection with acquisitions that individually do not exceed
    $200,000,000 and in the aggregate do not exceed $1,000,000,000 and
    except, in the case of CBS and its subsidiaries, in connection with
    pending transactions:

    --acquire or otherwise invest in other companies or business
       organizations or

    --incur any indebtedness other than in the ordinary course of business
       and other than in connection with refinancings;

  . enter into or amend any material contract, agreement or transaction that
    would not be in the ordinary course of business and that would be
    reasonably likely to prevent or materially delay the consummation of the
    merger;

  . authorize any capital expenditures which are in the aggregate in excess
    of the amounts currently budgeted for fiscal year 1999 and, with respect
    to fiscal year 2000, 10% in excess of the 1999 amount, in each case for
    the respective companies and their subsidiaries taken as a whole;

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<PAGE>

  . increase compensation to executive officers or employees, except in
    accordance with retention or severance arrangements generally agreed to
    between the parties or as required by law or any existing agreement and
    except for increases in the ordinary course of business consistent with
    past practice;

  . grant any severance or termination pay to, or enter into, extend or amend
    any employment or severance agreement with, any director or executive
    officer or establish, enter into or amend any plan, agreement, trust,
    fund, policy or arrangement for the benefit of any director, executive
    officer or employee, except to enter into, extend or amend any employment
    or severance agreements in the ordinary course of business in accordance
    with past practice with any employee other than a director or officer of
    the parent company, subject to an agreed upon retention bonus cap,
    provided that no CBS or Viacom subsidiary will be restricted by any of
    the foregoing from:

    --entering into employment contracts with newly hired or promoted
       executive officers, or making severance payments, on terms
       substantially consistent with currently existing contracts or

    --providing for the payment of severance to executive officers or
       employees on terms substantially consistent with past practice;

  . materially change their accounting practices;

  . make any tax election that, individually or in the aggregate, would have
    a material adverse effect, or settle or compromise any material tax
    liability;

  . enter into any contract, agreement, lease, license, permit, franchise or
    other instrument or obligation which, if in existence and known prior to
    the execution of the merger agreement, would have conflicted with the
    entrance into and performance of the merger agreement in a manner that
    would give rise to a material adverse effect; and

  . CBS may not amend or modify the terms of the CBS Series B preferred stock
    without Viacom's written consent.

  Notwithstanding any of the foregoing:

  . CBS is not restricted from taking actions in connection with the
    consummation of the pending acquisitions of King World and Outdoor
    Systems on terms previously agreed to with these parties or, unless
    Viacom has consented, on other terms that would not be reasonably likely
    to have an impact that is both material and detrimental to CBS and its
    subsidiaries, taken as a whole;

  . Viacom is not restricted from consummating an exchange offer of
    Blockbuster shares owned by Viacom for shares of Viacom common stock
    owned by the shareholders of Viacom in accordance with procedures agreed
    upon between Viacom and CBS; and

  . neither Infinity nor Blockbuster is restricted from taking any action
    that would otherwise violate any of the restrictions on conduct of
    business prior to the effective time of the merger if its Board of
    Directors determines that the action is required to be taken in the
    exercise of the Board's fiduciary duties.

Stock Options and Employee Benefit Plans

 Stock Options and Other Stock Plans

   Each outstanding unexpired and unexercised option or warrant to purchase
shares of common stock of CBS will be automatically converted at the effective
time of the merger into an option or warrant to purchase shares of Viacom Class
B common stock, in a number determined by multiplying the number of shares of
CBS common stock that could have been purchased under the CBS option or warrant
by the exchange ratio of 1.085. The exercise price of these options will equal
the per-share exercise price of the corresponding CBS option or warrant divided
by the exchange ratio. The substitute options or warrants will be subject to
the same terms and

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conditions as the corresponding CBS options or warrants and the vesting of the
options or warrants will accelerate on account of the merger to the extent
provided in the applicable option or warrant. After the effective time of the
merger:

  . all references to CBS in CBS' equity based compensation plans and
    agreements will be deemed to refer to Viacom; and

  . Viacom will assume all of CBS' obligations with respect to the substitute
    options and warrants.

   Viacom will issue to each CBS option or warrant holder a document evidencing
its assumption of the options and warrants. Viacom has agreed to file a Form S-
8 or other appropriate registration statement covering the shares of Viacom
Class B common stock underlying the assumed options and warrants no later than
one business day after the effective time of the merger and to keep the
registration statement current.

 Other Employee Arrangements

   Viacom will recognize service with CBS under Viacom's employee benefit
plans, except where the crediting would result in duplication of benefits, and
will honor all personal and sick days accrued by CBS employees who continue
employment with Viacom after the effective time of the merger.

   Viacom may pay up to a total of $30 million to its employees as retention
bonuses, payable on or after the effective time of the merger. Viacom has also
established severance arrangements for its corporate staff, including the
executive severance plans described in the section captioned "Interests of
Persons in the Merger--Senior Management Arrangements--Viacom--Executive
Severance Plans." CBS may also establish similar retention, severance and
compensation arrangements as long as the total cost of those arrangements is
not materially greater than the cost of Viacom's arrangements.

 Conditions to Closing

   The obligations of Viacom and CBS to consummate the merger are subject to
the satisfaction or waiver of the following conditions:

  . Viacom shareholders approve:

    --the adoption of the merger agreement if CBS merges into Viacom;

    --the adoption of the proposed new Restated Certificate of
       Incorporation and the issuance of Viacom Class B common stock and
       Viacom Series C preferred stock in connection with the merger, if
       CBS merges into Viacom/CBS LLC;

  . expiration or termination of any applicable waiting period under the HSR
    Act;

  . no governmental authority or court having entered an order or taken other
    legal action making the merger illegal or otherwise prohibiting its
    consummation;

  . the SEC having declared the Viacom registration statement, of which this
    joint proxy statement/prospectus forms a part, effective and there
    existing no stop order or other action to suspend the effectiveness of
    the registration statement;

  .the making by both companies of all required filings and notices, and the
   receipt by both companies of all required governmental consents, approvals
   or other authorizations, other than those which, if not obtained, would
   not have a material adverse effect, at or after the effective time of the
   merger, on the business, results of operations or financial condition of
   CBS, Viacom and their subsidiaries, collectively taken as a whole;

  . authorization for listing on the New York Stock Exchange of the shares of
    Viacom Class B common stock to be issued to CBS shareholders and upon
    conversion of the CBS Series B preferred stock, subject to official
    notice of issuance;

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  . the continued truthfulness and accuracy of the representations and
    warranties, except where the failure to be true or correct would not
    have, individually or in the aggregate, a material adverse effect, and
    the performance or compliance in all material respects with all material
    agreements, and receipt from the other party of a certificate of an
    officer certifying to the foregoing; and

  . each company having received an opinion from its tax counsel that the
    merger will qualify as a tax-free reorganization under Section 368 of the
    Internal Revenue Code.

Termination and Termination Fees

   The merger agreement may be terminated and the merger abandoned at any time
prior to the closing date:

  . by mutual written consent of Viacom and CBS;

  . by either company if the transaction is not completed on or prior to
    August 31, 2000;

  . by CBS upon written notice to Viacom of the existence of a competing
    proposal for the acquisition of more than 50% of the voting power of CBS
    or all or substantially all of the assets of CBS and its subsidiaries,
    taken as a whole, for consideration which CBS' Board of Directors
    determines in its good faith judgment to be more favorable to CBS
    shareholders than the merger, provided, however, that termination
    pursuant to this provision will not be effective until Viacom has had two
    days within which to match the competing proposal and until CBS pays the
    termination fee described below;

  . by either company if CBS does not receive the required shareholder
    approval;

  . by either company upon the other company's breach of a representation,
    warranty, covenant or agreement, or if any representation or warranty
    becomes untrue, in either case so that the seventh condition to closing
    set forth above cannot be satisfied on or before August 31, 2000; or

  . by either company if a governmental authority has taken any final and
    non-appealable action prohibiting the consummation of the merger.

   If CBS terminates the merger agreement in accordance with the provision set
forth in the third bullet point above, CBS is required to pay Viacom a
termination fee of $1 billion. CBS is also required to pay Viacom a $1 billion
termination fee if all of the following occur:

  . either company terminates the merger agreement as a result of the CBS
    shareholders failing to adopt the merger agreement;

  . a competing proposal for the acquisition of more than 50% of the voting
    power or assets of CBS has been made public at or prior to the time of
    the failure to adopt the merger agreement; and

  . within 12 months after termination, CBS consummates, or enters into a
    binding agreement with respect to, a competing proposal.

The Voting Agreement

   Simultaneously with the execution of the merger agreement, National
Amusements, which is controlled by Mr. Redstone and which holds approximately
68% of the voting power of Viacom, entered into a voting agreement with CBS in
which it has agreed to vote all of its shares of Viacom Class A common stock in
favor of the adoption of the merger agreement and against any proposals in
opposition to the merger agreement. National Amusements has also agreed in the
voting agreement not to transfer ownership of any of its shares of Viacom Class
A common stock unless the transferee unconditionally agrees in writing to be
bound by the voting agreement. The voting agreement terminates upon the earlier
of the termination of the merger agreement or the effective time of the merger.

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The Stockholder Agreement

   Simultaneously with the execution of the merger agreement, National
Amusements also entered into a stockholder agreement with CBS, pursuant to
which National Amusements has agreed, for a period of three years following the
merger, to support the governance arrangements agreed to between Viacom and
CBS. Among other things, National Amusements has agreed to:

  . cause to be nominated and elected to the Viacom Board eight directors
    designated by CBS or by the CBS designees, so that there are eight CBS
    directors on the Viacom Board at all times;

  . take all action necessary to ensure that any vacancy in a CBS
    directorship is filled immediately by an independent director designated
    by a majority of the remaining CBS directors;

  . take all action necessary to ensure that no CBS director is removed
    unless the removal is for cause and is approved by at least 14 members of
    the Viacom Board;

  . take all action necessary to cause any vacancy in a seat currently held
    by a Viacom independent director to be filled by an independent director
    that meets the qualifications stated in the proposed new Restated
    Certificate of Incorporation;

  . not take any action to amend, modify or repeal, or adopt provisions or
    take other actions that would be inconsistent with, the provisions of
    Viacom's proposed new Restated Certificate of Incorporation and By-laws
    that relate to the governance structure of Viacom during the three year
    period following the merger;

  . not transfer any of its shares of Viacom Class A common stock unless the
    transferee unconditionally agrees in writing to be bound by the
    stockholder agreement; and

  . take all action necessary to ensure that it or its transferees own at all
    times a majority of the outstanding shares of voting stock of Viacom.

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    INTERESTS OF PERSONS IN THE MERGER--SENIOR MANAGEMENT ARRANGEMENTS

   In considering the respective recommendations of the Viacom Board and the
CBS Board with regard to the merger, you should be aware that, as described
below, several members of the respective managements and Boards of Directors of
Viacom and CBS may have interests in the merger that are different from, or in
addition to, your interests, and that may create potential conflicts of
interest. Three executive officers of Viacom are members of the ten-person
Viacom Board that approved the merger. Two executive officers of CBS are
members of the 11-person CBS Board that approved the merger.

Viacom

   Continuing Board Positions. All ten members of the current Viacom Board are
expected to continue as members of the Viacom Board following the effective
time of the merger, including Messrs. Redstone, Dauman and Dooley.

   Employment Agreement with Mr. Redstone. Viacom entered into an employment
agreement with Mr. Redstone to serve as its Chairman and CEO following the
effective time of the merger. Mr. Redstone will receive an annual base salary
of $1 million and an annual bonus, with an established target bonus of $5
million and a maximum bonus of $10 million for calendar year 2000, prorated to
reflect the actual number of days that the agreement is in effect during the
year 2000. The target and maximum bonus amounts increase by 10% annually
through 2003. Mr. Redstone will also receive deferred compensation of $2
million during calendar year 2000, prorated to reflect the number of days the
agreement is in effect during the year 2000, thereafter to be increased
annually by 10% of his salary and deferred compensation for the preceding year.
He will also receive a grant of options to purchase 2,000,000 shares of Viacom
Class B common stock, vesting in three equal annual installments.

   Resignation Agreements. Pursuant to agreements entered into with Viacom on
September 6, 1999, Messrs. Dauman and Dooley have agreed to resign from Viacom
effective at the effective time of the merger. Messrs. Dauman and Dooley will
each continue to serve as Deputy Chairman and Executive Vice President of
Viacom until the effective time of the merger and will each receive the
following payments:

  (1) as soon as practicable after their resignations:

    . a one-time cash payment equal to the amount that would have been
      payable under their current employment agreements through their
      original terms, or December 31, 2003,

    . payouts of all deferred compensation accounts and the balance of
      their accounts under the Viacom Excess Investment Plan, and

    . a transaction bonus in the amount of $5,000,000; and

  (2) on the earlier of the effective time of the merger and the date on
      which Viacom pays 1999 bonuses to its executive officers generally, the
      greatest of:

    . 110% of their respective bonuses received for 1998,

    . amounts which, when added to their salary and deferred compensation
      payable for 1999, would produce the highest 1999 total cash
      compensation paid to any other executive officer of Viacom or any of
      its affiliates, and

    . an amount the Viacom Board determines is appropriate to compensate
      each executive for his contribution to Viacom in 1999.

Assuming the merger is consummated on January 1, 2000 and the 1999 bonuses are
paid at 110%, it is estimated that each of Messrs. Dauman and Dooley will
receive aggregate payments under (1) and (2) above (excluding any payouts of
deferred compensation accounts and Viacom Excess Investment Plan balances) of
approximately $41 million.

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   All equity-based compensation awards previously granted to Messrs. Dauman
and Dooley will vest on the effective date of their resignation and each stock
option will continue to be exercisable in accordance with its terms until
December 31, 2003, subject to their compliance with the provisions of their
resignation agreements. In addition, Viacom will provide each of Messrs. Dauman
and Dooley with an office that is comparable in quality and size to his current
office at a location of his choice in midtown Manhattan, subject to Viacom's
approval, and a secretary until December 31, 2003, or until he obtains full
time employment, if earlier.

   Messrs. Dauman and Dooley will continue to participate in all savings,
retirement, welfare and fringe benefit plans of Viacom, or will receive the
cash equivalent of these benefits with an income tax gross up, through December
31, 2003, or, with respect to any welfare benefit, the date on which they
become entitled to comparable benefits through a subsequent employer, if
earlier. Mr. Dauman will also receive all additional service credit necessary
to provide him with 20 years of service under any Viacom plans for which that
credit would entitle him to additional benefits.

   In the event that either executive is terminated by Viacom without "cause,"
or terminates his own employment for "good reason," as these terms are defined
in their respective agreements, prior to the effective time of the merger, that
executive will be entitled to all of the payments described above promptly
following his termination, except for the $5 million transaction bonus, which
will be paid at the effective time of the merger. If the merger agreement is
terminated or the transactions contemplated by the merger agreement are
abandoned, the Viacom Board will determine in its good faith discretion whether
to pay Mr. Dauman and Mr. Dooley all or any part of the $5 million transaction
bonus.

   The agreements provide for a gross-up payment to be made to Messrs. Dauman
and Dooley to eliminate the effects of any possible imposition under the
Internal Revenue Code of the "golden parachute" excise tax on any payment or
benefit they receive under their agreements or otherwise.

   Messrs. Dauman and Dooley will be bound by restrictive covenants, including
a noncompetition covenant that applies for one year following their termination
of employment.

   Executive Severance Plans. Viacom adopted executive severance plans covering
its approximately ten Senior Vice Presidents, which includes two Vice
Presidents who are treated as Senior Vice Presidents for this purpose, and
approximately 66 Vice Presidents that became effective on September 6, 1999 and
continue in effect for one year following the effective time of the merger. The
benefits provided under the executive severance plans are conditioned on the
participant's execution of a release in favor of Viacom and replace the
severance benefits provided to participants under their employment agreements
with Viacom and any other Viacom severance plan, program, policy or
arrangement.

   Upon a termination of a participant's employment by Viacom without "cause"
or by the participant for "good reason," as those terms are defined in the
executive severance plans, Viacom will pay each participant a one-time cash
payment equal to the sum of any earned, unpaid base salary, automobile
allowance, vacation pay and pro-rated bonus through the date of termination and
the base salary, target bonus, prorated for partial years, and automobile
allowance he would have earned if he had remained employed for two years, in
the case of a Vice President, or three years, in the case of a Senior Vice
President. These payments will be made assuming increases in base salary and
bonus compensation consistent with the participant's existing employment
agreement and, after the expiration of such agreement, at an annualized rate
consistent with the last regular increase under the agreement. For participants
who do not have employment agreements and for participants whose employment
agreements did not specify a rate of increase, the salary increase shall be a
rate of increase, consistent with the participants' last regular increase prior
to September 6, 1999, but not in excess of 8% per year.

   All equity-based compensation awards previously granted to a participant
will vest on the date of his or her involuntary termination, and each stock
option will continue to be exercisable in accordance with its terms, for two
years, in the case of a Vice President, and three years, in the case of a
Senior Vice President, or through the option's original expiration date, if
earlier.

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   Additionally, for two years following termination in the case of a Vice
President and three years following termination in the case of a Senior Vice
President, each participant will be entitled to participate in Viacom's
medical, dental and life insurance plans until he or she secures full-time
employment that provides him or her with comparable coverage, and will either
be provided with car insurance or be reimbursed for his or her car insurance.

   On the date of termination, participants will be:

  . credited with two years of additional age and service for Vice Presidents
    or three years of additional age and service for Senior Vice Presidents
    for all purposes under all qualified and non-qualified retirement plans
    of Viacom, and

  . credited with two years of additional age and service for Vice Presidents
    or three years of additional age and service for Senior Vice Presidents
    under Viacom's retiree welfare benefit plans. Any increases in the annual
    amount credited to the accounts of active employees will apply to the
    participants.

   In the case of Senior Vice Presidents only, for a period of one year
following their termination, or, if earlier, until the participant secures
full-time employment, they will be provided with an office comparable in both
quality and size to the office they had prior to their termination, at a
location of their choice, subject to Viacom's consent. Viacom will bear the
cost of relocating the participant and will provide him or her with a
secretary.

   Each participant will continue to be bound by the non-solicitation, non-
disparagement, confidentiality and cooperation with litigation covenants in his
existing employment agreement, but the non-competition covenant in each of the
existing agreements will be waived by Viacom.

   The executive severance plans provide for a gross-up payment to be made to
the participants to eliminate the effects of the imposition under the Internal
Revenue Code of the "golden parachute" excise tax, if any, on any payment or
benefit they may receive under the executive severance plans or otherwise.

CBS

   Continuing Board Positions. Eight members of the CBS Board of Directors, to
be designated by the CBS Board prior to the effective time of the merger, will
become members of the Viacom Board as of the effective time of the merger. One
of the eight will be Mr. Karmazin.

   Stock Options. At ., approximately . shares of CBS common stock were subject
to options granted to executive officers and directors under compensatory
equity-based plans of CBS. With limited exceptions, all of these outstanding
CBS stock options that have not yet become exercisable, other than stock
options granted on or after July 28, 1999, will become exercisable as a result
of the merger. As of ., 1999, . CBS options were outstanding of which . were
exercisable.

   Restricted Stock. At ., approximately . shares of CBS common stock had been
granted to executive officers and directors in the form of restricted stock
awards under compensatory equity plans of CBS. All restrictions to which these
restricted stock awards are subject will lapse and will be deemed earned as a
result of the merger.

   Employment Agreement with Mr. Karmazin. In contemplation of the merger,
Viacom entered into an employment agreement with Mr. Karmazin that becomes
effective only upon the consummation of the merger, except for a stock "lock-
up" provision described below, which became effective upon the signing of the
employment agreement, and continues through December 31, 2003. Pursuant to the
agreement, Mr. Karmazin will serve as the President and COO of Viacom.

   Mr. Karmazin will receive an annual base salary of $1 million and an annual
bonus, with an established target bonus of $5 million and a maximum bonus of
$10 million for calendar year 2000, prorated to reflect the

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actual number of days that the agreement is in effect during the year 2000,
which target and maximum amounts will increase by 10% annually. Mr. Karmazin
will also receive deferred compensation of $2 million during calendar year
2000, prorated to reflect the number of days that the agreement is in effect
during the year 2000, thereafter to be increased annually during the remainder
of his employment in an amount equal to 10% of his salary and deferred
compensation for the preceding year. The agreement provides for a grant of
options to purchase 2,000,000 shares of Viacom Class B common stock, vesting in
three equal annual installments. During his employment term, Mr. Karmazin will
be provided with $5 million of life insurance. Mr. Karmazin will also be
entitled to a gross-up for any "golden parachute" excise tax that may be
imposed on him under the Internal Revenue Code as a result of any payment or
benefit he receives under his agreement or otherwise.

   The agreement provides that Mr. Karmazin will not, except in limited
circumstances, sell or otherwise dispose of his shares of CBS common stock, or,
following the merger, Viacom stock for the period beginning September 6, 1999,
the date the agreement was signed, and ending three years after the effective
time of the merger.

   In the event of a termination of Mr. Karmazin's employment without "cause"
or his voluntary resignation for "good reason," as such terms are defined in
his employment agreement, during the employment term Mr. Karmazin will be
entitled to receive salary, bonus, deferred compensation, perquisites, medical
and dental coverage, life insurance coverage for the balance of the employment
term, a supplemental pension benefit under Viacom's Excess Pension Plan and an
office including secretarial assistance for up to six months after his
employment terminates. Also upon such termination, Mr. Karmazin's stock options
including options that would have vested during the employment term will remain
exercisable for six months following the date of termination but not beyond
their expiration dates.

   CBS has the right under the merger agreement to establish retention,
severance and compensation arrangements for its officers and employees which
are similar to the retention and severance arrangements described above in
"Interests of Persons in the Merger--Senior Management Arrangements--Viacom"
provided that the aggregate cost of such CBS arrangements does not materially
exceed the aggregate cost of Viacom's similar arrangements. At present, CBS has
not made any final determination as to the types of arrangements which it may
establish or the officers or other employees who will be eligible to
participate in such arrangements.

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                                 THE COMPANIES

Viacom's Business

   Viacom is a diversified entertainment company with operations in six
segments:

  . Networks
                                                . Parks

  .Entertainment
                                                . Publishing

  . Video
                                                . Online.

 Networks

   Viacom owns and operates advertiser-supported basic cable television program
services and premium subscription television program services in the United
States and internationally. Viacom's MTV Networks division includes such owned
and operated program services as:

  . MTV: MUSIC TELEVISION in the United States, Europe and Latin America;

  . NICKELODEON in the United States, Latin America, Scandinavia, Japan and
    the Commonwealth of Independent States;

  . NICK AT NITE in the United States;

  . VH1 Music First in the United States, United Kingdom and Germany;

  . MTV's spin-off, MTV2 in the United States and Europe; and

  . TV LAND in the United States.

   Viacom's MTV Networks division also participates in program services as a
joint venturer, including MTV in Asia and Brazil and NICKELODEON in the United
Kingdom and Australia.

   Viacom's Showtime Networks Inc. subsidiary owns and operates SHOWTIME, THE
MOVIE CHANNEL(TM), and FLIX(R), and is a joint venture partner in and manager
of the SUNDANCE CHANNEL(R). Also, Viacom is a joint venture partner in:

  . COMEDY CENTRAL(R), an advertiser-supported basic cable program service in
    the United States;

  . GULF DTH LDC, a satellite direct-to-home platform offering programming in
    the Middle East; and

  . NOGGIN(TM), a subscription-supported, non-commercial children's
    educational program service, which is distributed by cable and satellite
    and includes a related online service.

 Entertainment

   The principal businesses of Viacom's Entertainment segment are:

  . PARAMOUNT PICTURES, which produces, acquires and distributes feature-
    length motion pictures;

  . PARAMOUNT HOME VIDEO, which distributes motion pictures and television
    product produced by Paramount and third parties on videocassette and disc
    in the U.S. and Canada;

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  . PARAMOUNT TELEVISION, VIACOM PRODUCTIONS, SPELLING TELEVISION and BIG
    TICKET TELEVISION, which produce, acquire and distribute series,
    miniseries, specials and made-for-television movies primarily for network
    television, first-run syndication, pay television and basic cable
    television;

  . THE PARAMOUNT STATIONS GROUP, which owns and operates 17 television
    stations and programs two additional stations pursuant to local marketing
    agreements;

  . FAMOUS PLAYERS, which owns and operates movie theatres in Canada; and

  . FAMOUS MUSIC, a music publisher.

   Additionally, Viacom has joint venture interests in television broadcasting,
international motion picture and video distribution and television programming
services, including:

  . UNITED PARAMOUNT NETWORK, in which Viacom is a 50% joint venture partner.
    Pursuant to current FCC regulations, Viacom may not be permitted to
    maintain its 50% ownership interest together with ownership of the CBS
    network;

  . UNITED INTERNATIONAL PICTURES (UIP); Viacom owns a one-third interest in
    this venture which distributes Paramount's, Universal's and MGM's motion
    pictures outside the U.S. and Canada. MGM announced this year that it
    intends to withdraw from UIP effective October 31, 2000;

  . UNITED CINEMAS INTERNATIONAL (UCI); Viacom owns a 50% interest in this
    venture which owns and operates movie theatres in Europe, Latin America
    and Asia; and

  . CINEMA INTERNATIONAL B.V. (CIBV), in which Viacom currently is a 50%
    joint venture partner but has agreed to become the sole owner, which
    distributes Paramount's motion pictures on videocassette and disc outside
    the U.S. and Canada and acquires and distributes motion pictures and
    television product produced by third parties.

  . Various international television programming services, including the
    Movie Channel Middle East and the Paramount Comedy Channel in the UK.

 Video

   The Company operates the home video and video game rental and retailing
business through BLOCKBUSTER INC. As of December 31, 1998, the Company operated
or franchised approximately 6,380 stores in the U.S., its territories and 25
other countries. BLOCKBUSTER offers titles primarily for rental and also offers
titles for purchase on a "sell-through" and previously viewed basis. During
1998, BLOCKBUSTER implemented revenue-sharing arrangements directly with major
motion picture studios, including PARAMOUNT PICTURES, thereby increasing the
availability of newly released videos in its domestic stores. In all of its
domestic stores and many of its stores outside of the U.S., BLOCKBUSTER rents
video games and sells previously played video games. In addition, in several
hundred domestic stores and various international markets, BLOCKBUSTER rents
and sells digital versatile discs and rents DVD players. Approximately 18% of
Blockbluster's common stock was recently sold to the public.

 Parks

   Through PARAMOUNT PARKS, Viacom owns and operates five regional theme parks
and a themed attraction in the United States and Canada. Each of the theme
parks features attractions based on Viacom's intellectual properties.

 Publishing

   Through SIMON & SCHUSTER, Viacom publishes and distributes consumer
hardcover books, trade paperbacks, mass-market paperbacks, children's books,
audiobooks, electronic books and CD-ROM products in

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the United States and internationally. SIMON & SCHUSTER's flagship imprints
include SIMON & SCHUSTER, POCKET BOOKS, SCRIBNER, and THE FREE PRESS. SIMON &
SCHUSTER also develops special imprints and publishes titles based on MTV,
NICKELODEON and PARAMOUNT PICTURES products. SIMON & SCHUSTER distributes its
products directly and through third parties. SIMON & SCHUSTER also delivers
content and sells products on Internet Web sites operated by various imprints
or linked to individual titles.

 Online

   Viacom operates Internet sites which are targeted to the current audiences
of its various MTV, VH1 and NICKELODEON program services, including NOGGIN, as
well as to new audiences such as those who do not receive cable or direct-to-
home satellite services. In addition to providing entertainment and information
on such Internet sites, Viacom also sells its own licensed and third party
merchandise.

CBS' Business

   CBS is one of the largest radio and television broadcasters in the United
States. CBS operates its businesses through its Television, Cable and Infinity
segments. The Television segment consists of CBS' 16 owned and operated
television stations, which are located in seven of the nation's ten largest
markets, and the CBS television network. On October 12, 1999, CBS acquired from
Gaylord Entertainment Company the broadcast station KTVT-TV Dallas-Fort Worth,
Texas. The CBS television network operations are subdivided into five areas:
entertainment; news; sports; enterprises, which produces, distributes and
markets first-run and off-network programming; and new media consisting of CBS'
Internet businesses. CBS' Cable segment consists of CBS' cable networks,
including The Nashville Network, Country Music Television and two regional
sports networks and a global provider of satellite services to broadcast, cable
and corporate networks.

   The Infinity segment corresponds to CBS' majority owned subsidiary, Infinity
Broadcasting Corporation, which conducts CBS' radio and outdoor advertising
businesses.

   Infinity Broadcasting Corporation owns and operates approximately 160 AM and
FM radio stations located in 35 markets. TDI Worldwide, Inc., a wholly owned
subsidiary of Infinity, is one of the largest outdoor advertising companies in
the United States and sells space on various media, including buses, trains,
train platforms and terminals throughout commuter rail systems and on painted
billboards and phone kiosks.

   CBS' Internet businesses, which consist primarily of its operation of the
Internet sites CBS.com and Country.com, also include CBS' minority investments
in three public companies, SportsLine USA, Inc. (NASDAQ: SPLN), which publishes
several sports Internet sites, including CBS.SportsLine.com, MarketWatch.com,
Inc. (NASDAQ: MKTW), which publishes the Internet site CBS.MarketWatch.com. and
Medscape Inc. (NASDAQ: MSCP), which publishes a consumer health Internet site.
CBS' other Internet investments include Storerunner, Inc., Office.com, Inc.,
Switchboard, Inc., ThirdAge Media, Inc., Intelligent Systems for Retail, Inc.,
which operates Webvan.com, Jobs.com, Inc., Medscape Inc., Women's Consumer
Network LLC. and Wrenchead.com, Inc., as well as its majority interest in the
Internet portal operated by iWon, Inc. CBS acquired equity interests in Big E
Entertainment (NASDAQ: BIGE), which operates Hollywood.com and Rx.com, Inc.

   In addition to the acquisitions listed above, on . , CBS entered into a
definitive merger agreement with King World Productions, Inc. King World is the
distributor of a number of shows, including "The Oprah Winfrey Show," "Wheel of
Fortune," "Jeopardy!" and "Hollywood Squares." This merger closed on November
 . , 1999. On May 27, 1999, Infinity entered into a definitive agreement to
acquire Outdoor Systems, Inc. Outdoor Systems is a leading outdoor advertising
company in North America, operating bulletin, poster, mall and transit
advertising display faces in the United States, Canada and Mexico. The
consummation of the merger with Outdoor Systems is subject to conditions,
including approval by Outdoor Systems and Infinity shareholders and review by
antitrust authorities. CBS believes that completion of the Outdoor Systems
transaction will occur by the end of 1999.

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                  REGULATORY MATTERS AND THIRD-PARTY APPROVALS

Antitrust

   Viacom and CBS each have filed a Premerger Notification and Report Form for
review under the HSR Act with the Federal Trade Commission and the Antitrust
Division of the United States Department of Justice. The HSR Act provides for
an initial 30 calendar day waiting period following the filing by the parties
of the Premerger Notification and Report Forms before the merger may be
consummated. Viacom made its filing on September 20, 1999 and CBS made its
filing on September 23, 1999. However, the Antitrust Division of the Department
of Justice and the Federal Trade Commission continue to have the authority to
challenge the merger on antitrust grounds before and after the merger is
completed. The HSR Act further provides that if, within the initial 30 calendar
day waiting period, the Federal Trade Commission or the Department of Justice
issues a request for additional information or documents, the waiting period
will be extended until 11:59 p.m. on the twentieth day after the date of
substantial compliance by both filing parties with the request. On October 22,
1999, the Antitrust Division issued a request for additional information to the
parties.

   Viacom and CBS conduct operations in a number of foreign countries where
regulatory filings or approvals with applicable authorities will be required in
connection with the consummation of the merger.

   At a minimum, premerger notification filings with national antitrust
authorities will be required in the following foreign jurisdictions: Brazil,
Canada, Germany, Ireland, Japan, The Netherlands and South Africa. A post-
closing submission will be required with the antitrust authorities in Austria.
The Brazilian antitrust filing was made on September 28, 1999. The Irish
antitrust filing was made on October 6, 1999. The required premerger filings
with the antitrust authorities in the remaining jurisdictions are expected to
be made promptly.

   Consummation of the merger is conditioned upon, among other things, the
absence of any preliminary or permanent injunction or other order issued by any
federal or state court of competent jurisdiction which prohibits or restricts
the consummation of the merger. Viacom and CBS believe that all material
filings and approvals have been made or obtained, or will be made or obtained,
as the case may be.

Federal Regulation of Television and Radio Broadcasting

   General. Television and radio broadcasting are subject to the jurisdiction
of the Federal Communications Commission under the Communications Act of 1934,
most recently amended by the Telecommunications Act of 1996. The Communications
Act prohibits the operation of broadcasting stations except under a license
issued by the FCC and empowers the FCC, among other actions, to:

  . issue, renew, revoke and modify broadcasting licenses;

  . assign frequency bands;

  . determine stations' frequencies, locations and operating power;

  . regulate some of the equipment used by stations;

  . adopt other regulations to carry out the provisions of the Communications
    Act;

  . impose penalties for violation of such regulations; and

  . impose annual fees as well as fees for processing applications and other
    administrative functions.

Under the Communications Act, the FCC also regulates certain aspects of the
operation of cable television systems and other electronic media that compete
with broadcast stations.

   The Communications Act prohibits the assignment of a broadcast license or
the transfer of control of a licensee without prior approval of the FCC. The
merger is subject to such FCC approval of the transfer of control of CBS and
its various licensee subsidiaries to Viacom. Because the application for
transfer of control of CBS will involve a substantial change in ownership or
control, the application must be placed on public notice for a period of no
less than 30 days during which time petitions to deny the application may be
filed by

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the public. If the FCC grants the application, interested parties would have 30
days from the date of public notice of the grant to seek reconsideration or
review of that grant by the full commission, or as the case may be, a court of
competent jurisdiction. The full commission has an additional 10 days to set
aside on its own motion any action taken by the FCC's staff, if action on the
application were made in the first instance by the staff of the FCC; if action
is made in the first instance by the full commission, the full commission may
set aside its own action within 30 days of public notice of such action. When
passing on an assignment or transfer application, the FCC is prohibited from
considering whether the public interest might be served by an assignment or
transfer to any party other than the assignee or transferee specified in the
application.

   License Renewals. Under the Telecommunications Act, the FCC is authorized to
renew broadcast licenses for terms of up to eight years. The Telecommunications
Act requires renewal of a broadcast license if the FCC finds that:

  . the station has served the public interest, convenience and necessity;

  . there have been no serious violations of either the Communications Act or
    the FCC's rules and regulations by the licensee; and

  . there have been no other serious violations that taken together
    constitute a pattern of abuse.

In making its determination, the FCC may consider petitions to deny but cannot
consider whether the public interest would be better served by a person other
than the renewal applicant. Under the Telecommunications Act, competing
applications for the same frequency may be accepted only after the FCC has
denied an incumbent's application for renewal of license. Applications for
renewal of licenses for one television station owned by CBS and 10 radio
stations owned by Infinity are currently pending before the FCC. Petitions to
deny were filed against the renewal applications of seven of the radio
stations; however, CBS continues to believe that it will receive renewal of
these licenses.

   Ownership Regulation. The Communications Act and FCC rules and regulations
and the Telecommunications Act also regulate broadcast ownership. The FCC has
promulgated rules that, among other matters, limit the ability of individuals
and entities to own or have an official position or ownership interest, known
as an attributable interest above a specific level in broadcast stations as
well as other specified mass media entities. As detailed below, in August 1999,
the FCC substantially revised a number of its multiple ownership and
attribution rules. However, these rules will not become effective until
November 16, 1999 and may still be modified or reconsidered in subsequent
proceedings. In three separate orders, the FCC revised its rules regarding
restrictions on television ownership, radio-television cross-ownership, and
attribution of broadcast ownership interests. The three orders, which resolve a
number of rulemaking proceedings launched at the beginning of the decade, take
into consideration mandates included in the Telecommunications Act, which
liberalized the radio ownership rules and directed the FCC to consider similar
deregulation for television. The FCC's various broadcast ownership rules,
inclusive of the recent revisions, are summarized below:

   Local Radio Ownership. With respect to radio licenses, the maximum allowable
number of stations that can be commonly owned in a market varies depending on
the number of radio stations within that market, as determined using a method
prescribed by the FCC. In markets with more than 45 stations, one company may
own, operate or control up to eight radio stations, with no more than five in
either AM or FM.

   Local Television Ownership. The FCC's new TV duopoly rule permits parties to
own two TV stations without regard to contour overlap provided they are located
in separate markets referred to as designated market areas. In addition, the
new rules permit parties in larger designated market areas to own up to two
television stations in the same designated market area so long as at least
eight independently owned and operating full-power television stations remain
in the market at the time of acquisition and at least one of the two stations
is not among the top four-ranked stations in the market based on audience
share. In addition, without regard to numbers of remaining or independently
owned TV stations, the FCC will permit television duopolies within the same
designated market area so long as the signals of the stations involved do not
overlap.

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Satellite stations that simply rebroadcast the programming of a "parent"
station will continue to be exempt from the duopoly rule if located in the same
designated market area as the "parent" station. The duopoly rule also applies
to same-market local marketing agreements involving more than 15% of the
brokered station's program time, although current local marketing agreements
will be exempt from the TV duopoly rule for a limited period of time of either
two or five years, depending on the date of the adoption of the local marketing
agreement. Further, the FCC may grant a waiver of the TV duopoly rule if one of
the two television stations is a "failed" or "failing" station, or the proposed
transaction would result in the construction of a new television station.

   Following consummation of the merger, and exclusive of other acquisitions,
the combined company could potentially have duopolies in the following six
television markets: Philadelphia, Boston, Dallas, Miami, Detroit, and
Pittsburgh. While the combined company will seek to maintain ownership of the
television stations in these markets under the new television duopoly rules,
there can be no assurance that the combined company will be able to retain two
television stations in each of the duopoly markets. On November 16, 1999, the
first date applications can be filed proposing duopolies under the revised TV
duopoly rule, more than one application might be filed relating to stations in
these markets, all of which may not be able to be granted because of the
requirement that eight independent voices must remain in the market. The FCC
has proposed that in such situations, random selection be employed to determine
the order in which the simultaneously filed applications will be processed.

   National Television Ownership Cap. On the national level, the FCC imposes a
35 percent national audience reach cap for television ownership, under which
one party may not have an attributable interest in television stations which
reach more than 35 percent of all U.S. television households. The Commission
discounts the audience reach of a UHF station for this purpose by 50 percent.
The FCC will consider whether to change the national ownership cap and the "UHF
discount" as part of the biennial review of its broadcast ownership rules
initiated in 1998. Additionally, under the new FCC rules, for entities that
have attributable interests in two stations in the same market, the FCC counts
the audience reach of that market only once for national cap purposes.

   The television stations currently held by Viacom and CBS would have an
aggregate national audience reach for purposes of the national ownership cap of
approximately 41%. As these stations would exceed the FCC's 35% national
ownership cap under the merger, it will be necessary, absent legislative or
regulatory relief, to divest specific television stations in order to comply
with the national ownership cap.

   Dual Network Rule. In the Telecommunications Act, Congress directed the FCC
to liberalize its rule, which then generally prohibited television stations
from affiliating with an entity that maintained more than one national network.
The FCC's implementing regulation states that a television broadcast station
may not affiliate with an entity that maintains one of the existing four major
networks (ABC, CBS, NBC, and Fox) and one of other specific qualifying networks
in existence as of February 8, 1996. The legislative history of the dual
network rule suggests that the rule was intended to prohibit one of the four
major networks from acquiring either of The WB or United Paramount Network. The
FCC is reviewing this rule as part of the biennial review.

   Although the acquisition of an ownership interest in CBS will be reviewed by
the FCC under the dual network rule, the FCC regulations do not identify the
amount and nature of the ownership interest required to trigger the dual
network prohibition. Accordingly, it is possible that, absent either
legislative or regulatory relief, the combined company might be required to
divest some or all of Viacom's 50% interest in United Paramount Network.

   Radio-Television Cross Ownership. The so-called "one-to-a-market" rule has
until recently prohibited common ownership or control of a radio station,
whether AM, FM or both, and a television station in the same market, subject to
waivers in some circumstances. The FCC's new radio-television cross-ownership
rule embodies a graduated test based on the number of independently owned media
voices in the local market. In

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large markets, i.e., markets with at least 20 independently owned media voices,
a single entity can own up to one television station and seven radio stations
or, if permissible under the new TV duopoly rule, two television stations and
six radio stations.

   Under the FCC's new rules, waivers of the one-to-a-market rule will be
granted only under the failed station test. Unlike under the TV duopoly rule,
the FCC will not waive the radio-television cross-ownership rules in situations
of failing or unbuilt stations.

   In accordance with the schedule imposed by the FCC for comments under the
proposed FCC rules, by November 16, 1999, licensees with existing conditional
waivers of the one-to-a-market rule must demonstrate to the FCC their
compliance or non-compliance with the new rule. The FCC's Mass Media Bureau
will replace these waivers with permanent approvals as appropriate. Existing
conditional waivers which do not comply with the new rule will be extended
until the conclusion of the FCC's biennial review in 2004; the same
grandfathering relief will be afforded to pending applications for conditional
waivers filed on or before July 29, 1999, which are ultimately granted by the
Commission. Any application proposing a radio-television combination filed
after that date must comply with the new rules. Also, the grandfathered status
of radio/TV combinations will terminate upon an assignment or transfer of
control.

   While CBS currently holds conditional temporary waivers granted under the
prior FCC one-to-a-market rule allowing CBS to operate station combinations of
one TV station and up to eight radio stations in numerous markets, the
"grandfathered" status of the combinations will end as a result of the merger.
Under the new FCC one-to-a-market rule, the combined company exceeds radio-
television cross-ownership caps and may need to divest up to an aggregate of 12
radio stations in Los Angeles, Chicago, Dallas, Washington/Baltimore and
Sacramento.

   Attribution of Ownership. Under the FCC's recently revised attribution
rules, a direct or indirect purchaser of various types of securities of the
combined company could violate FCC regulations or policies if that purchaser
owned or acquired an "attributable" interest in other media properties in the
same area as stations owned by the combined company in a manner prohibited by
the FCC. Under the FCC's revised rules, an "attributable" interest for purposes
of the Commission's broadcast ownership rules generally includes:

  . equity and debt interests, which combined exceed 33% of a licensee's
    total assets, if the interest holder supplies more than 15% of total
    weekly programming, or is a same-market media entity, whether TV, radio,
    cable or newspaper;

  . 5% or greater voting stock interest. Note that equity interests up to 49%
    are nonattributable if the licensee is controlled by a single majority
    shareholder and the interest holder is not otherwise attributable under
    the "equity/debt plus" standard;

  . 20% or greater voting stock interest, if the holder is a qualified
    passive investor;

  . any equity interest in a limited liability company or limited
    partnership, unless properly "insulated" from management activities; and

  . all officers and directors of a licensee and its direct or indirect
    parent.

   Under the new rules, all non-conforming interests acquired before November
7, 1996 are permanently grandfathered and thus do not constitute attributable
ownership interests. Any nonconforming interests acquired after that date need
to be brought into compliance by August 5, 2000.

   Alien Ownership. The Communications Act limits the ability of foreign
entities or individuals to own or hold interests in broadcast licenses. As
applicable to the combined company, non-U.S. citizens, collectively, may
directly or indirectly own or vote up to twenty percent of the capital stock of
a corporate licensee. In addition, a broadcast license may not be granted to or
held by any corporation that is controlled, directly or indirectly, by any
other corporation more than one-fourth of whose capital stock is owned or voted
by non-U.S. citizens or their representatives, by foreign governments or their
representatives, or by non-U.S. corporations, if

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the FCC finds that the public interest will be served by the refusal or
revocation of such license. The FCC has interpreted this provision of the
Communications Act to require an affirmative public interest finding before a
broadcast license may be granted to or held by any such corporation, and the
FCC has made such affirmative findings only in limited circumstances.

Other Regulations, Legislation and Recent Developments Affecting Broadcast
Stations

   Digital Television Service. The FCC has taken a number of steps to implement
digital television broadcasting service in the United States. The FCC has
adopted a digital television table of allotments that provides all authorized
television stations with a second channel on which to broadcast a digital
television signal. The FCC has attempted to provide digital television coverage
areas that are comparable to stations' existing service areas. The FCC has
ruled that television broadcast licensees may use their digital channels for a
wide variety of services such as high-definition television, multiple channels
of standard definition television programming, audio, data, and other types of
communications, subject to the requirement that each broadcaster provide at
least one free video channel equal in quality to the current technical
standard.

   Digital television channels will generally be located in the range of
channels from channel 2 through channel 51. The FCC has required affiliates of
ABC, CBS, Fox and NBC in the top 10 television markets to begin digital
broadcasting by May 1, 1999. Many stations, including several of the combined
company's stations, have already begun digital broadcasting. Affiliates of the
four major networks in the top 30 markets must begin digital broadcasting by
November 1, 1999, and all other commercial broadcasters must do so by May 1,
2002.

   The FCC's plan calls for the digital television transition period to end in
the year 2006, at which time the FCC expects that television broadcasters will
cease non-digital broadcasting and return one of their two channels to the
government, allowing that spectrum to be recovered for other uses. Under the
Balanced Budget Act, however, the FCC is authorized to extend the December 31,
2006 deadline for reclamation of a television station's non-digital channel if,
in any given market one or more television stations affiliated with ABC, CBS,
NBC or Fox is not broadcasting digitally, and the FCC determines that such
stations have "exercised due diligence" in attempting to convert to digital
broadcasting; or less than 85% of the television households in the station's
market subscribe to a multichannel video service that carries at least one
digital channel from each of the local stations in that market, and less than
85% of the television households in the market can receive digital signals off
the air using either a set-top converter box for an analog television set or a
new digital television set.

   The FCC is currently considering whether cable television system operators
should be required to carry stations' digital television signals in addition to
the currently required carriage of stations' analog signals. In July 1998, the
FCC issued a Notice of Proposed Rulemaking posing several different options for
the carriage of digital signals and solicited comments from all interested
parties. The FCC has yet to issue a decision on this matter.

   The implementation of digital television will also impose substantial
additional costs on television stations because of the need to replace
equipment and because some stations will need to operate at higher utility
costs and there can be no assurance that our television stations will be able
to increase revenue to offset such costs. The FCC is also considering imposing
new public interest requirements on television licensees in exchange for their
receipt of digital television channels. In addition, the Telecommunications Act
allows the FCC to charge a spectrum fee to broadcasters who use the digital
spectrum to offer subscription-based services. The FCC has adopted rules that
require broadcasters to pay a fee of 5% of gross revenues received from
ancillary or supplementary uses of the digital spectrum for which they charge
subscription fees, excluding revenues from the sale of commercial time. Neither
Viacom nor CBS can predict what future actions the FCC might take with respect
to digital television, nor can either company predict the effect of the FCC's
present digital television implementation plan or such future actions on the
combined company's business. The combined company will incur considerable
expense in the conversion to digital television and is unable to predict the
extent or timing of consumer demand for any such digital television services.

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   Digital Audio Radio Service and Low-Power FM. The Commission has authorized
or is considering various digital audio radio services. In January 1995, the
Commission adopted rules to allocate spectrum for satellite digital audio radio
services. The Commission has issued two authorizations to launch and operate
satellite digital audio radio services. The FCC also has undertaken an inquiry
into the terrestrial broadcast of digital audio radio services signals,
including a conversion to in-band on-channel transmissions by existing radio
broadcasters. Neither Viacom nor CBS can predict the impact of either satellite
or terrestrial digital audio radio services on its business. CBS has a
significant ownership interest in USA Digital Radio, Inc., which is developing
an in-band on-channel terrestrial digital audio radio services technology.

   In addition, the FCC recently proposed the creation of a new low-power FM
radio service that would operate in the existing FM band. The Commission is in
the process of collecting comments on this proposal and at this time neither
Viacom nor CBS can predict either the outcome of this proceeding or the impact,
if any, that a new low-power FM radio service might have on the combined
company's broadcast operations.

Internet

   Federal, state and international laws and regulations either in effect or
under consideration that govern interactive or online communications prohibit
the transmission of obscene, indecent, or otherwise unlawful communications and
impose restrictions on the collection, use, and disclosure of personally
identifiable information about both children and adults. Such prohibitions and
restrictions could affect the business and operations of the combined company.
In addition, some of the businesses operated by CBS and Viacom permit online
users to post and access content and to communicate through a web site or
comparable vehicle. In some instances, the material posted or communicated by
third parties may infringe the copyrights or trademarks of others, be subject
to libel, fraud, or other claims, or otherwise be actionable. Although Federal
legislation limits the liability of web site operators for copyright
infringement and other types of civil claims by users of their systems, the
precise contours of these limitations are not yet clear. Similarly, the
combined company may face claims of liability by third parties who believe
users of the combined company's web sites infringe their interests and there
can be no assurance any such liabilities will not have an adverse effect on the
combined company's businesses or operations.

   Some businesses operated by both CBS and Viacom permit users to perform
musical works and sound recordings over the Internet. The owners of the
copyrights in the performed musical works and the sound recordings may be
entitled to receive license fees for some or all of these performances.
Further, license fees may need to be paid for the copies of the works that are
stored on the combined company's servers to facilitate such performances. Some
of these fees have not yet been set, and there can be no assurance that such
fees will not have an adverse effect on the combined company's businesses or
operations.

   Proposals for additional or revised statutory or regulatory requirements are
considered by Congress, the FTC, the FCC, other Federal agencies, and state and
local governments from time to time, and a number of such proposals are under
consideration at this time. Moreover, both the FTC and state attorneys general
are actively monitoring online offerings in connection with consumer protection
concerns. It is possible that some of the provisions and requirements described
herein are now, and in the future may be, the subject of Federal or state
legislation, agency proceedings or court litigation. It is not possible to
predict what legal, legislative, regulatory or judicial changes, if any, may
occur or their impact on the combined company's businesses or operations.

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            DESCRIPTION OF VIACOM CAPITAL STOCK FOLLOWING THE MERGER

   The following summary of the terms of the capital stock of Viacom following
the merger may not contain all information that is important to you and we
refer you to the full text of Viacom's proposed new Restated Certificate of
Incorporation, attached to this joint proxy statement/prospectus as Annex B,
Viacom's amended By-laws, attached to this joint proxy statement/prospectus as
Annex C, the Delaware General Corporation Law and the merger agreement. This
summary is qualified in its entirety by reference to these documents.

   The authorized capital stock of Viacom consists of 500 million shares of
Viacom Class A common stock, three billion shares of Viacom Class B common
stock and 200 million shares of preferred stock, par value $0.01 per share,
issuable in series.

Viacom Class A Common Stock

   As of September . , 1999, the most recent practicable date prior to the
printing of this joint proxy statement/prospectus, there were 139,923,921
shares of Viacom Class A common stock issued and outstanding. Shares of Viacom
Class A common stock are not redeemable. Holders of shares of Viacom Class A
common stock are entitled to one vote per share.

   So long as there are 10,000 shares of Viacom Class A common stock
outstanding, each record holder of shares of Viacom Class A common stock may
convert any or all of its shares into an equal number of shares of Viacom Class
B common stock.

Viacom Class B Common Stock

   Viacom Class B common stock has rights, privileges, limitations,
restrictions and qualifications identical to Viacom Class A common stock except
that shares of Viacom Class B common stock have no voting rights other than
those required by the Delaware General Corporation Law. As of October . , 1999,
the most recent practicable date prior to the printing of this joint proxy
statement/prospectus, there were 605,085,135 shares of Viacom Class B common
stock issued and outstanding. Shares of Viacom Class B common stock are not
redeemable.

Voting and Other Rights of Viacom Common Stock

   Voting Rights. Under Viacom's proposed new Restated Certificate of
Incorporation, except as noted below or otherwise required by the Delaware
General Corporation Law, holders of the outstanding shares of Viacom Class A
common stock vote together with the holders of the outstanding shares of all
other classes of capital stock of Viacom entitled to vote, without regard to
class. At the present time, however, there are no outstanding shares of any
other class of capital stock of Viacom entitled to vote. Under Viacom's
proposed new Restated Certificate of Incorporation:

  . each holder of an outstanding share of Viacom Class A common stock is
    entitled to cast one vote for each share registered in the name of the
    holder and

  . the affirmative vote of the holders of a majority of the outstanding
    shares of Viacom Class A common stock is necessary to approve any
    consolidation or merger of Viacom with or into another corporation
    pursuant to which shares of Viacom Class A common stock would be
    converted into or exchanged for any securities or other consideration.

   A holder of an outstanding share of Viacom Class B common stock is not
entitled to vote on any question presented to the shareholders of Viacom,
including but not limited to whether to increase or decrease, but not below the
number of shares then outstanding, the number of authorized shares of Viacom
Class B common stock. However, under the Delaware General Corporation Law, a
holder of an outstanding share of Viacom Class B common stock is entitled to
vote on any proposed amendment to Viacom's Restated Certificate of
Incorporation, if the amendment will increase or decrease the par value of the
shares of Viacom Class B common stock, or alter or change the powers,
preferences or special rights of the shares of Viacom Class B

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common stock so as to affect them adversely. Subject to the foregoing, any
future change in the number of authorized shares of Viacom Class B common stock
or any consolidation or merger of Viacom with or into another corporation
pursuant to which shares of Viacom Class B common stock would be converted into
or exchanged for any securities or other consideration could be consummated
with the approval of the holders of a majority of the outstanding shares of
Viacom Class A common stock and without any action by the holders of shares of
Viacom Class B common stock.

   Dividends. Subject to the rights and preferences of any outstanding
preferred stock, dividends on Viacom Class A common stock and Viacom Class B
common stock are payable equally on shares of Class A common stock and Class B
common stock out of the funds of Viacom legally available therefor when, as and
if declared by the Viacom Board.

   Rights in Liquidation. In the event Viacom is liquidated, dissolved or wound
up, whether voluntarily or involuntarily, the net assets of Viacom would be
divided ratably among the holders of the then outstanding shares of Viacom
Class A common stock and Viacom Class B common stock after payment or provision
for payment of the full preferential amounts to which the holders of any series
of preferred stock of Viacom then issued and outstanding would be entitled.

   Split, Subdivision or Combination. If Viacom splits, subdivides or combines
the outstanding shares of Viacom Class A common stock or Viacom Class B common
stock, the outstanding shares of the other class of Viacom common stock shall
be proportionally split, subdivided or combined in the same manner and on the
same basis as the outstanding shares of the other class of Viacom common stock
have been split, subdivided or combined.

   Preemptive Rights. Shares of Viacom Class A common stock and Viacom Class B
common stock do not entitle a holder to any preemptive rights enabling a holder
to subscribe for or receive shares of stock of any class or any other
securities convertible into shares of stock of any class of Viacom. The Viacom
Board possesses the power to issue shares of authorized but unissued Viacom
Class A common stock and Viacom Class B common stock without further
shareholder action, subject to the requirements of applicable law and stock
exchanges, unless National Amusements would no longer hold a majority of the
outstanding shares of voting stock of Viacom as a result of the issuance. The
number of authorized shares of Viacom Class A common stock and Viacom Class B
common stock could be increased with the approval of the holders of a majority
of the outstanding shares of Viacom Class A common stock and without any action
by the holders of shares of Viacom Class B common stock.

   Trading Market. The outstanding shares of Viacom Class A common stock and
Viacom Class B common stock are listed for trading on the NYSE. The Registrar
and Transfer Agent for Viacom common stock is The Bank of New York.

   Alien Ownership. Viacom's proposed new Restated Certificate of Incorporation
provides that Viacom may prohibit the ownership or voting of a percentage of
its equity securities in order to ensure compliance with the requirements of
the Communications Act.

Viacom Series C Preferred Stock

   Designation. Series C Preferred Stock, par value $.01.

   Dividends. If declared by the Viacom Board of Directors, cash dividends are
payable in an amount per share equal to 1,000 times the aggregate per share
amount of each cash dividend declared or paid on the Viacom Class B common
stock. In addition, in the event any dividend or distribution on the shares of
Viacom Class B common stock is paid in cash or any debt security or instrument
or other property (other than cash dividends subject to the immediately
preceding sentence, a distribution of shares of Viacom Class B common stock or
other Viacom capital stock or a distribution of rights or warrants to acquire
Viacom Class B common stock or other Viacom capital stock, at a price less than
the fair market value), then like kind dividends are paid

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on each share of Viacom Series C preferred stock, in an amount equal to 1,000
times the distribution paid on each share of Viacom Class B common stock. The
dividend multiple is subject to adjustment in the event of a stock dividend or
distribution paid on, or a subdivision, split, combination, consolidation or
reverse split of, the Viacom Class B common stock, whether by way of
reclassification, reorganization or otherwise.

   Voting Rights. Each share of Viacom Series C preferred stock entitles the
holder to 100 votes on all matters submitted to a vote of the holders of the
Viacom common stock. The vote multiple is subject to adjustment in the event of
a stock dividend or distribution paid on, or a subdivision, split, combination,
consolidation or reverse split of the Viacom Class A common stock, whether by
way of reclassification, reorganization or otherwise.

   Conversion. Each share of Viacom Series C preferred stock is convertible, at
the option of the holder, at any time, into 1,000 shares of Viacom Class B
common stock. Payment of fair market value will be made in lieu of issuing
fractional shares. The conversion rate is subject to adjustment in the event of
a stock dividend or distribution paid on, or a subdivision, split, combination,
consolidation or reverse split of the Viacom Class B common stock, whether by
way of reclassification, reorganization or otherwise.

   Liquidation, Dissolution or Winding Up. Upon any voluntary or involuntary
liquidation, dissolution or winding up of Viacom, no distribution will be made
to the holders of Viacom common stock unless the holders of Viacom Series C
preferred stock have received:

  . $.01 plus an amount equal to accrued and unpaid dividends and
    distributions on the Viacom Series C preferred stock or

  . if greater, an amount equal to 1,000 times the aggregate amount to be
    distributed per share to holders of Viacom Class B common stock.

In addition, no distributions will be made to the holders of stock ranking on a
parity with the Viacom Series C preferred stock, unless simultaneous
distributions are made to the holders of Viacom Series C preferred stock in
proportion to the total amounts to which the holders of shares of Viacom Series
C preferred stock are entitled as described above. The liquidation multiple is
subject to adjustment in the event of a stock dividend or distribution paid on,
or a subdivision, split, combination, consolidation or reverse split of the
Viacom Class B common stock, whether by way of reclassification, reorganization
or otherwise.

   Consolidation, Merger, Etc. If Viacom enters into any consolidation, merger,
division, share exchange, combination, sale of all or substantially all of its
assets, or other transaction in which the shares of Viacom Class B common stock
are exchanged for or changed into other securities, cash and/or any other
property, then each share of Series C preferred stock will be similarly
exchanged for or changed into the aggregate amount of securities, cash and/or
other property (payable in like kind) for which or into which each share of
Viacom Class B common stock is changed or exchanged multiplied by the highest
of the dividend multiple, the conversion rate or the liquidation multiple in
effect immediately prior to the event.

   No Redemption. The shares of Viacom Series C Preferred Stock are not
redeemable by Viacom or the holder.

Other Viacom Preferred Stock

   Unless National Amusements would no longer hold a majority of the
outstanding shares of voting stock of Viacom as a result of the issuance, the
Viacom Board, without further action by the shareholders, is authorized to
issue preferred stock from time to time in one or more series, with such
distinctive serial designations as may be stated or expressed in the resolution
or resolutions providing for the issue of such stock adopted from time to time
by the Board of Directors; and in the resolution or resolutions providing for
the issuance of shares of each particular series, the Board of Directors is
also expressly authorized to fix:

  . the right to vote, if any;

  . the consideration for which the shares of the series are to be issued;

  . the number of shares constituting the series, which number may be
    increased, except as otherwise fixed by the Board of Directors, or
    decreased (but not below the number of shares then outstanding) from time
    to time by action of the Board of Directors;

                                      101
<PAGE>


  . the rate of dividends and the times at which dividends will be payable on
    the series and the preference, if any, which the dividends will have
    relative to dividends payable on shares of any other preferred stock of
    Viacom;

  . whether dividends will be cumulative or noncumulative, and, if
    cumulative, the date or dates from which dividends will be cumulative;

  . the rights, if any, of holders in the event of any voluntary or
    involuntary liquidation, merger, consolidation, distribution or sale of
    assets, dissolution or winding up of the affairs of Viacom; the rights,
    if any, of holders to convert the shares into or exchange the shares for
    shares of any other preferred stock of Viacom or for any debt securities
    of Viacom, and the terms and conditions, including price and rate of
    exchange, of the conversion or exchange:

  . whether shares of the series will be subject to redemption, and the
    redemption price or prices and other terms or redemption, if any,
    including redemption prices payable in shares of Viacom Class A common
    stock or Viacom Class B common stock;

  . the terms and amounts of any sinking fund for the purchase or redemption
    of shares of the series; and

  . any and all other powers, preferences and relative, participating,
    optional or other special rights and qualifications, limitations or
    restrictions pertaining to shares of the series permitted by law.

                                      102
<PAGE>

                       COMPARISON OF RIGHTS OF HOLDERS OF

                        VIACOM STOCK AND CBS STOCK

   The rights of Viacom shareholders are governed by Delaware law, including
the Delaware General Corporation Law, and Viacom's current Restated Certificate
of Incorporation and By-laws. The rights of CBS shareholders are governed by
Pennsylvania law, including the Pennsylvania Business Corporation Law, and CBS'
Restated Articles of Incorporation and By-laws.

   Upon consummation of the merger, holders of shares of CBS common stock will
become holders of shares of Viacom non-voting Class B common stock.
Consequently, following the merger, Delaware law and Viacom's proposed new
Restated Certificate of Incorporation and its By-laws, both as amended as a
result of the merger, will govern the rights of former CBS holders of common
stock. Copies of Viacom's current Restated Certificate of Incorporation and By-
laws and CBS' Restated Articles of Incorporation and By-laws have been filed
with the SEC and will be sent to any shareholder of Viacom or CBS upon request.
Copies of Viacom's proposed new Restated Certificate of Incorporation and By-
laws, as they will be amended as a result of the merger, are attached as
Annexes B and C to this joint proxy statement/prospectus.

   A tabular comparison of shareholder rights of Viacom and CBS holders of
common stock both before and after the effective time of the merger is included
below. This table is not intended to be a complete statement of all differences
or a complete description of the specific provisions referred to in this
summary, and the identification of specific differences is not intended to
indicate that other significant differences do not exist. However, the table
includes a description of these differences which we believe to be material.
Other than voting rights, there is no difference between the rights of holders
of Viacom Class A common stock and Viacom Class B common stock.

                                      103
<PAGE>

- -------------------------------------------------------------------------------
                                                              Combined Company
    Shareholder       Viacom Before        CBS Before the       Shareholder
      Rights        the Merger                Merger               Rights
- -------------------------------------------------------------------------------
Voting,             Class A Common      Common Stock:
generally.........  Stock:                                   See "Viacom
                                                             Before the
                                                             Merger." Shares
                                                             of Viacom Class B
                                                             Common Stock,
                                                             including the
                                                             shares which CBS
                                                             shareholders will
                                                             receive in the
                                                             merger, have no
                                                             voting rights or
                                                             powers except as
                                                             required by
                                                             Delaware law.

                                        .1 vote per
                    . 1 vote per        share.
                      share.

                                        .No cumulative
                    . No cumulative     voting.
                      voting.

                                        . Plurality vote
                    . Plurality vote      for directors.
                      for directors.

                                        . Majority vote
                    . Majority vote       for all other
                      for all other       matters except
                      matters.            as set forth
                                          below where a
                                          higher vote is
                                          required for
                                          certain
                                          approvals and
                                          except as
                                          otherwise
                                          required by
                                          Pennsylvania
                                          law.

                    Class B Common
                    Stock:

                    . Except as
                      required by
                      Delaware law,
                      this class has
                      no voting
                      rights or
                      powers.
- -------------------------------------------------------------------------------
Approval of
Certain Business
Combinations......  Under Delaware      Under
                    law, subject to     Pennsylvania law,    See "Viacom
                    certain limited     subject to           Before the
                    exceptions, the     certain limited      Merger."
                    approval of the     exceptions, the
                    holders of a        affirmative vote
                    majority of the     of a majority of
                    outstanding stock   the votes cast by
                    entitled to vote    all shareholders
                    is required for     entitled to vote
                    any merger or       thereon is
                    consolidation of    required for any
                    a Delaware          merger or
                    corporation with    consolidation of
                    another             a Pennsylvania
                    corporation or      corporation with
                    the sale, lease     another
                    or exchange of      corporation or
                    all or              the sale, lease,
                    substantially all   exchange or other
                    of that             disposition of
                    corporation's       all or
                    assets.             substantially all
                                        of that
                                        corporation's
                                        property and
                                        assets outside of
                                        the ordinary
                                        course of
                                        business.

- -------------------------------------------------------------------------------

                                      104
<PAGE>

- --------------------------------------------------------------------------------
                                                              Combined Company
   Shareholder      Viacom Before the     CBS Before the         Shareholder
      Rights              Merger              Merger               Rights
- --------------------------------------------------------------------------------

Approval of
Certain Business
Combinations with
Affiliates........
                    Delaware law        Pennsylvania law
                    contains            contains             See "Viacom
                    provisions that     provisions that      Before the
                    may restrict        may restrict         Merger."
                    certain business    certain business
                    combinations        combinations
                    between a           between a
                    corporation and     corporation and
                    its affiliates      its affiliates.
                    which are not       See the
                    wholly owned.       provisions
                    Viacom's Restated   described under
                    Certificate of      "Anti-Takeover
                    Incorporation and   Provisions".
                    By-laws do not
                    impose any higher
                    voting
                    requirements for
                    the approval of
                    these actions.

                                        Except as
                                        described in the
                                        next paragraph,
                                        CBS' Restated
                                        Articles of
                                        Incorporation and
                                        By-laws do not
                                        impose any higher
                                        voting
                                        requirements for
                                        the approval of
                                        business
                                        combinations.

                                        CBS' Restated
                                        Articles of
                                        Incorporation
                                        require that
                                        certain
                                        combinations with
                                        a 5% (at least)
                                        shareholder
                                        receive the
                                        approval of
                                        holders of a
                                        supermajority
                                        (80%) of all
                                        shares entitled
                                        to vote and a
                                        majority of
                                        shares held by
                                        all shareholders
                                        other than such
                                        5% shareholder
                                        and its
                                        affiliates unless
                                        the transaction
                                        is approved by a
                                        majority of
                                        disinterested
                                        directors or
                                        satisfies certain
                                        specified
                                        fairness criteria
                                        with respect to
                                        the consideration
                                        to be received
                                        and certain other
                                        matters.

                                        Amendment of
                                        these provisions
                                        requires the
                                        approval of at
                                        least 80% of the
                                        combined vote of
                                        all shares
                                        entitled to vote
                                        generally in an
                                        annual election
                                        of directors and
                                        a majority of the
                                        combined vote of
                                        such shares held
                                        by all
                                        shareholders
                                        other than 5%
                                        shareholders and
                                        their affiliates,
                                        voting as a
                                        class.

- --------------------------------------------------------------------------------

                                      105
<PAGE>

- --------------------------------------------------------------------------------
                                                              Combined Company
   Shareholder      Viacom Before the     CBS Before the         Shareholder
      Rights              Merger              Merger               Rights
- --------------------------------------------------------------------------------

Number of
Directors and
Size of Board.....  Under Delaware      Under                Under Viacom's
                    law, the            Pennsylvania law,    proposed new
                    certificate of      the articles of      Restated
                    incorporation or    incorporation or     Certificate of
                    the by-laws may     the by-laws may      Incorporation,
                    specify the         specify the          the number of
                    number of           number of            directors will be
                    directors.          directors.           expanded to 18.
                                                             In addition, (1)
                                                             the size of the
                                                             Board may only be
                                                             changed by the
                                                             affirmative vote
                                                             of at least 14
                                                             directors, (2)
                                                             eight of the
                                                             directors serving
                                                             as CBS directors
                                                             on September 6,
                                                             1999 (or any
                                                             independent
                                                             director elected
                                                             or appointed
                                                             prior to the
                                                             effective time of
                                                             the merger to
                                                             serve as a CBS
                                                             director) that
                                                             are designated by
                                                             CBS' board prior
                                                             to the merger (or
                                                             replacements who
                                                             are independent
                                                             directors) will
                                                             become members of
                                                             Viacom's board at
                                                             the effective
                                                             time and (3) of
                                                             the 10 directors
                                                             on Viacom's board
                                                             who are not CBS'
                                                             board designees,
                                                             two are directors
                                                             who were first
                                                             elected to serve
                                                             on the Viacom
                                                             board after 1993,
                                                             are not members
                                                             of the management
                                                             of either Viacom
                                                             or National
                                                             Amusements, and,
                                                             in the event they
                                                             leave the board,
                                                             must be replaced
                                                             with
                                                             disinterested,
                                                             independent
                                                             directors who are
                                                             chief executive
                                                             officers, chief
                                                             operating
                                                             officers or chief
                                                             financial
                                                             officers or
                                                             former chief
                                                             executive
                                                             officers of a
                                                             Fortune 500
                                                             company or a non-
                                                             U.S. company of
                                                             comparable size.
                                                             Generally, for a
                                                             period of three
                                                             years following
                                                             the merger, these
                                                             provisions cannot
                                                             be changed
                                                             without the
                                                             approval of at
                                                             least 14
                                                             directors.


                    Viacom's Restated   CBS' By-laws
                    Certificate of      allow between 3
                    Incorporation       and 24 directors
                    allows between      to serve on its
                    three and 20        board. CBS' By-
                    directors to        laws authorize
                    serve on their      the board to set
                    board. Viacom's     the number of
                    By-laws authorize   directors within
                    the board to set    these limits.
                    the number of
                    directors within
                    the parameters
                    set by the
                    Restated
                    Certificate of
                    Incorporation.

                                        CBS' board has
                                        set the number of
                                        directors at 11,
                                        increasing to 12
                                        on December 1,
                                        1999.


                                        Under the CBS By-
                    Viacom's board      laws, a majority
                    has set the         of the directors
                    number of           must be
                    directors at ten.   independent
                                        directors.

- --------------------------------------------------------------------------------

                                      106
<PAGE>

- --------------------------------------------------------------------------------
                                                              Combined Company
   Shareholder      Viacom Before the     CBS Before the         Shareholder
      Rights              Merger              Merger               Rights
- --------------------------------------------------------------------------------

Term of Office....  Under Viacom's      Under CBS'           Under Viacom's
                    by-laws, each       Restated Articles    proposed new
                    director serves     of Incorporation,    Restated
                    for a one-year      CBS may, but need    Certificate of
                    term.               not, create a        Incorporation and
                                        classified board.    applicable law,
                                        However CBS has      all directors
                                        not done so and,     will serve for a
                                        under CBS' By-       one-year term.
                                        laws, each           Pursuant to the
                                        director's term      National
                                        expires at the       Amusements
                                        next annual          stockholder
                                        meeting.             agreement, for
                                                             the three-year
                                                             period following
                                                             the merger,
                                                             National
                                                             Amusements agreed
                                                             to cause to be
                                                             nominated and
                                                             elected each CBS
                                                             director (or
                                                             replacements who
                                                             are independent
                                                             directors).

- --------------------------------------------------------------------------------

Removal of          Under Delaware      Under                After the
Directors.........  law, any director   Pennsylvania law,    effective time of
                    may be removed      unless otherwise     the merger, any
                    from office with    provided in a by-    director may be
                    or without cause    law adopted by       removed with or
                    by the              the shareholders,    without cause in
                    affirmative vote    any director may     accordance with
                    of the holders of   be removed from      Delaware law.
                    a majority of the   office by the        However, pursuant
                    shares of           shareholders with    to the National
                    outstanding stock   or without cause     Amusements
                    entitled to vote    by the               stockholder
                    in the election     affirmative vote     agreement, for
                    of that director.   of a majority of     the three-year
                                        the votes cast       period following
                                        with certain         the merger,
                                        exceptions in the    National
                                        case of a            Amusements has
                                        classified board.    agreed to take
                                                             any action
                                                             necessary to
                                                             ensure that no
                                                             CBS director is
                                                             removed as a
                                                             director of
                                                             Viacom unless
                                                             such removal is
                                                             for cause and is
                                                             approved by at
                                                             least 14 members
                                                             of Viacom's
                                                             board.

                    Viacom's By-laws
                    provide for the
                    removal of
                    directors in
                    accordance with
                    Delaware law.

                                        Under CBS'
                                        Restated Articles
                                        of Incorporation
                                        and its By-laws,
                                        directors may be
                                        removed by CBS'
                                        shareholders
                                        without cause
                                        only by the
                                        affirmative vote
                                        of holders of at
                                        least 80% of the
                                        combined vote of
                                        the shares of
                                        outstanding stock
                                        entitled to vote
                                        generally in an
                                        annual election.

- --------------------------------------------------------------------------------


                                      107
<PAGE>

- --------------------------------------------------------------------------------
                                                              Combined Company
   Shareholder      Viacom Before the     CBS Before the         Shareholder
      Rights              Merger              Merger               Rights
- --------------------------------------------------------------------------------

Vacancies.........  Under Viacom's      Under CBS' By-       Under Viacom's
                    By-laws,            laws, vacancies      proposed new
                    vacancies on the    on the CBS board     Restated
                    Viacom board        may be filled by     Certificate of
                    shall be filled     the board, even      Incorporation, if
                    by the board        if less than a       one of the eight
                    only, even if       quorum is            CBS directors
                    less than a         present, or the      vacates his or
                    quorum is           CBS board may        her seat, the
                    present.            reduce the size      Viacom board,
                                        of the board.        subject to its
                                        Vacancies may        fiduciary duties,
                                        also be filled by    is required to
                                        election by the      take all action
                                        shareholders.        necessary to
                                                             appoint as a
                                                             successor a
                                                             person designated
                                                             by a majority of
                                                             the remaining CBS
                                                             directors.
                                                             National
                                                             Amusements has
                                                             agreed in its
                                                             shareholder
                                                             agreement with
                                                             CBS to vote for
                                                             such designee.

                                                             If one of the ten
                                                             Viacom directors
                                                             vacates his or
                                                             her seat, the
                                                             Viacom board will
                                                             fill the vacancy.
                                                             However, if a
                                                             directorship held
                                                             by a person who
                                                             is a director of
                                                             Viacom first
                                                             elected after
                                                             1993 and is not
                                                             management of
                                                             Viacom or
                                                             National
                                                             Amusements, or
                                                             the replacement
                                                             of any such
                                                             person, becomes
                                                             vacant, the
                                                             Viacom board,
                                                             subject to its
                                                             fiduciary duties,
                                                             is required to
                                                             take all action
                                                             necessary to
                                                             ensure that the
                                                             vacancy is filled
                                                             by a
                                                             disinterested,
                                                             independent
                                                             person who is the
                                                             chief executive
                                                             officer, chief
                                                             operating officer
                                                             or chief
                                                             financial officer
                                                             or former chief
                                                             executive officer
                                                             of a Fortune-500
                                                             company or a non-
                                                             U.S. public
                                                             company of
                                                             comparable size.
                                                             Generally, for a
                                                             period of three
                                                             years following
                                                             the merger, these
                                                             provisions cannot
                                                             be changed
                                                             without the
                                                             approval of at
                                                             least 14
                                                             directors.

- --------------------------------------------------------------------------------

                                      108
<PAGE>

- --------------------------------------------------------------------------------
                                                              Combined Company
   Shareholder      Viacom Before the     CBS Before the         Shareholder
      Rights              Merger              Merger               Rights
- --------------------------------------------------------------------------------

Calling of
Special Meeting
of Shareholders...
                    Under Delaware                           Under Viacom's
                    law, special        Under                By-laws, special
                    meetings of         Pennsylvania law     meetings may be
                    shareholders may    for "registered      called by the:
                    be called by the    corporations"
                    board or by         such as CBS,
                    persons             special meetings
                    authorized to do    of shareholders
                    so in the           may be called
                    certificate of      only by the
                    incorporation or    board, or by the
                    by-laws.            officers or other
                                        persons, if any,
                                        provided in the
                                        by-laws, except
                                        that an
                                        Interested
                                        Shareholder (as
                                        defined below for
                                        purposes of the
                                        business
                                        combination
                                        moratorium under
                                        "Anti-Takeover
                                        Provisions") can
                                        call a special
                                        meeting to
                                        approve certain
                                        business
                                        combinations.

                                                             . majority of the
                                                               board;

                                                             . chairman of the
                                                               board;

                                                             . chief executive
                                                               officer;


                    Under Viacom's
                    By-laws, special                         . vice chairman
                    meetings of                                of the board;
                    shareholders of
                    Viacom may be
                    called by the:

                                                             . president and
                                                               chief operating
                                                               officer; or


                    . majority of the
                      board;                                 . chairman of the
                                                               board, chief
                                                               executive
                                                               officer, the
                                                               vice chairman
                                                               of the board,
                                                               the president
                                                               and chief
                                                               operating
                                                               officer or the
                                                               secretary at
                                                               the request of
                                                               at least 50.1%
                                                               of Viacom's
                                                               Class A common
                                                               stock.

                    . chairman of the
                      board;

                    . vice chairman
                      of the board;

                    . president; or


                    . chairman of the   Under CBS' By-
                      board, vice       laws, special
                      chairman of the   meetings of
                      board,            shareholders of
                      president or      CBS may be called
                      secretary at      only by:
                      the request of
                      at least 50.1%
                      of Viacom's
                      Class A common
                      stock.

                                        . the CBS Board;
                                          or

                                        . the chairman of
                                          the Board.

                    Under Viacom's
                    By-laws, the only
                    business that may
                    be conducted at a
                    special meeting
                    is the business
                    stated in the
                    notice of that
                    special meeting.

                                        Under CBS' By-
                                        laws, the only
                                        business that may
                                        be conducted at a
                                        special meeting
                                        is the business
                                        stated in the
                                        notice of that
                                        special meeting
                                        delivered at the
                                        direction of the
                                        CBS Board or the
                                        chairman of the
                                        Board and matters
                                        which are
                                        incidental or
                                        germane thereto.

- --------------------------------------------------------------------------------

                                      109
<PAGE>

- --------------------------------------------------------------------------------
                                                              Combined Company
   Shareholder      Viacom Before the     CBS Before the         Shareholder
      Rights              Merger              Merger               Rights
- --------------------------------------------------------------------------------



Amendment to By-    Delaware law        Pennsylvania law     Under Viacom's
laws..............  provides that the   provides that the    proposed new
                    by-laws may be      by-laws may be       Restated
                    amended by an       amended by an        Certificate of
                    action of the       action of the        Incorporation,
                    shareholders.       shareholders. The    during the three-
                    However, the        by-laws may also     year period
                    certificate of      give the power to    following the
                    incorporation may   amend the by-laws    merger, any
                    also give the       to the board.        provisions of
                    power to amend                           Article VIII of
                    the by-laws to                           Viacom's By-laws,
                    the board.                               which states that
                                                             the By-laws are
                                                             subject to
                                                             Article XIII of
                                                             the proposed new
                                                             Restated
                                                             Certificate of
                                                             Incorporation,
                                                             which contain the
                                                             principal
                                                             provisions
                                                             setting forth the
                                                             corporate
                                                             governance
                                                             requirements
                                                             relating to the
                                                             merger, may not
                                                             be amended,
                                                             repealed or
                                                             waived by
                                                             Viacom's board
                                                             without the
                                                             approval of at
                                                             least 14
                                                             directors.

                                        Pennsylvania law
                                        limits the
                                        board's power to
                                        amend the by-
                                        laws, however, in
                                        respect to
                                        certain matters,
                                        unless allowed by
                                        the articles of
                                        incorporation.

                    Viacom's Restated
                    Certificate of
                    Incorporation
                    allows the board
                    to repeal, alter
                    or amend the by-
                    laws by majority
                    vote.

                                        Under CBS'
                                        Restated Articles
                                        of Incorporation
                                        and By-laws, CBS'
                                        shareholders may
                                        amend the By-laws
                                        with the
                                        affirmative vote
                                        of holders of at
                                        least 80% of the
                                        combined vote of
                                        the shares
                                        entitled to vote
                                        generally in an
                                        annual election.

                                        Also, CBS'
                                        Restated Articles
                                        of Incorporation
                                        and By-laws allow
                                        the board to
                                        repeal, alter or
                                        amend the By-laws
                                        by majority vote
                                        of the entire
                                        board.

- --------------------------------------------------------------------------------

                                      110
<PAGE>

- --------------------------------------------------------------------------------
                                                              Combined Company
   Shareholder      Viacom Before the     CBS Before the         Shareholder
      Rights              Merger              Merger               Rights
- --------------------------------------------------------------------------------
Amendments to
certificate of
incorporation.....  Under Delaware      Under                Under Viacom's
                    law, any            Pennsylvania law,    proposed new
                    provision of the    an amendment to      Restated
                    certificate of      the articles of      Certificate of
                    incorporation may   incorporation        Incorporation,
                    be amended by the   requires the         during the three-
                    approval of the     approval of the      year period
                    board and the       board and, except    following the
                    affirmative vote    in limited cases     merger, any
                    of a majority of    where a greater      provisions of
                    the holders of      vote may be          Viacom's proposed
                    the combined        required, the        new Restated
                    voting power of     affirmative vote     Certificate of
                    the outstanding     of a majority of     Incorporation
                    stock entitled to   the votes cast by    which refer to
                    vote, and a         all shareholders     Article VIII of
                    majority of each    entitled to vote     Viacom's By-laws
                    class entitled to   on the matter and    and the
                    vote as a class.    the affirmative      provisions of
                                        vote of a            Article XIII of
                                        majority of the      the proposed new
                                        votes cast by all    Restated
                                        shareholders         Certificate of
                                        within each class    Incorporation,
                                        or series of         which contain the
                                        shares if such       principal
                                        class or series      provisions
                                        of shares is         setting forth the
                                        entitled to vote     corporate
                                        on the matter as     governance
                                        a class.             arrangements
                                                             following the
                                                             merger, may not
                                                             be amended,
                                                             repealed or
                                                             waived without
                                                             the approval of
                                                             at least 14
                                                             directors.

                    Viacom's Restated
                    Certificate of
                    Incorporation
                    provides that
                    amendments to the
                    Restated
                    Certificate of
                    Incorporation may
                    be adopted as
                    allowed by
                    Delaware law.


                    No amendments to    Also,
                    the Restated        Pennsylvania law
                    Certificate of      provides that
                    Incorporation       shareholders of a
                    require a           registered
                    supermajority       corporation, such
                    vote.               as CBS, are not
                                        entitled to
                                        propose
                                        amendments to the
                                        articles of
                                        incorporation.

                                        Amendments to
                                        some provisions
                                        of the CBS
                                        Restated Articles
                                        of Incorporation
                                        require the
                                        approval of
                                        holders of at
                                        least 80% of the
                                        combined vote of
                                        the shares
                                        entitled to vote
                                        generally in an
                                        annual election,
                                        and certain other
                                        amendments
                                        require such vote
                                        unless first
                                        recommended and
                                        approved by a
                                        majority of the
                                        entire board. See
                                        also "Approval of
                                        Certain
                                        Business
                                        Combinations With
                                        Affiliates" above
                                        for the required
                                        vote to amend
                                        that provision.

- --------------------------------------------------------------------------------

                                      111
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                                                              Combined Company
   Shareholder      Viacom Before the     CBS Before the         Shareholder
      Rights              Merger              Merger               Rights
- --------------------------------------------------------------------------------

Dividends.........  Under Delaware      Under
                    law, a              Pennsylvania law,    See "Viacom
                    corporation may     unless restricted    Before the
                    pay dividends out   by the by-laws, a    Merger."
                    of surplus or, if   corporation may
                    no surplus          pay dividends
                    exists, out of      unless the
                    net profits for     payment would
                    the fiscal year     leave the
                    in which the        corporation
                    dividends are       unable to pay its
                    declared and/or     debts as they
                    its preceding       become due in the
                    fiscal year.        usual course of
                    However,            business, or
                    dividends may not   unless the
                    be declared out     payment would
                    of net profits if   leave the
                    the capital of      corporation with
                    the corporation     total assets that
                    is less than the    were less than
                    aggregate amount    the sum of its
                    of capital          total liabilities
                    represented by      plus the amount
                    any issued and      that would be
                    outstanding         distributable
                    preferred stock.    upon dissolution
                                        to shareholders
                                        having senior
                                        rights.

- --------------------------------------------------------------------------------

Federal
Communications
Laws.........                           The CBS Restated
                    Viacom's Restated   Articles of          See "Viacom
                    Certificate of      Incorporation and    Before the
                    Incorporation       By-laws do not       Merger."
                    provides that it    contain special
                    may request         provisions with
                    certain             respect to
                    information from    compliance with
                    the shareholder     federal
                    or proposed         communications
                    shareholder in      laws.
                    order to
                    determine whether
                    ownership of
                    Viacom's Class A
                    or Class B common
                    stock is
                    inconsistent
                    with, or in
                    violation of, any
                    of the federal
                    communications
                    laws. If the
                    necessary
                    information is
                    not provided or
                    if Viacom finds
                    that the
                    ownership of its
                    Class A or Class
                    B common stock by
                    a shareholder or
                    proposed
                    shareholder is
                    inconsistent
                    with, or in
                    violation of, any
                    of the federal
                    communications
                    laws, Viacom may:

                    . refuse to
                      permit the
                      transfer of
                      shares of its

                                      112
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                                                              Combined Company
   Shareholder      Viacom Before the     CBS Before the         Shareholder
      Rights              Merger              Merger               Rights
- --------------------------------------------------------------------------------

                     Class A or Class
                     B common stock
                     to the proposed
                     person or
                     entity; or

                    . exercise any
                      and all
                      appropriate
                      remedies, at
                      law or in
                      equity, against
                      any shareholder
                      in order to
                      obtain the
                      necessary
                      information or
                      prevent or cure
                      any situation
                      which would
                      cause the
                      inconsistency
                      with, or
                      violation of,
                      the offending
                      provision of
                      the federal
                      communications
                      laws.

- --------------------------------------------------------------------------------

Conversion........  As long as 10,000   CBS' common stock
                    shares of           has no conversion    See "Viacom
                    Viacom's Class A    features.            Before the
                    common stock are                         Merger."
                    outstanding, each
                    record holder of
                    shares of Class A
                    or Class B common
                    stock may convert
                    any or all of
                    such shares into
                    an equal number
                    of shares of
                    Class B common
                    stock.

- --------------------------------------------------------------------------------

Committees........                      Under its By-        All Committees.
                    Under its By-       laws, CBS' board     Under Viacom's
                    laws, Viacom's      is required to       proposed new
                    board may create    create a             Restated
                    one or more         compensation         Certificate of
                    committees. Each    committee, an        Incorporation,
                    committee would     audit review         all committees,
                    consist of one or   committee and a      other than the
                    more of the         nominating and       compensation
                    directors of        governance           committee and the
                    Viacom.             committee. Each      officers
                                        of these             nominating
                                        committees shall     committee, must
                                        consist of not       have the same
                                        less than two        proportion of CBS
                                        members of the       and Viacom
                                        board, at least      directors as the
                                        two of whom are      full Viacom board
                                        required to be       has, with a
                                        independent          minimum of one
                                        directors on the     CBS director on
                                        date of their        each committee.
                                        appointment. CBS'
                                        By-laws require
                                        that all members
                                        of the
                                        compensation
                                        committee and the
                                        nominating and

                                                             Officers
                                                             Nominating
                                                             Committee. Under
                                                             Viacom's proposed
                                                             new

                                      113
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                                                              Combined Company
   Shareholder      Viacom Before the     CBS Before the         Shareholder
      Rights              Merger              Merger               Rights
- --------------------------------------------------------------------------------

                                        governance           Restated
                                        committee be         Certificate of
                                        independent          Incorporation,
                                        directors on the     Viacom will have
                                        date of their        an officers
                                        appointment. The     nominating
                                        CBS board can        committee and Mr.
                                        also create          Karmazin will be
                                        additional           the only member
                                        standing or          of this
                                        special              committee. This
                                        committees of one    committee will
                                        or more members.     have the powers
                                                             to hire, elect,
                                                             terminate, change
                                                             positions,
                                                             allocate
                                                             responsibilities
                                                             or determine non-
                                                             equity
                                                             compensations,
                                                             with respect to
                                                             the officers and
                                                             employees.
                                                             However, this
                                                             committee will
                                                             not have these
                                                             powers with
                                                             respect to the
                                                             chairman, the
                                                             chief executive
                                                             officer and the
                                                             chief operating
                                                             officer.

                                                             This committee
                                                             will not have the
                                                             power to fill the
                                                             positions of the
                                                             chief financial
                                                             officer,
                                                             controller and
                                                             general counsel
                                                             without the
                                                             approval of the
                                                             board. However,
                                                             this committee
                                                             will have all of
                                                             the other powers
                                                             delegated to it
                                                             for other
                                                             officers with
                                                             respect to the
                                                             chief financial
                                                             officer,
                                                             controller and
                                                             general counsel,
                                                             including the
                                                             power to
                                                             terminate
                                                             employment of
                                                             persons holding
                                                             those positions.

                                                             Any decision of
                                                             this committee
                                                             can be
                                                             overridden by the
                                                             affirmative vote
                                                             of at least 14
                                                             directors.

                                      114
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                                                              Combined Company
   Shareholder      Viacom Before the     CBS Before the         Shareholder
      Rights              Merger              Merger               Rights
- --------------------------------------------------------------------------------


                                                             Compensation
                                                             Committee. Under
                                                             Viacom's proposed
                                                             new Restated
                                                             Certificate of
                                                             Incorporation,
                                                             this committee
                                                             shall consist of
                                                             three CBS
                                                             directors who are
                                                             independent
                                                             directors and
                                                             three directors
                                                             who are not CBS
                                                             directors. Of the
                                                             three non-CBS
                                                             directors, two
                                                             will be persons
                                                             who were first
                                                             elected as
                                                             directors of
                                                             Viacom after 1993
                                                             and who are not
                                                             management of
                                                             Viacom or
                                                             National
                                                             Amusements and
                                                             the third will be
                                                             a disinterested
                                                             independent
                                                             director.

                                                             This committee
                                                             must approve the
                                                             annual
                                                             compensation of
                                                             all other
                                                             officers and
                                                             employees and any
                                                             equity or equity-
                                                             based
                                                             compensation of
                                                             any officer or
                                                             employee.
                                                             However, this
                                                             committee will
                                                             not have the
                                                             power to approve
                                                             the annual
                                                             compensation of:
                                                             . any employee if
                                                               the total value
                                                               of such
                                                               employee's
                                                               annual cash
                                                               compensation is
                                                               less than $1
                                                               million; or
                                                             . any talent, as
                                                               such term is
                                                               commonly used
                                                               in the media or
                                                               entertainment
                                                               industries.
                                                             These powers will
                                                             be delegated to
                                                             the officers
                                                             nominating
                                                             committee.
                                                             Generally, for a
                                                             period of three
                                                             years following
                                                             the merger, these
                                                             provisions cannot
                                                             be changed
                                                             without the
                                                             approval of at
                                                             least 14
                                                             directors.

- --------------------------------------------------------------------------------

                                      115
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                                                              Combined Company
   Shareholder      Viacom Before the     CBS Before the         Shareholder
      Rights              Merger              Merger               Rights
- --------------------------------------------------------------------------------

- --------------------------------------------------------------------------------

Officers..........                      Under its By-        Chairman and
                    Under Viacom's      laws, CBS' board     Chief Executive
                    By-laws, Viacom's   shall elect a        Officer. Under
                    board shall elect   chairman, who may    Viacom's proposed
                    a president, a      be designated an     new Restated
                    treasurer and a     officer of CBS, a    Certificate of
                    secretary. The      president or a       Incorporation,
                    board may also      chief executive      Sumner Redstone
                    elect a chairman,   officer or both,     will serve as
                    one or more vice    such vice            chairman and
                    chairmen and vice   presidents as may    chief executive
                    presidents and      from time to time    officer of Viacom
                    one or more         be necessary or      and Mel Karmazin
                    assistant           desirable, a         will serve as
                    treasurers and      secretary and a      president and
                    assistant           treasurer. There     chief operating
                    secretaries. Any    shall also be one    officer of
                    number of offices   or more assistant    Viacom. If Mr.
                    may be held by      secretaries and      Redstone is not
                    the same person,    treasurers and       the chief
                    except the          such other           executive officer
                    offices of          officers and         at the effective
                    president and       assistant            time of the
                    secretary. Vice     officers as the      merger or ceases
                    presidents may be   board may deem       to be the chief
                    given distinctive   appropriate. The     executive officer
                    designations such   board shall elect    at any time
                    as executive vice   all officers,        during the three-
                    president or        except assistant     year period
                    senior vice         officers. The        following the
                    president. The      term of office       merger, Mr.
                    board may elect     for all officers     Karmazin will
                    other officers      shall be until       become the chief
                    and agents as it    the organization     executive officer
                    deems necessary.    meeting of the       while retaining
                    The officers        board following      his title and
                    shall hold office   the next annual      responsibilities
                    until their         meeting of           as chief
                    successors are      shareholders and     operating
                    elected or          until their          officer. The
                    appointed and       respective           chief executive
                    qualify or until    successors are       officer shall be
                    their earlier       elected or           responsible, in
                    resignation or      appointed and        consultation with
                    removal. Any        shall qualify, or    the chief
                    officer elected     until their          operating
                    or appointed by     earlier death,       officer, for
                    the board may be    resignation or       corporate policy
                    removed at any      removal. The         and strategy and
                    time with or        chairman or any      the chief
                    without cause by    officer may be       operating officer
                    the affirmative     removed from         shall consult on
                    vote of a           office, either       all major
                    majority of the     with or without      decisions with,
                    whole board.        cause, at any        and shall report
                                        time by the          directly to, the
                                        affirmative vote     chief executive
                                        of the majority      officer. However,
                                        of the members of    unless Mr.
                                        the board then in    Karmazin is the
                                        office.              chief executive
                                                             officer, the
                                                             chief executive
                                                             officer will not
                                                             exercise any
                                                             powers, rights,
                                                             functions or
                                                             responsibilities
                                                             of the chief
                                                             operating
                                                             officer.

                                                             President and
                                                             Chief Operating
                                                             Officer. Under
                                                             Viacom's proposed
                                                             new

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                                                              Combined Company
   Shareholder      Viacom Before the     CBS Before the         Shareholder
      Rights              Merger              Merger               Rights
- --------------------------------------------------------------------------------

                                                             Restated
                                                             Certificate of
                                                             Incorporation,
                                                             Mr. Karmazin will
                                                             also serve as
                                                             president as well
                                                             as chief
                                                             operating
                                                             officer. Mr.
                                                             Karmazin may not
                                                             be terminated or
                                                             demoted from his
                                                             position as chief
                                                             operating officer
                                                             or chief
                                                             executive
                                                             officer, if he is
                                                             serving in that
                                                             capacity, and
                                                             none of his
                                                             functions as
                                                             chief operating
                                                             officer may be
                                                             changed without
                                                             the affirmative
                                                             vote of at least
                                                             14 directors.

                                                             The chief
                                                             operating officer
                                                             will:

                                                             . supervise,
                                                               coordinate and
                                                               manage Viacom's
                                                               business,
                                                               operations,
                                                               activities,
                                                               operating
                                                               expenses and
                                                               capital
                                                               allocation;

                                                             . handle matters
                                                               relating to
                                                               officers (other
                                                               than the chief
                                                               executive
                                                               officer and
                                                               chief operating
                                                               officer) and
                                                               employees
                                                               including
                                                               hiring,
                                                               terminating,
                                                               changing
                                                               positions and
                                                               allocating
                                                               responsibilities,
                                                               other than (a)
                                                               specific board
                                                               authority with
                                                               respect to the
                                                               chief financial
                                                               officer, the
                                                               general counsel
                                                               and the
                                                               controller and
                                                               (b) the
                                                               authority of
                                                               the officers
                                                               nominating
                                                               committee and
                                                               the
                                                               compensation
                                                               committee; and

                                                             . hold
                                                               substantially
                                                               all of the
                                                               powers, rights,
                                                               functions and

                                      117
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                                                              Combined Company
   Shareholder      Viacom Before the     CBS Before the         Shareholder
      Rights              Merger              Merger               Rights
- --------------------------------------------------------------------------------

                                                              responsibilities
                                                              typically
                                                              exercised by a
                                                              chief operating
                                                              officer.

                                                             All officers
                                                             (other than the
                                                             chairman, chief
                                                             executive officer
                                                             and chief
                                                             operating
                                                             officer) will
                                                             report, directly
                                                             or indirectly, to
                                                             the chief
                                                             operating
                                                             officer.

                                                             If Mr. Karmazin
                                                             is not the chief
                                                             operating officer
                                                             or chief
                                                             executive
                                                             officer, the
                                                             Viacom board may
                                                             terminate the
                                                             chief operating
                                                             officer,
                                                             eliminate that
                                                             position and the
                                                             officers
                                                             nominating
                                                             committee and
                                                             reallocate the
                                                             functions of
                                                             those positions
                                                             to whom the
                                                             officers will
                                                             report.

                                                             Vice Presidents,
                                                             Secretary,
                                                             Assistant
                                                             Secretary,
                                                             Treasurer and
                                                             Assistant
                                                             Treasurer. Under
                                                             Viacom's By-laws,
                                                             the president and
                                                             chief operating
                                                             officer may
                                                             assign additional
                                                             duties to the
                                                             vice presidents,
                                                             secretary,
                                                             assistant
                                                             secretary,
                                                             treasurer and
                                                             assistant
                                                             treasurer.
                                                             Generally, for a
                                                             period of three
                                                             years following
                                                             the merger, these
                                                             provisions cannot
                                                             be changed
                                                             without the
                                                             approval of at
                                                             least 14
                                                             directors.

- --------------------------------------------------------------------------------


                                      118
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                                                              Combined Company
   Shareholder      Viacom Before the     CBS Before the         Shareholder
      Rights              Merger              Merger               Rights
- --------------------------------------------------------------------------------

Shareholder         Under Delaware      Under
Action............  law, unless the     Pennsylvania law,    See "Viacom
                    certificate of      unless otherwise     Before the
                    incorporation       restricted by the    Merger."
                    provides            by-laws, a
                    otherwise, a        shareholder
                    shareholder         action may be
                    action may be       taken without a
                    taken if written    meeting upon the
                    consents are        unanimous written
                    received from the   consent of all of
                    holders of the      the shareholders
                    minimum number of   entitled to vote
                    votes that would    thereon.
                    be necessary to     Shareholders of a
                    authorize that      registered
                    action at a         corporation, such
                    meeting at which    as CBS, may
                    all the shares      authorize an
                    entitled to vote    action without a
                    for that action     meeting by less
                    were present and    than unanimous
                    voted. Viacom's     written consent
                    Restated            only if such
                    Certificate of      action without a
                    Incorporation       meeting is
                    does not restrict   permitted by the
                    the ability of      articles of
                    shareholders to     incorporation.
                    act by written      CBS' Restated
                    consent.            Articles of
                                        Incorporation do
                                        not provide for a
                                        partial written
                                        consent; and CBS'
                                        By-laws do not
                                        restrict
                                        shareholder
                                        action by
                                        unanimous written
                                        consent.

- --------------------------------------------------------------------------------

Notice of Some
Shareholder
Actions...........
                    Neither Viacom's    Under CBS' By-
                    Restated            laws, for            See "Viacom
                    Certificate of      nominations for      Before the
                    Incorporation nor   the election of      Merger."
                    its By-laws         directors to be
                    require             properly brought
                    shareholders to     by a shareholder
                    give Viacom         before an annual
                    advance notice of   meeting or a
                    director            special meeting
                    nominations or      at which
                    business to be      directors are to
                    presented at an     be elected
                    annual or general   pursuant to CBS'
                    shareholders'       notice of
                    meeting.            meeting, or for
                                        other business to
                                        be properly
                                        brought by a
                                        shareholder
                                        before an annual
                                        meeting, the
                                        shareholder must
                                        have given timely
                                        notice thereof in
                                        writing to CBS'
                                        secretary and the
                                        shareholder must
                                        be entitled by
                                        Pennsylvania law
                                        to present such

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                                                              Combined Company
   Shareholder      Viacom Before the     CBS Before the         Shareholder
      Rights              Merger              Merger               Rights
- --------------------------------------------------------------------------------

                                        business at the
                                        meeting and must
                                        be a shareholder
                                        of record at the
                                        time the required
                                        notice is given
                                        and at the time
                                        of the meeting.
                                        To be timely, a
                                        shareholder's
                                        notice must be
                                        delivered to CBS'
                                        secretary at CBS'
                                        principal
                                        executive
                                        offices:

                                        . in the case of
                                          an annual
                                          meeting, for
                                          receipt not
                                          less than 90
                                          days nor more
                                          than 120 days
                                          prior to the
                                          first
                                          anniversary of
                                          the preceding
                                          year's annual
                                          meeting
                                          (provided, if
                                          the date of the
                                          annual meeting
                                          is advanced
                                          more than 30
                                          days or delayed
                                          more than 90
                                          days from the
                                          anniversary
                                          date, the
                                          notice can be
                                          as late as the
                                          10th day
                                          following
                                          public
                                          announcement of
                                          the meeting
                                          date); and

                                        . with respect to
                                          the nomination
                                          of a person or
                                          persons for
                                          election to
                                          such
                                          position(s) as
                                          are specified
                                          in CBS' notice
                                          of meeting in
                                          the case of a
                                          special
                                          meeting, for
                                          receipt no more
                                          than 120 days
                                          prior to the
                                          date of such
                                          special meeting
                                          and no later
                                          than the 90th
                                          day prior to
                                          the date of
                                          such special
                                          meeting or the
                                          10th day
                                          following the
                                          day on which
                                          public
                                          announcement is
                                          first made of
                                          the date of the
                                          special meeting
                                          and of

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                                                              Combined Company
   Shareholder      Viacom Before the     CBS Before the         Shareholder
      Rights              Merger              Merger               Rights
- --------------------------------------------------------------------------------

                                         the nominees
                                         proposed by the
                                         board to be
                                         elected at such
                                         meeting.

                                        In no event will
                                        the public
                                        announcement of
                                        an adjournment or
                                        postponement of
                                        an annual or
                                        special meeting
                                        commence a new
                                        time period for
                                        the giving of a
                                        shareholder's
                                        notice. Such
                                        shareholder's
                                        notice shall
                                        include:

                                        . certain
                                          information
                                          relating to the
                                          relationship,
                                          if any, between
                                          the shareholder
                                          and the nominee
                                          being proposed,
                                          the nominee's
                                          written
                                          consent, and
                                          the information
                                          required to be
                                          disclosed under
                                          the Exchange
                                          Act;

                                        . a brief
                                          description of
                                          the business
                                          desired to be
                                          brought before
                                          the meeting and
                                          the reasons
                                          therefor and
                                          any material
                                          interest of the
                                          shareholder and
                                          the beneficial
                                          owner therein;
                                          and

                                        . as to the
                                          shareholder
                                          giving the
                                          notice and as
                                          to the
                                          beneficial
                                          owner, if
                                          different from
                                          the shareholder
                                          giving notice,
                                          on whose behalf
                                          the nomination
                                          or proposal is
                                          made, the name
                                          and address and
                                          number of
                                          shares held by
                                          the shareholder
                                          and beneficial
                                          owner, and a
                                          representation
                                          by the

                                      121
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                                                              Combined Company
   Shareholder      Viacom Before the     CBS Before the         Shareholder
      Rights              Merger              Merger               Rights
- --------------------------------------------------------------------------------

                                         shareholder as
                                         to the intent to
                                         hold such shares
                                         until the
                                         meeting and to
                                         attend the
                                         meeting and make
                                         the proposal.

- --------------------------------------------------------------------------------

Shareholder
Appraisal
Rights............  Delaware law          Pennsylvania law
                    provides for          provides, with     See "Viacom
                    appraisal rights      certain            Before the
                    on the part of        exceptions, that   Merger."
                    the shareholders      shareholders of a
                    of a corporation      corporation have
                    only in the case      a right to
                    of certain            dissent from a
                    mergers or            proposed
                    consolidations        transaction and
                    and not in the        to obtain payment
                    case of other         of the judicially
                    mergers, sales or     determined "fair
                    transfers of all      value" of their
                    or substantially      shares in a
                    all of a              merger,
                    corporation's         consolidation,
                    assets or             division, share
                    amendments to a       exchange or
                    corporation's         conversion, in
                    certificate of        certain asset
                    incorporation.        transfers, in
                    Moreover, unless      transactions
                    the certificate       where the board
                    of incorporation      grants dissenters
                    so provides,          rights, and in
                    Delaware law does     certain other
                    not provide for       plans or
                    appraisal rights      amendments to the
                    in connection         articles of
                    with a merger or      incorporation in
                    consolidation for     which disparate
                    stock listed on a     treatment is
                    national              given to the
                    securities            holders of shares
                    exchange or           of the same class
                    designated as a       or series unless
                    national market       each group has
                    system security       approved by a
                    on the Nasdaq         special class
                    stock market or       vote. These
                    held of record by     dissenters'
                    more than 2,000       rights are not
                    shareholders,         available,
                    unless the            however, for any
                    agreement of          class of stock
                    merger or             that is either
                    consolidation         listed on a
                    requires the          national
                    holders of the        securities
                    stock to receive,     exchange or held
                    in exchange for       of record by more
                    their shares, any     than 2,000
                    property other        shareholders (as
                    than shares of        is the case with
                    stock of the          CBS common stock)
                    surviving             unless (a) the
                    corporation,          shares are not
                    shares of stock       converted solely
                    of any other          into shares of
                    corporation           the acquiring,
                    listed on a           surviving, new or
                    national              other
                    securities            corporation, or
                    exchange or           solely into
                    designated as a
                    national market
                    system security
                    on the Nasdaq

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                                                              Combined Company
   Shareholder      Viacom Before the     CBS Before the         Shareholder
      Rights              Merger              Merger               Rights
- --------------------------------------------------------------------------------

                    stock market or     such shares
                    held of record by   combined with
                    more than 2,000     cash for any
                    holders, cash       fractional
                    instead of          shares; (b) the
                    fractional shares   shares being
                    or any              converted are
                    combination of      shares of any
                    the foregoing.      preferred or
                    Viacom's Restated   special class of
                    Certificate of      stock, unless the
                    Incorporation       articles of
                    does not provide    incorporation,
                    for appraisal       the plan, or the
                    rights in these     terms of the
                    circumstances. In   transaction
                    addition,           entitle all
                    Delaware law        holders of the
                    denies appraisal    shares of the
                    rights to the       preferred or
                    shareholders of     special class to
                    the surviving       vote on the
                    corporation in a    transaction and
                    merger if the       require the
                    merger did not      approval of the
                    require the         affirmative vote
                    approval of the     of a majority of
                    shareholders of     the votes cast by
                    the surviving       all shareholders
                    corporation.        of the preferred
                                        or special class;
                                        or (c) (1) the
                                        transaction
                                        provides for
                                        disparate
                                        treatment for
                                        shares of the
                                        same class or
                                        series, (2) the
                                        shares being
                                        converted are a
                                        group of a class
                                        or series of
                                        shares which are
                                        to receive the
                                        same special
                                        treatment in the
                                        transaction, and
                                        (3) the group is
                                        not entitled to
                                        vote as a special
                                        class for such
                                        transaction.


- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------


Fiduciary Duties
of Directors......
                    Under Delaware      Under
                    law, the business   Pennsylvania law,    See "Viacom
                    and affairs of a    directors have a     Before the
                    corporation are     fiduciary duty to    Merger."
                    managed by or       their corporation
                    under the           and are required
                    direction of its    to perform their
                    board. In           duties in good
                    exercising their    faith, in a
                    powers, directors   manner they
                    are charged with    reasonably
                    the fiduciary       believe to be in
                    duties of loyalty   the best
                    and care to both    interests of the
                    the corporation     corporation, and
                    and the             with the care,
                    shareholders. A     including
                    party challenging   reasonable
                    the decision of a   inquiry, skill
                    board generally     and diligence,
                    bears the burden    that a person of
                    of rebutting the    ordinary prudence
                    so-called           would use under
                    "business           similar
                    judgment rule,"     circumstances.

                                      123
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                                                              Combined Company
   Shareholder      Viacom Before the     CBS Before the         Shareholder
      Rights              Merger              Merger               Rights
- --------------------------------------------------------------------------------

                    a presumption       Directors, in
                    that, in making a   considering the
                    business            best interests of
                    decision,           their
                    directors acted     corporation, may,
                    on an informed      but are not
                    basis, in good      required to,
                    faith and in the    consider the
                    honest belief       effects of any
                    that the action     action upon
                    was taken in the    employees,
                    best interests of   suppliers and
                    the corporation.    customers of the
                    Unless this         corporation, and
                    presumption is      upon communities
                    rebutted, the       in which offices
                    business judgment   or other
                    exercised by        establishments of
                    directors in        the corporation
                    making their        are located and
                    decisions is not    all other
                    subject to          pertinent
                    judicial review.    factors. Under
                    To rebut this       Pennsylvania law,
                    presumption, a      absent a breach
                    party must          of fiduciary
                    demonstrate that,   duty, a lack of
                    in reaching their   good faith or
                    decision, the       self-dealing, any
                    directors           act of the board,
                    breached one or     a committee of
                    more of their       the board or an
                    fiduciary duties.   individual
                    If the              director is
                    presumption is so   presumed to be in
                    rebutted, the       the best
                    directors bear      interests of the
                    the burden of       corporation. The
                    demonstrating the   Pennsylvania
                    entire fairness     Supreme Court has
                    of the relevant     recognized the
                    transaction.        common law
                    Notwithstanding     "business
                    the foregoing,      judgment rule".
                    Delaware courts     Pennsylvania
                    may subject         courts have not
                    directors'          imposed any
                    defensive actions   heightened
                    taken in response   obligations on
                    to a threat to      directors to
                    corporate control   justify their
                    or their approval   conduct in the
                    of a change-of-     context of a
                    control             potential or
                    transaction to      proposed
                    enhanced scrutiny   acquisition of
                    and may require     control or
                    the directors to    required
                    maximize the        directors to
                    short-term          maximize the
                    financial           short-term
                    interests of        financial return
                    shareholders.       to shareholders.

- --------------------------------------------------------------------------------


                                      124
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                                                              Combined Company
   Shareholder      Viacom Before the     CBS Before the         Shareholder
      Rights              Merger              Merger               Rights
- --------------------------------------------------------------------------------

Limitation of         Delaware law        Under
Personal            permits a           Pennsylvania law,      See "Viacom
Liability of        corporation to      a corporation may    Before the
Directors.........  include in its      include in its       Merger."
                    certificate of      by-laws a
                    incorporation a     provision which
                    provision that      eliminates the
                    limits or           liability of its
                    eliminates the      directors for
                    liability of its    monetary damages
                    directors to the    for any action
                    corporation or      taken or the
                    its shareholders    failure to take
                    for monetary        any action,
                    damages arising     unless (a) the
                    from a breach of    directors have
                    fiduciary duty,     breached or
                    except under        failed to perform
                    certain             their duties and
                    circumstances.      (b) the breach or
                    Some of these       failure to
                    circumstances       perform
                    would include a     constitutes self-
                    breach of the       dealing, willful
                    duty of loyalty     misconduct or
                    to the              recklessness.
                    corporation or      However, a
                    its shareholders,   Pennsylvania
                    acts or omissions   corporation may
                    not in good faith   not eliminate the
                    or which involve    liability of
                    intentional         directors where
                    misconduct or a     the
                    knowing violation   responsibility or
                    of law, an          liability of a
                    unlawful            director arises
                    declartion of a     under any
                    declaration of a    criminal statute
                    dividend or         or is for the
                    unlawful            payment of
                    authorization of    federal, state or
                    the repurchase or   local taxes. CBS'
                    redemption of       Restated Articles
                    stock or any        of Incorporation
                    transaction from    and By-laws
                    which the           eliminate
                    director derived    director
                    an improper         liability to the
                    personal benefit.   fullest extent
                    Viacom's Restated   permitted by
                    Certificate of      Pennsylvania law.
                    Incorporation
                    eliminates
                    director
                    liability to the
                    fullest extent
                    permitted by
                    Delaware law.

- --------------------------------------------------------------------------------

                                      125
<PAGE>

- --------------------------------------------------------------------------------
                                                              Combined Company
   Shareholder      Viacom Before the     CBS Before the         Shareholder
      Rights              Merger              Merger               Rights
- --------------------------------------------------------------------------------

Indemnification       Under Delaware      The provisions       See "Viacom
of Directors and    law, a              of Pennsylvania      Before the
Officers..........  corporation may     law regarding        Merger."
                    indemnify a         indemnification
                    director or         are substantially
                    officer of the      similar to those
                    corporation         of Delaware law.
                    against expenses,   Unlike Delaware
                    including           law, however,
                    attorneys' fees,    Pennsylvania law
                    judgments, fines    expressly permits
                    and settlement      indemnification
                    amounts actually    in connection
                    and reasonably      with any action,
                    incurred in a       including a
                    civil or criminal   derivative
                    action, suit or     action, unless a
                    proceeding by       court determines
                    reason of being     that the acts or
                    or having been a    omissions giving
                    representative of   rise to the claim
                    or serving at the   constituted
                    request of the      willful
                    corporation. This   misconduct or
                    indemnification     recklessness.
                    is available if
                    the person acted
                    in good faith and
                    reasonably
                    believed that his
                    or her actions
                    were in or not
                    opposed to the
                    best interests of
                    the corporation
                    and, in a
                    criminal
                    proceeding, had
                    no reasonable
                    cause to believe
                    that his or her
                    conduct was
                    unlawful. In an
                    action brought by
                    or on behalf of
                    the corporation,
                    this
                    indemnification
                    is limited to
                    expenses
                    incurred.
                    Delaware law also
                    provides that a
                    corporation may
                    advance a
                    director,
                    officer, employee
                    or agent the
                    expenses incurred
                    in defending any
                    action, but that,
                    in the case of
                    advances to
                    directors or
                    officers the
                    corporation must
                    first receive an
                    undertaking from
                    the officer or
                    director to repay
                    the amount
                    advanced if it is
                    ultimately
                    determined that
                    the person is not

                                        CBS' Restated
                                        Articles of
                                        Incorporation and
                                        By-laws provide
                                        for broad
                                        indemnification
                                        of directors and
                                        officers.
                                        However, CBS' By-
                                        laws specifically
                                        state that there
                                        will be no
                                        indemnification
                                        where the
                                        indemnitee
                                        initiates the
                                        claim, except for
                                        a claim to
                                        enforce by-law
                                        indemnification
                                        rights. The By-
                                        laws provide for
                                        the advancement
                                        of certain
                                        expenses if the
                                        person seeking
                                        indemnification
                                        agrees to repay
                                        all amounts
                                        advanced if it is
                                        later determined
                                        that such person
                                        is not entitled
                                        to be indemnified
                                        pursuant to the
                                        By-laws against
                                        such expenses.

                                      126
<PAGE>

- --------------------------------------------------------------------------------
                                                              Combined Company
   Shareholder      Viacom Before the     CBS Before the         Shareholder
      Rights              Merger              Merger               Rights
- --------------------------------------------------------------------------------

                    entitled to
                    indemnification.
                    A determination
                    of the amount of
                    the
                    indemnification
                    to be paid in any
                    circumstance must
                    be made by a
                    majority of the
                    directors who are
                    not parties to
                    the action, even
                    though less than
                    a quorum, by a
                    committee of such
                    disinterested
                    directors or, if
                    there are no such
                    directors or if
                    such directors so
                    direct, by
                    independent legal
                    counsel. No
                    indemnification
                    for expenses in
                    derivative
                    actions is
                    permitted under
                    Delaware law if
                    the person is
                    found to be
                    liable to the
                    corporation,
                    unless a court
                    finds him or her
                    entitled to such
                    indemnification.
                    If, however, that
                    person is
                    successful, on
                    the merits or
                    otherwise, in
                    defending a
                    third-party or
                    derivative
                    action,
                    indemnification
                    for expenses
                    incurred is
                    mandatory. The
                    indemnification
                    provisions of
                    Delaware law are
                    not exclusive of
                    any other rights
                    to which the
                    party may be
                    entitled under
                    any by-law,
                    agreement or vote
                    of shareholders
                    or disinterested
                    directors.

                    Viacom's Restated
                    Certificate of
                    Incorporation
                    provides for
                    mandatory
                    indemnification
                    of its directors,
                    officers,
                    employees or
                    agents to the
                    fullest extent
                    provided

                                      127
<PAGE>

- --------------------------------------------------------------------------------
                                                              Combined Company
   Shareholder      Viacom Before the     CBS Before the         Shareholder
      Rights              Merger              Merger               Rights
- --------------------------------------------------------------------------------

                    by law. However,
                    Viacom will not
                    indemnify a
                    person who was
                    adjudged to be
                    liable to Viacom,
                    unless the court
                    decides that such
                    person is
                    entitled to
                    Viacom's
                    indemnity.
                    Viacom's Restated
                    Certificate of
                    Incorporation
                    provides for the
                    advancement of
                    expenses for its
                    directors and
                    officers if they
                    agree to repay
                    all amounts
                    advanced if it is
                    later ultimately
                    determined that
                    they are not
                    entitled to be
                    indemnified. In
                    addition,
                    Viacom's Restated
                    Certificate of
                    Incorporation
                    provides for the
                    advancement of
                    expenses for its
                    employees and
                    agents as Viacom
                    deems it
                    appropriate.

- --------------------------------------------------------------------------------

Anti-Takeover
Provisions........
                    Under Delaware      Pennsylvania law     See "Viacom
                    law, a              contains several     Before the
                    corporation is      anti-takeover        Merger".
                    prohibited from     provisions which
                    engaging in any     apply to
                    "business           registered
                    combination" with   corporations such
                    an "interested      as CBS.
                    shareholder,"
                    which is defined
                    as a person who,
                    together with
                    affiliates or
                    associates, owns,
                    or within a
                    three-year period
                    did own, 15% or
                    more of the
                    corporation's
                    voting stock for
                    a period of three
                    years following
                    the date on which
                    the shareholder
                    became an
                    interested
                    shareholder,
                    unless:

                                        Transactions with
                                        Interested
                                        Shareholders.
                                        Pennsylvania law
                                        provides that the
                                        types of
                                        transactions
                                        listed below must
                                        be approved by
                                        the affirmative
                                        vote of at least
                                        a majority of the
                                        votes that all
                                        shareholders are
                                        entitled to cast
                                        with respect to
                                        such transaction,
                                        excluding all
                                        voting shares
                                        owned by an
                                        interested
                                        shareholder. An
                                        interested
                                        shareholder

                    . the certificate
                      of
                      incorporation
                      provides
                      otherwise;

                                      128
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- --------------------------------------------------------------------------------
                                                              Combined Company
   Shareholder      Viacom Before the     CBS Before the         Shareholder
      Rights              Merger              Merger               Rights
- --------------------------------------------------------------------------------

                                        generally means,
                    . prior to the      for purposes of
                      date on which     this provision, a
                      the person        shareholder who
                      became an         is a party to the
                      interested        transaction or
                      shareholder,      who is treated
                      the board         differently from
                      approved either   other
                      the business      shareholders,
                      combination or    together with
                      the transaction   their affiliates
                      which resulted    and persons
                      in the            acting jointly or
                      shareholder       in concert with
                      becoming an       them. The
                      interested        following types
                      shareholder;      of transactions
                                        require the
                                        special vote
                                        described above:

                    . the interested
                      shareholder
                      owned 85% or
                      more of the
                      voting stock of
                      the
                      corporation,
                      excluding
                      specified
                      shares, upon
                      completion of
                      the transaction
                      as the result
                      of which the
                      person became
                      an interested
                      shareholder; or

                                        . a merger or
                                          consolidation,
                                          a share
                                          exchange or
                                          certain sales
                                          of assets
                                          between a
                                          corporation or
                                          its subsidiary
                                          and a
                                          shareholder of
                                          the
                                          corporation;

                                        . a division of
                                          the
                                          corporation, if
                                          an interested
                                          shareholder is
                                          to receive a
                                          disproportionate
                                          amount of any
                                          of the
                                          securities of
                                          any corporation
                                          surviving or
                                          resulting from
                                          the division;

                    . on or after the
                      date on which
                      such person
                      became an
                      interested
                      shareholder,
                      the business
                      combination is
                      approved by the
                      board and the
                      affirmative
                      vote, at a
                      special meeting
                      and not by
                      written
                      consent, of at
                      least 66 2/3%
                      of the
                      outstanding
                      voting shares
                      of the
                      corporation,
                      excluding
                      shares held by
                      such interested
                      shareholder.

                                        . a voluntary
                                          dissolution of
                                          the
                                          corporation, if
                                          any shareholder
                                          is to be
                                          treated
                                          differently
                                          from others
                                          holding shares
                                          of the same
                                          class (other
                                          than
                                          dissenters'
                                          rights); or

                    A "business
                    combination"
                    includes:

                                        . a
                                          reclassification,
                                          if any
                                          shareholder's
                                          percentage of
                                          voting or
                                          economic share
                                          interest in the
                                          corporation is
                                          materially
                                          increased
                                          relative to
                                          substantially
                                          all other
                                          shareholders.

                    . mergers,
                      consolidations
                      and sales or
                      other
                      dispositions of
                      10% or more of
                      the assets of a
                      corporation to
                      or with an
                      interested
                      shareholder;

                                        The special
                                        voting
                                        requirement with
                                        respect

                                      129
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- --------------------------------------------------------------------------------
                                                              Combined Company
   Shareholder      Viacom Before the     CBS Before the         Shareholder
      Rights              Merger              Merger               Rights
- --------------------------------------------------------------------------------

                    . certain           to the above
                      transactions      types of
                      resulting in      transactions does
                      the issuance or   not apply if:
                      transfer to an
                      interested        . the proposed
                      shareholder of      transaction has
                      any stock of        been approved
                      such                by a majority
                      corporation or      of the
                      its                 corporation's
                      subsidiaries;       board,
                      and                 excluding
                                          directors
                                          affiliated with
                                          or nominated by
                                          the interested
                                          shareholder;

                    . other
                      transactions
                      resulting in a
                      disproportionate
                      financial
                      benefit to an
                      interested        . the
                      shareholder.        consideration
                                          received for
                                          each class of
                                          stock owned by
                                          the interested
                                          shareholder is
                                          at least as
                                          high as the
                                          highest
                                          consideration
                                          paid for that
                                          class by the
                                          interested
                                          shareholder; or

                    Delaware law does
                    not contain a
                    "control-share
                    acquisition"
                    statute similar
                    to that contained
                    in Pennsylvania
                    law.
                                        . the transaction
                                          is a merger or
                                          consolidation
                                          involving a
                                          parent
                                          corporation
                                          which owns at
                                          least 80% of
                                          each class of
                                          the stock of
                                          each other
                                          constituent
                                          party.

                                        Business
                                        Combination
                                        Moratorium.
                                        Pennsylvania law
                                        provides for a
                                        five-year
                                        moratorium on
                                        business
                                        combinations with
                                        a registered
                                        corporation by an
                                        interested
                                        shareholder after
                                        the date such
                                        person first
                                        becomes an
                                        interested
                                        shareholder. For
                                        this purpose,
                                        interested
                                        shareholder
                                        generally means a
                                        person or group
                                        of persons acting
                                        in concert who
                                        owns stock with
                                        20% or more of
                                        the combined vote
                                        of shares
                                        entitled to elect
                                        directors or who
                                        held such amount
                                        in the

                                      130
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- --------------------------------------------------------------------------------
                                                              Combined Company
   Shareholder      Viacom Before the     CBS Before the         Shareholder
      Rights              Merger              Merger               Rights
- --------------------------------------------------------------------------------

                                        last five years
                                        and is still an
                                        affiliate.

                                        Following the
                                        expiration of the
                                        five-year
                                        moratorium, a
                                        business
                                        combination with
                                        that interested
                                        shareholder must
                                        be approved by
                                        either:

                                        . a majority of
                                          the shares not
                                          held by the
                                          interested
                                          shareholder or
                                          its affiliates
                                          and associates;
                                          or

                                        . a majority of
                                          the shares cast
                                          including those
                                          shares held by
                                          the interested
                                          shareholder,
                                          and the
                                          business
                                          combination (a)
                                          must meet
                                          certain fair
                                          price criteria
                                          and (b) the
                                          interested
                                          shareholder
                                          cannot have
                                          increased its
                                          holdings during
                                          the five-year
                                          period.

                                        "Business
                                        combinations"
                                        include:

                                        . mergers,
                                          consolidations,
                                          share exchanges
                                          or divisions of
                                          a registered
                                          corporation or
                                          its subsidiary:
                                          with an
                                          interested
                                          shareholder; or
                                          with, involving
                                          or resulting in
                                          any other
                                          corporation
                                          which is, or
                                          after such
                                          merger,
                                          consolidation,
                                          share exchange
                                          or division
                                          would be, an
                                          affiliate or
                                          associate of
                                          such interested
                                          shareholder;

                                        . a sale, lease,
                                          exchange,
                                          mortgage,
                                          pledge,
                                          transfer or
                                          other

                                      131
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                                                              Combined Company
   Shareholder      Viacom Before the     CBS Before the         Shareholder
      Rights              Merger              Merger               Rights
- --------------------------------------------------------------------------------

                                         disposition to
                                         or with an
                                         interested
                                         shareholder or
                                         any affiliate or
                                         associate of an
                                         interested
                                         shareholder of
                                         assets of the
                                         corporation or
                                         any subsidiary
                                         having a value
                                         equal to at
                                         least 10% of (a)
                                         the assets, (b)
                                         all the
                                         outstanding
                                         shares or (c)
                                         the earning
                                         power or net
                                         income on a
                                         consolidated
                                         basis, of such
                                         registered
                                         corporation or
                                         its subsidiary;

                                        . the adoption of
                                          a plan of
                                          liquidation or
                                          dissolution
                                          proposed by the
                                          interested
                                          shareholder or
                                          its affiliates
                                          or associates;
                                          and

                                        . other specified
                                          self-dealing
                                          transactions
                                          between such
                                          registered
                                          corporation and
                                          an interested
                                          shareholder or
                                          any affiliate
                                          or associate
                                          thereof.

                                        The five-year
                                        moratorium does
                                        not apply to:

                                        . business
                                          combinations
                                          with persons
                                          who became
                                          interested
                                          shareholders
                                          with the prior
                                          approval of the
                                          board;

                                        . business
                                          combinations
                                          that were
                                          approved by the
                                          board prior to
                                          the date on
                                          which the
                                          shareholder
                                          became an
                                          interested
                                          shareholder;

                                      132
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                                                              Combined Company
   Shareholder      Viacom Before the     CBS Before the         Shareholder
      Rights              Merger              Merger               Rights
- --------------------------------------------------------------------------------


                                        . business
                                          combinations
                                          approved by all
                                          of the holders
                                          of the
                                          outstanding
                                          common shares;
                                          and

                                        . business
                                          combinations
                                          approved by a
                                          majority of the
                                          voting shares,
                                          not including
                                          any voting
                                          shares
                                          beneficially
                                          owned by the
                                          interested
                                          shareholder or
                                          any affiliate
                                          or associate of
                                          the interested
                                          shareholder, at
                                          a meeting
                                          called for such
                                          purpose no
                                          earlier than
                                          three months
                                          after the date
                                          the interested
                                          shareholder
                                          became the
                                          beneficial
                                          owner of 80% of
                                          the voting
                                          shares,
                                          provided that
                                          the interested
                                          shareholder
                                          continues to
                                          beneficially
                                          own 80% of the
                                          voting shares
                                          at the time of
                                          such meeting
                                          and certain
                                          fair price
                                          criteria are
                                          met and the
                                          interested
                                          shareholder has
                                          not increased
                                          its holdings.

                                        Shareholder Right
                                        to Have Shares
                                        Purchased in
                                        Control
                                        Transactions.
                                        Under
                                        Pennsylvania law,
                                        when a person or
                                        group of persons
                                        acting together
                                        holds 20% of the
                                        shares entitled
                                        to vote in the
                                        election of
                                        directors, any
                                        other holder of
                                        voting shares of
                                        the registered
                                        corporation who
                                        objects can,
                                        within a
                                        reasonable

                                      133
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- --------------------------------------------------------------------------------
                                                              Combined Company
   Shareholder      Viacom Before the     CBS Before the         Shareholder
      Rights              Merger              Merger               Rights
- --------------------------------------------------------------------------------

                                        time after the
                                        control person or
                                        group of persons
                                        acquires the 20%
                                        stake, require
                                        the control group
                                        to purchase his
                                        or her shares at
                                        a fair value.
                                        Fair value is
                                        defined as not
                                        less than the
                                        highest price per
                                        share paid by the
                                        control person at
                                        any time during
                                        the 90-day period
                                        ending on the
                                        date of the
                                        control
                                        transaction plus
                                        any value,
                                        including any
                                        value paid or
                                        payable for the
                                        acquisition of
                                        control, that may
                                        not be reflected
                                        in such price.

- --------------------------------------------------------------------------------

Rights Plan.......  Viacom does not     On December 29,
                    have a rights       1995, the board      See "Viacom
                    plan.               of directors of      Before the
                                        CBS adopted a        Merger."
                                        shareholder
                                        rights plan
                                        providing for the
                                        distribution of
                                        one right for
                                        each share of its
                                        common stock
                                        outstanding on
                                        January 9, 1996
                                        or issued
                                        thereafter until
                                        the occurrence of
                                        certain events.
                                        The rights become
                                        exercisable only
                                        in the event,
                                        with certain
                                        exceptions, that
                                        an acquiring
                                        party accumulates
                                        15% or more of
                                        CBS' voting stock
                                        or a party
                                        announces an
                                        offer to acquire
                                        30% or more of
                                        CBS' voting
                                        stock. The rights
                                        will not become
                                        exercisable as a
                                        result of the
                                        merger because of
                                        prior approval of
                                        the merger by the
                                        board of
                                        directors of CBS.
                                        The rights
                                        initially have an
                                        exercise price of
                                        $64 per share and
                                        expire on

                                      134
<PAGE>

- --------------------------------------------------------------------------------
                                                              Combined Company
   Shareholder      Viacom Before the     CBS Before the         Shareholder
      Rights              Merger              Merger               Rights
- --------------------------------------------------------------------------------

                                        January 9, 2006;
                                        however, the CBS
                                        Board has adopted
                                        a resolution
                                        affirming its
                                        intention to
                                        redeem the rights
                                        in January 2001
                                        if still
                                        outstanding. Upon
                                        the occurrence of
                                        certain events,
                                        holders of the
                                        rights will be
                                        entitled to
                                        purchase either
                                        CBS preferred
                                        shares or shares
                                        in an acquiring
                                        entity at half of
                                        market value. CBS
                                        is entitled to
                                        redeem the rights
                                        at a value of
                                        $.01 per right at
                                        any time until
                                        the tenth day
                                        following the
                                        acquisition of a
                                        15% position in
                                        its voting stock.

- --------------------------------------------------------------------------------

Rights of           Under Delaware      Under
Inspection........  law, every          Pennsylvania law     See "Viacom
                    shareholder, upon   every                Before the
                    proper written      shareholder, upon    Merger."
                    demand stating      proper written
                    the purpose, may    demand stating
                    inspect the         the purpose, may
                    corporate books     inspect the
                    and records as      corporate books
                    long as the         and records as
                    inspection is for   long as the
                    a proper purpose    inspection is for
                    and during normal   a proper purpose
                    business hours. A   and during normal
                    "proper purpose"    business hours. A
                    is any purpose      "proper purpose"
                    reasonably          is any purpose
                    related to the      reasonably
                    interest of the     related to the
                    inspecting person   interest of the
                    as a shareholder.   inspecting person
                                        as a shareholder.

- --------------------------------------------------------------------------------

Liquidation         The rights of the   Holders of shares
Rights............  holders of shares   of CBS' common       See "Viacom
                    of Viacom's         stock upon the       Before the
                    common stock upon   liquidation or       Merger."
                    the liquidation     dissolution of
                    or dissolution of   CBS have the
                    Viacom are          right to receive
                    substantially the   (on a parity with
                    same as those of    any preferred
                    the holders of      stock ranking on
                    shares of CBS'      a parity with the
                    common stock upon   common for this
                    the liquidation     purpose) any
                    or dissolution of   surplus that
                    CBS.                remains after
                                        paying or
                                        providing for all
                                        liabilities of
                                        CBS and after all

                                      135
<PAGE>

- --------------------------------------------------------------------------------
                                                              Combined Company
   Shareholder      Viacom Before the     CBS Before the         Shareholder
      Rights              Merger              Merger               Rights
- --------------------------------------------------------------------------------

                                        distributions
                                        have been made to
                                        stock having a
                                        preference to the
                                        common with
                                        respect to
                                        liquidation/dissolutions.

- --------------------------------------------------------------------------------


                                      136
<PAGE>


   In addition, upon consummation of the merger, holders of shares of CBS
Series B preferred stock will become holders of shares of Viacom Series C
preferred stock. Consequently, following the merger, Delaware law and Viacom's
proposed new Restated Certificate of Incorporation and its By-laws, both as
amended as a result of the merger, will govern the rights of former holders of
CBS Series B preferred stock. Except as described in the table below, the
rights of holders of Viacom Series C preferred stock are substantially
identical to the rights of holders of CBS Series B preferred stock:

<TABLE>
<CAPTION>
                                                                Viacom Series C
                           CBS Series B Preferred Stock         Preferred Stock
                         -------------------------------- ----------------------------
<S>                      <C>                              <C>
Par Value:               $1.00 per share                  $.01 per share
Voting Rights Equal To:  1,000 shares of CBS common stock 100 shares of Viacom Class A
                                                          common stock
Convertible into:        1,000 shares of CBS common stock 1,000 shares of Viacom
                                                          non-voting Class B common
                                                          stock
</TABLE>

           ADOPTION OF NEW RESTATED CERTIFICATE OF INCORPORATION

   The Board of Directors of Viacom has declared the advisability, approved and
is submitting for shareholder adoption a new Restated Certificate of
Incorporation for Viacom. The full text of the proposed new Restated
Certificate of Incorporation is attached as Annex B. For a summary of the
material provisions, see "The Merger--Directors, Management and Corporate
Governance of the Combined Company," which should be read in conjunction with,
and is qualified in its entirety by reference to, the full text of the proposed
new Restated Certificate of Incorporation attached as Annex B. For a summary of
the material differences between the Restated Certificate of Incorporation as
in effect immediately prior to the effective time of the merger and the
proposed new Restated Certificate of Incorporation, see "Comparison of
Shareholder Rights."


                                      137
<PAGE>


                  AMENDMENT TO THE VIACOM 1997 LONG-TERM

                         MANAGEMENT INCENTIVE PLAN

   The Viacom 1997 long-term management incentive plan was adopted on March 27,
1997 and was approved by Viacom's shareholders. The Viacom board amended the
plan on July 29, 1999 and September 6, 1999 to increase the number of shares of
Viacom Class B common stock authorized for issuance under this plan by an
additional 10 million shares to a total of 50 million shares of Class B common
stock, as described more fully below, as well as to make certain other
amendments. The increase in the number of shares of Class B common stock
authorized for issuance under the plan is being submitted for approval at the
special meeting by the affirmative vote of the holders of a majority of the
shares of Viacom's Class A common stock represented in person or by proxy and
entitled to vote at the special meeting.

 General Description of this Plan

   The following is a description of the material features of this plan. The
full text of this plan is filed as an exhibit to this registration statement.
This plan provides for grants of stock options to purchase shares of Class B
common stock, stock appreciation rights, restricted shares of Class B common
stock and phantom shares. However, no incentive stock options, stock
appreciation rights, restricted shares or phantom shares have been or will be
granted under this plan. The terms and conditions of the non-qualified stock
options granted or to be granted under the plan are described in more detail
below. Approximately 1,000 of Viacom's employees are eligible for grants under
this plan. Where necessary, compensation relating to awards under this plan is
generally intended to qualify as "qualified performance-based compensation,"
which is excluded from the $1.0 million limit on deductible compensation set
forth in Section 162(m) of the Internal Revenue Code.

   The maximum aggregate number of shares of Class B common stock that may be
distributed under this plan, whether reserved for issuance upon grants of stock
options or stock appreciation rights or granted as restricted shares, is
currently 40 million, subject to adjustment. On July 29, 1999 and September 6,
1999, the board amended this plan to authorize the issuance of an additional 10
million shares of Class B common stock, subject to approval of the Viacom
shareholders at the special meeting, for a total of 50 million shares. Shares
of Class B common stock covered by expired or terminated stock options are not
counted in applying such limit. The maximum aggregate number of shares of Class
B common stock that may be granted pursuant to awards granted to any
participant during the five-year term of this plan is 10 million. Grants under
this plan are currently authorized by the senior executive compensation
committee of the Viacom board, in its sole discretion. For this reason, it is
not possible to determine the benefits or amounts of the awards that will be
received by any particular employees or group of employees in the future.

 Administration

   This plan is administered by the senior executive compensation committee, or
such other committee appointed by the Viacom board, which will be referred to
as the "committee" throughout the description of this plan. The committee must
be comprised of at least two members of the board of directors, each of whom
must be a "non-employee" director within the meaning of Rule 16b-3 under the
Securities Exchange Act of 1934.

 Stock Options

   Stock options can be either incentive stock options or options that do not
qualify as incentive stock options for federal income tax purposes, called non-
qualified stock options, as determined by the committee. However, all stock
options issued under the plan or to be issued will be non-qualified stock
options.

                                      138
<PAGE>


   Subject to some limits described below, the committee determines the number
of stock options granted, the exercise price of the stock options, the vesting
schedule applicable to the stock options and the period during which they can
be exercised. The committee may, in its discretion, accelerate the vesting date
of any stock option. No stock option can be exercised more than ten years after
the date of grant. The exercise price of a stock option must be paid in full at
the time of exercise as follows:

  .  in cash,

  .  in the discretion of the committee, in shares of Viacom Class B common
     stock or other Viacom securities designated by the committee, or

  .  in a combination of cash, shares or such other securities.

   Generally, if a participant voluntarily terminates employment or his
employment is terminated by Viacom other than for cause, his or her outstanding
stock options may be exercised, to the extent then exercisable, for six months
following the date of termination. In the event of a participant's retirement,
he or she may exercise his or her stock options, to the extent exercisable on
the date of retirement, for six months after his or her retirement for options
granted prior to August 1, 1999 and for two years after his or her retirement
for options granted on or after August 1, 1999. In the event of a participant's
death, his or her stock options may be exercised, to the extent exercisable at
the date of death, by the person who acquired the right to exercise the stock
options by will or the laws of descent and distribution for one year following
the date of death. In the event of the permanent disability of a participant,
his or her stock options may be exercised, to the extent exercisable upon the
date of the onset of such permanent disability, for one year following such
date. If any participant's employment is terminated for cause, then, unless the
committee determines otherwise, all stock options, whether or not then vested,
will be forfeited by the participant effective as of the date of such
termination. The committee generally has the discretion to set post-termination
exercise periods in excess of those described above. However, in no event may a
stock option be exercised following the earlier to occur of the expiration of
the option and the tenth anniversary of the date of grant.

   In the event that a participant's employment terminates under circumstances
that would constitute an "involuntary termination," within the meaning of
Viacom's executive severance plans, all of the participant's options will vest
on the date of his or her involuntary termination, and each stock option will
continue to be exercisable in accordance with its terms, for two years, in case
of a Vice President, and for three years, in the case of a Senior Vice
President, or through the option's original expiration date, if earlier. For
Messrs. Dauman and Dooley only, the post-resignation option exercise periods of
their options have been extended through December 31, 2003 or through the
option's original expiration date, if earlier, subject to their compliance with
the restrictive covenants in their agreements. The executive severance plans
and the agreements with Messrs. Dauman and Dooley are described in detail in
the section captioned "Interests of Persons in the Merger--Senior Management
Arrangements" above.

 Adjustments

   In the event of a merger, consolidation, stock split, dividend,
distribution, combination, reclassification or recapitalization that changes
the character or amount of the Class B common stock, the committee will make
any adjustments as it deems appropriate to the following:

  .  the number of shares of Class B common stock subject to any stock
     options,

  . the exercise price of any outstanding stock options, and

  . the maximum number of shares of Class B common stock that may be granted
    under the plan or the aggregate number of shares that may be granted to
    any participant.

                                      139
<PAGE>


 Transfer Restrictions, Etc.

   The rights of a participant with respect to the stock options granted under
this plan are not transferable by the participant except:

  . by will or the laws of descent and distribution, or

  . to members of the participant's immediate family or trusts whose
    beneficiaries are members of the participant's immediate family, as
    permitted by the committee.

   Except as described above, no grant under this plan entitles a participant
to any rights of a holder of shares of Class B common stock, nor will any grant
be construed as giving any employee a right to continued service with Viacom.

 Amendment and Termination of this Plan

   This plan, by its terms, expires on March 27, 2002. This plan may be
terminated and may be altered, amended, suspended or terminated at any time, in
whole or in part, by the board of directors, except that no alteration or
amendment will be effective without shareholder approval if approval is
required.


 Tax Consequences

   The following is intended as a general summary of the federal income tax
consequences associated with the grant and exercise of non-qualified stock
options. This summary does not purport to be complete and does not address any
applicable state or local tax law. In general, the grant of a non-qualified
stock option will not result in the recognition of taxable income by the
participant or in a tax deduction to Viacom or its subsidiaries. Upon exercise
of a non-qualified stock option, a participant will recognize ordinary income
in an amount equal to the excess of the fair market value of the shares
purchased over the exercise price of the non-qualified stock option. The amount
of the income so recognized is subject to income tax withholding and a tax
deduction equal to the amount of such income is allowable to the participant's
employer. Gain or loss upon a subsequent sale of the stock received upon
exercise of a non-qualified stock option generally would be taxed as capital
gain or loss (long-term or short-term depending on the holding period of the
stock sold). Certain additional rules apply if the exercise price for a non-
qualified stock option is paid in shares or other securities previously owned
by the participant.

                           SHAREHOLDER PROPOSALS

   The Viacom board will consider proposals of shareholders intended to be
presented for action at Viacom's next or, if the merger is completed, the
combined company's, annual meeting of shareholders. A shareholder proposal must
be submitted in writing and be received at Viacom's principal executive
offices, 1515 Broadway, New York, NY 10036, Attn: Corporate Secretary. The
deadline for shareholders to submit proposals pursuant to Rule 14a-8 of the
Securities Exchange Act of 1934 for inclusion in Viacom's proxy statement and
form of proxy for the annual meeting is .. If a shareholder wishes to submit
notice of a proposal outside of the processes of Rule 14a-8 of the Securities
Exchange Act, the proposal must be submitted in writing and be received by
Viacom no later than .. If notice of a shareholder proposal submitted outside
of the processes of Rule 14a-8 of the Exchange Act is received by Viacom after
 ., then Viacom's proxy for the annual meeting may confer discretionary
authority to vote on such matter without any discussion of such matter in the
proxy statement for the annual meeting.

   If the merger is not completed, CBS will hold a 2000 annual meeting of
shareholders. If such meeting is held, shareholders' proposals must be in
writing, addressed to the CBS Secretary, and received at the principal
executive offices of CBS on or before November 26, 1999, to be considered for
inclusion in the proxy materials relating to that meeting. Shareholder nominees
or proposals outside of the processes of Rule 14a-8 of the Exchange Act must be
sent to the CBS Secretary at the principal executive offices of CBS for receipt
between January 5, 2000 and February 4, 2000 and must include the information
required by CBS' By-laws. In the event the combination is completed, there will
not be an annual meeting of CBS in 2000.

                                      140

<PAGE>

                                 LEGAL MATTERS

   Legal matters with respect to the validity of the securities offered hereby
and the merger will be passed upon for Viacom by Michael D. Fricklas, Esq.,
Senior Vice President, General Counsel and Secretary of Viacom.

                                    EXPERTS

   The consolidated financial statements of Viacom incorporated into this
document by reference to Viacom's Annual Report on Form 10-K for the year ended
December 31, 1998, have been so incorporated in reliance on the report of
PricewaterhouseCoopers LLP, independent accountants, given on the authority of
said firm as experts in auditing and accounting.

   The consolidated financial statements and the related financial statement
schedule of CBS, as of December 31, 1998 and 1997 and for each of the years in
the three year period ended December 31, 1998, incorporated by reference in
this joint proxy statement/prospectus from CBS' Annual Report on Form 10-K for
the year ended December 31, 1998, have been audited by KPMG LLP, independent
auditors, as stated in their reports, which are incorporated in this document
by reference, and have been so incorporated in reliance upon the reports of
such firm given upon their authority as experts in accounting and auditing.

   The consolidated financial statements of King World incorporated in this
joint proxy statement/prospectus by reference from CBS' Current Report on Form
8-K dated on or about October 8, 1999, have been audited by Arthur Andersen
LLP, independent public accountants, as indicated in their report with respect
thereto and is incorporated in this document by reference in reliance upon the
authority of said firm as experts in giving said report.

                    WHERE YOU CAN FIND MORE INFORMATION AND

                  INCORPORATION OF DOCUMENTS BY REFERENCE

   Viacom and CBS are subject to the informational requirements of the
Securities Exchange Act of 1934 and each accordingly files reports and other
information with the SEC. Reports, proxy statements and other information filed
by Viacom or CBS with the SEC can be inspected and copied at the public
reference facilities maintained by the SEC at Room 1024, 450 Fifth Street,
N.W., Washington, D.C. 20549 or at its regional offices located at Suite 1400,
Northwestern Atrium Center, 500 West Madison Street, Chicago, Illinois 60661
and at Seven World Trade Center, 13th Floor, New York, New York 10048, and
copies of these materials can be obtained from the Public Reference Section of
the SEC, 450 Fifth Street, N.W., Washington, D.C. 20549, at prescribed rates,
or by calling the SEC at 1-800-SEC-0330. In addition, the SEC maintains an
Internet site that contains reports, proxy statements and other information
regarding registrants that file electronically, such as Viacom and CBS. The
address of the SEC's Internet site is http://www.sec.gov.

   Viacom has filed a registration statement on Form S-4 under the Securities
Act of 1933, of which this joint proxy statement/prospectus forms a part,
relating to the Viacom Class B common stock to be issued in connection with the
merger. This joint proxy statement/prospectus does not contain all the
information set forth in the registration statement, selected portions of which
are omitted in accordance with the rules and regulations of the SEC. For
further information pertaining to Viacom, CBS and the Viacom Class B common
stock, reference is made to the registration statement and its exhibits.
Statements contained in this joint proxy statement/prospectus or in any
document incorporated in this joint proxy statement/prospectus by reference as
to the contents of any contract or other document referred to within this
document or other documents that are incorporated by reference are not
necessarily complete and, in each instance, reference is made to the copy of
the applicable contract or other document filed as an exhibit to the
registration statement or otherwise filed with the SEC. Each statement
contained in this joint proxy statement/prospectus is qualified in its entirety
by reference to the underlying documents.

                                      141
<PAGE>

   Viacom Class A and Class B common stock are listed on the NYSE and were
previously listed on the American Stock Exchange. Reports, proxy statements and
other information concerning Viacom can be inspected at the offices of the
NYSE, 20 Broad Street, New York, New York 10005 and the American Stock
Exchange, 86 Trinity Place, New York, New York 10006. CBS common stock is
listed on the NYSE, the Chicago Stock Exchange, the Boston Stock Exchange, the
Philadelphia Stock Exchange and the Pacific Stock Exchange. Reports, proxy
statements and other information concerning CBS can also be inspected at the
offices of the NYSE.

   This joint proxy statement/prospectus incorporates documents by reference
that are not included as part of this document. Viacom and CBS undertake to
provide, without charge, to each person, including any beneficial owner of
Viacom Class A common stock, Viacom Class B common stock and CBS Common Stock,
to whom a copy of this joint proxy statement/prospectus has been delivered,
upon written or oral request, a copy of any and all of the documents that have
been incorporated into this document by reference, other than exhibits to those
documents unless the exhibits are specifically incorporated into this document
by reference. Requests for these documents should be directed, in the case of
documents relating to Viacom or any of its subsidiaries, to Viacom Inc., 1515
Broadway, 53rd Floor, New York, New York 10036, Attention: Investor Relations,
phone number: (212) 258-6700, and, in the case of documents relating to CBS or
any of its subsidiaries, to CBS Corporation, 51 W. 52nd Street, New York, New
York 10019,  .  phone number: (212) 975-4321. In order to ensure timely
delivery of requested documents, requests should be made by November  . , 1999.

   The following documents, which have been filed with the SEC by Viacom (File
No. 1-9553) and CBS (File No. 1-977), are incorporated into this document by
reference:

Viacom

   (a) the Annual Report on Form 10-K of Viacom for the fiscal year ended
December 31, 1998;

   (b) the Viacom Quarterly reports on Form 10-Q for the periods ended March
31, 1999 and June 30, 1999; and

   (c) the Current Reports on Form 8-K of Viacom filed May 18, 1999, June 24,
1999, September 8, 1999, as amended, and October 12, 1999.

CBS

   (a) the Annual Report on Form 10-K, as amended by Form 10-K/A, of CBS for
the fiscal year ended December 31, 1998;

   (b) the CBS Quarterly report on Form 10-Q, as amended by Form 10-Q/A, for
the period ended March 31, 1999 and the CBS Quarterly report on Form 10-Q for
the period ended June 30, 1999;

   (c) the Current Reports on Form 8-K of CBS filed January 29, 1999, February
5, 1999, April 1, 1999, April 13, 1999, April 30, 1999, June 4, 1999, June 28,
1999, July 30, 1999, August 4, 1999, September 8, 1999, September 15, 1999,
October 8, 1999 (in respect of the Viacom/CBS merger) and October 12, 1999;

   (d) the Current Report on Form 8-K of CBS filed on October 8, 1999 which
includes select historical financial statements of King World;

   (e) the description of CBS common stock contained in CBS' registration
statement on Form 10 dated May 15, 1935; and

   (f) the definitive Proxy Statement filed on March 25, 1999, in connection
with CBS' 1999 Annual Meeting.

                                      142
<PAGE>

   All references within this document to:

     (a) the Form 10-K of CBS for the fiscal year ended December 31, 1998,
  refer to that Form 10-K as amended by the Form 10-K/A; and

     (b) the Form 10-Q of CBS for the period ended March 31, 1999, refer to
  that Form 10-Q as amended by the Form 10-Q/A.

   All documents filed by Viacom and CBS according to Section 13(a), 13(c), 14
or 15(d) of the Exchange Act, after the date of this joint proxy
statement/prospectus and prior to the date of the special shareholders'
meetings are incorporated by reference into this joint proxy
statement/prospectus and are considered a part of this joint proxy
statement/prospectus from the date of filing of those documents.

   Any statement contained within this joint proxy statement/prospectus or in
any document incorporated by reference will be deemed to be modified or
superseded for purposes of this joint proxy statement/prospectus to the extent
that the statement contained in this joint proxy statement/prospectus or in any
subsequently filed document that also is or is deemed to be incorporated by
reference in this joint proxy statement/prospectus modifies or supersedes that
statement. Statements so modified or superseded will not be deemed, except as
so modified or superseded, to constitute a part of this joint proxy
statement/prospectus.

   No person has been authorized to give any information or to make any
representation other than as contained in this joint proxy statement/prospectus
in connection with the Viacom Class B common stock to be issued in connection
with the merger and, if given or made, the information or representation must
not be relied upon as having been authorized. This joint proxy
statement/prospectus does not constitute an offer to sell or a solicitation of
an offer to purchase securities in any jurisdiction in which, or to any person
to whom, it would be unlawful to make such an offer or solicitation. Neither
the delivery of this joint proxy statement/prospectus nor any distribution of
the securities offered hereunder shall, under any circumstances, create any
implication that there has been no change in the affairs of Viacom or CBS since
the date of this joint proxy statement/prospectus or that the information
contained in this joint proxy statement/prospectus is correct as of any time
subsequent to that date. All information in this joint proxy
statement/prospectus regarding Viacom has been provided by Viacom, and all
information regarding CBS has been provided by CBS.

                                      143
<PAGE>


                                                                    ANNEX A

- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------


                         AMENDED AND RESTATED AGREEMENT
                               AND PLAN OF MERGER


                                    Between


                                  VIACOM INC.

                                      and

                                CBS CORPORATION


                         Dated as of September 6, 1999,
                 as amended and restated as of October 8, 1999



- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
<PAGE>

                               TABLE OF CONTENTS

<TABLE>
<CAPTION>
 Section                                                                   Page
 -------                                                                   ----

                                   ARTICLE I

                                   The Merger

 <C>     <S>                                                               <C>
 1.01.   The Merger......................................................   A-2
 1.02.   Effective Time; Closing.........................................   A-2
 1.03.   Effect of the Merger............................................   A-2
 1.04.   Certificate of Incorporation and By-Laws........................   A-2

                                   ARTICLE II

               Conversion of Securities; Exchange of Certificates

 2.01.   Conversion of Securities........................................   A-2
 2.02.   Exchange of Certificates........................................   A-3
 2.03.   Stock Transfer Books............................................   A-5
 2.04.   Stock Options and Other Stock Plans.............................   A-5

                                  ARTICLE III

                     Representations and Warranties of CBS

 3.01.   Organization and Qualification; Subsidiaries....................   A-6
 3.02.   Certificate of Incorporation and By-Laws........................   A-6
 3.03.   Capitalization..................................................   A-7
 3.04.   Authority Relative to Agreement.................................   A-7
 3.05.   No Conflict; Required Filings and Consents......................   A-7
 3.06.   Permits and Licenses; Contracts.................................   A-8
 3.07.   SEC Filings; Financial Statements...............................   A-9
 3.08.   Absence of Certain Changes or Events............................   A-9
 3.09.   Absence of Litigation...........................................  A-10
 3.10.   Employee Benefit Plans..........................................  A-10
 3.11.   Labor Matters...................................................  A-11
 3.12.   Environmental Matters...........................................  A-11
 3.13.   Trademarks, Patents and Copyrights..............................  A-12
 3.14.   Taxes...........................................................  A-12
 3.15.   Tax Matters.....................................................  A-13
 3.16.   Year 2000 Compliance............................................  A-13
 3.17.   Opinion of Financial Advisors...................................  A-13
 3.18.   Vote Required...................................................  A-13
 3.19.   Brokers.........................................................  A-13
 3.20.   Pennsylvania Law................................................  A-13
 3.21.   Rights Agreement................................................  A-14
 3.22.   Gaylord.........................................................  A-14

                                   ARTICLE IV

                    Representations and Warranties of Viacom

 4.01.   Organization and Qualification; Subsidiaries....................  A-14
 4.02.   Certificate of Incorporation and By-Laws........................  A-14
 4.03.   Capitalization..................................................  A-15
 4.04.   Authority Relative to Agreement.................................  A-15
 4.05.   No Conflict; Required Filings and Consents......................  A-15
</TABLE>

                                      A-i
<PAGE>

<TABLE>
<CAPTION>
 Section                                                                   Page
 -------                                                                   ----
 <C>     <S>                                                               <C>
 4.06.   Permits and Licenses; Contracts.................................  A-16
 4.07.   SEC Filings; Financial Statements...............................  A-17
 4.08.   Absence of Certain Changes or Events............................  A-17
 4.09.   Absence of Litigation...........................................  A-18
 4.10.   Employee Benefit Plans..........................................  A-18
 4.11.   Labor Matters...................................................  A-19
 4.12.   Environmental Matters...........................................  A-19
 4.13.   Trademarks, Patents and Copyrights..............................  A-20
 4.14.   Taxes...........................................................  A-20
 4.15.   Tax Matters.....................................................  A-20
 4.16.   Year 2000 Compliance............................................  A-20
 4.17.   Opinion of Financial Advisors...................................  A-21
 4.18.   Vote Required...................................................  A-21
 4.19.   Section 203 of Delaware Law.....................................  A-21
 4.20.   Brokers.........................................................  A-21

                                   ARTICLE V

                     Conduct of Business Pending the Merger

 5.01.   Conduct of Business by CBS Pending the Merger...................  A-21
 5.02.   Conduct of Business by Viacom Pending the Merger................  A-23
 5.03.   Other Actions...................................................  A-25

                                   ARTICLE VI

                             Additional Agreements

 6.01.   Registration Statement; Joint Proxy Statement...................  A-25
 6.02.   Stockholders' Meetings..........................................  A-27
 6.03.   Appropriate Action; Consents; Filings...........................  A-27
 6.04.   Access to Information; Confidentiality..........................  A-28
 6.05.   No Solicitation of Competing Transactions.......................  A-29
 6.06.   Directors' and Officers' Indemnification and Insurance..........  A-30
 6.07.   Notification of Certain Matters.................................  A-30
 6.08.   Tax Treatment...................................................  A-30
 6.09.   Stock Exchange Listing..........................................  A-30
 6.10.   Public Announcements............................................  A-30
 6.11.   Viacom's Directors..............................................  A-31
 6.12.   Rights Agreement................................................  A-31
 6.13.   Assumption of Debt and Leases...................................  A-31
 6.14.   Affiliates of CBS...............................................  A-31
 6.15.   Prior Service...................................................  A-31
 6.16.   Employee Matters................................................  A-31
 6.17.   Gaylord.........................................................  A-32
 6.18.    Gaylord Tax Matters............................................  A-32

                                  ARTICLE VII

                            Conditions to the Merger

 7.01.   Conditions to the Obligations of Each Party.....................  A-32
 7.02.   Conditions to the Obligations of Viacom.........................  A-33
 7.03.   Conditions to the Obligations of CBS............................  A-33
</TABLE>


                                      A-ii
<PAGE>

<TABLE>
<CAPTION>
 Section                                                                   Page
 -------                                                                   ----

                                  ARTICLE VIII

                       Termination, Amendment and Waiver

 <C>     <S>                                                               <C>
 8.01.   Termination.....................................................  A-33
 8.02.   Effect of Termination...........................................  A-34
 8.03.   Amendment.......................................................  A-34
 8.04.   Waiver..........................................................  A-34
 8.05.   Expenses........................................................  A-34

                                   ARTICLE IX

                               General Provisions

 9.01.   Non-Survival of Representations, Warranties and Agreements......  A-35
 9.02.   Notices.........................................................  A-35
 9.03.   Interpretation, Certain Definitions.............................  A-36
 9.04.   Severability....................................................  A-37
 9.05.   Entire Agreement; Assignment....................................  A-37
 9.06.   Parties in Interest.............................................  A-37
 9.07.   Specific Performance............................................  A-38
 9.08.   Governing Law...................................................  A-38
 9.09.   Consent to Jurisdiction.........................................  A-38
 9.10.   Counterparts....................................................  A-38
 9.11.   WAIVER OF JURY TRIAL............................................  A-38
</TABLE>

EXHIBITS

<TABLE>
 <C>          <S>
 Exhibit A-1  Restated Certificate of Incorporation
 Exhibit A-2  By-laws
 Exhibit 6.14 Form of CBS Affiliate Letter
</TABLE>

                                     A-iii
<PAGE>

                             Index of Defined Terms

<TABLE>
<CAPTION>
Defined Term                                              Location of Definition
- ------------                                              ----------------------
<S>                                                       <C>
Affiliate................................................     Section 9.03(a)
Agreement................................................     Recitals
Articles of Merger.......................................     Section 1.02
beneficial owner.........................................     Section 9.03(b)
Blockbuster..............................................     Section 4.02
Blockbuster Options......................................     Section 4.03
Blue Sky Laws............................................     Section 3.05(b)
business day.............................................     Section 9.03(c)
CBS......................................................     Recitals
CBS Alternative Transaction Fee..........................     Section 8.05(b)
CBS Benefit Plans........................................     Section 3.10(a)
CBS Common Stock.........................................     Section 2.01(a)
CBS Disclosure Schedule..................................     Article III
CBS FCC Licenses.........................................     Section 3.06(c)
CBS Financial Advisor....................................     Section 3.17
CBS Indentures...........................................     Section 6.13(a)
CBS Licensed Facilities..................................     Section 3.06(c)
CBS Material Adverse Effect..............................     Section 3.01
CBS Options..............................................     Section 2.04(a)
CBS Permits..............................................     Section 3.06(a)
CBS Preferred Stock......................................     Section 3.03
CBS Rights Agreement.....................................     Section 3.03
CBS SEC Reports..........................................     Section 3.07(a)
CBS Series B Preferred Stock.............................     Section 2.01(a)
CBS Stock Option Plans...................................     Section 2.04(a)
CBS Superior Proposal....................................     Section 6.05(c)
CBS Systems..............................................     Section 3.16(b)
CBS Year 2000 Compliant..................................     Section 3.16(b)
CBS Year 2000 Plan.......................................     Section 3.16(a)
CERCLA...................................................     Section 3.12(d)
Certificate of Merger....................................     Section 1.02
Certificates.............................................     Section 2.02(b)
Closing..................................................     Section 1.02
Closing Date.............................................     Section 1.02
Code.....................................................     Recitals
Communications Act.......................................     Section 3.05(b)
Competing Transaction....................................     Section 6.05(b)
Confidentiality Agreement................................     Section 6.04(c)
Continuing Employees.....................................     Section 6.15
Control..................................................     Section 9.03(d)
Controlled by............................................     Section 9.03(d)
Delaware Law.............................................     Recitals
</TABLE>

                                      A-i
<PAGE>

<TABLE>
<CAPTION>
Defined Term                                              Location of Definition
- ------------                                              ----------------------
<S>                                                       <C>
Effective Time...........................................     Section 1.02
Environmental Laws.......................................     Section 3.12(d)
Environmental Permits....................................     Section 3.12(d)
ERISA....................................................     Section 3.10(a)
Exchange Act.............................................     Section 2.04(c)
Exchange Agent...........................................     Section 2.02(a)
Exchange Fund............................................     Section 2.02(a)
Exchange Ratio...........................................     Section 2.01(a)
Expenses.................................................     Section 8.05(a)
FCC......................................................     Section 3.05(b)
Gaylord..................................................     Recitals
Gaylord Agreement........................................     Recitals
Gaylord Proxy............................................     Section 3.22
Governmental Authority...................................     Section 9.03(e)
Hazardous Materials......................................     Section 3.12(d)
HSR Act..................................................     Section 3.05(b)
Infinity.................................................     Section 3.02
IRS......................................................     Section 3.10(a)
King World...............................................     Section 3.03
knowledge................................................     Section 9.03(f)
Laws.....................................................     Section 3.05(a)
Merger...................................................     Recitals
NYSE.....................................................     Section 3.03
Order....................................................     Section 6.03(b)
Parent...................................................     Recitals
Parent Stockholder Agreement.............................     Recitals
Parent Voting Agreements.................................     Recitals
Pending Transactions.....................................     Section 5.01
Pennsylvania Law.........................................     Recitals
person...................................................     Section 9.03(g)
Preferred Exchange Ratio.................................     Section 2.01(a)
Proxy Statement..........................................     Section 6.01(a)
Registration Statement...................................     Section 6.01(a)
Representatives..........................................     Section 6.04(a)
Rights...................................................     Section 3.03
SEC......................................................     Article III
Securities Act...........................................     Section 3.05(b)
Shares...................................................     Section 2.01(a)
Split-off................................................     Section 5.02
Stockholders' Meeting....................................     Section 6.02
Subsidiaries.............................................     Section 9.03(h)
Subsidiary...............................................     Section 9.03(h)
Substituted Option.......................................     Section 2.04(a)
Surviving Corporation....................................     Section 1.01
</TABLE>

                                      A-ii
<PAGE>

<TABLE>
<CAPTION>
Defined Term                                              Location of Definition
- ------------                                              ----------------------
<S>                                                       <C>
Tax......................................................     Section 3.14(a)
Taxes....................................................     Section 3.14(a)
Terminating CBS Breach...................................     Section 8.01(f)
Terminating Viacom Breach................................     Section 8.01(e)
Under common control with................................     Section 9.03(d)
Viacom...................................................     Recitals
Viacom Benefit Plans.....................................     Section 4.10(a)
Viacom Class A Common Stock..............................     Recitals
Viacom Class B Common Stock..............................     Section 2.01(a)
Viacom Disclosure Schedule...............................     Article IV
Viacom Employee Arrangements.............................     Section 6.16(a)
Viacom FCC Licenses......................................     Section 4.06(c)
Viacom Financial Advisor.................................     Section 4.17
Viacom Licensed Facilities...............................     Section 4.06(c)
Viacom Material Adverse Effect...........................     Section 4.01
Viacom Options...........................................     Section 4.03
Viacom Permits...........................................     Section 4.06(a)
Viacom Preferred Stock...................................     Section 4.03
Viacom Proposal..........................................     Recitals
Viacom SEC Reports.......................................     Section 4.07(a)
Viacom Series C Preferred Stock..........................     Section 2.01(a)
Viacom Stock Option Plans................................     Section 4.03
Viacom Systems...........................................     Section 4.16(b)
Viacom Year 2000 Compliant...............................     Section 4.16(b)
Viacom Year 2000 Plan....................................     Section 4.16(a)
</TABLE>

                                     A-iii
<PAGE>

   AMENDED AND RESTATED AGREEMENT AND PLAN OF MERGER dated as of September 6,
1999, as amended and restated as of October 8, 1999 (this "Agreement"), between
VIACOM INC., a Delaware corporation ("Viacom"), and CBS CORPORATION, a
Pennsylvania corporation ("CBS").

   WHEREAS, Viacom and CBS entered into an Agreement and Plan of Merger dated
as of September 6, 1999 (the "Original Merger Agreement"), and they now desire
to amend and restate the Original Merger Agreement (i) to provide, among other
things, for the conversion at the Effective Time (as defined in Section 1.02),
by virtue of the Merger (as defined below) and without any action on the part
of Viacom, CBS or the holders of any securities of CBS or Viacom, of each
outstanding share of CBS Series B Preferred Stock (as defined in Section 2.01),
if any, into the right to receive 1.085 shares of Viacom Series C Preferred
Stock (as defined in Section 2.01) and (ii) to restate Exhibit A-1 to provide
for the creation of the Viacom Series C Preferred Stock (it being understood
that all references herein to this "Agreement" refer to the Original Merger
Agreement as amended and restated hereby and that all references herein to the
date hereof or the date of this Agreement refer to September 6, 1999);

   WHEREAS, Gaylord Entertainment Company ("Gaylord") and certain of its
subsidiaries and CBS and certain of its subsidiaries are parties to an
Agreement and Plan of Merger dated as of April 9, 1999, as amended as of
October 8, 1999 (the "Gaylord Agreement"), pursuant to which Gaylord will
receive shares of CBS Series B Preferred Stock;

   WHEREAS, the Boards of Directors of CBS and Viacom have determined that it
is in the best interests of their respective companies and stockholders to
combine their respective businesses in a "merger of equals" transaction to be
effected as set forth in this Agreement;

   WHEREAS, the Board of Directors of CBS has (i) determined that the merger of
CBS with and into Viacom on the terms set forth in this Agreement (the
"Merger") pursuant to the General Corporation Law of the State of Delaware
("Delaware Law") and the Business Corporation Law of the Commonwealth of
Pennsylvania ("Pennsylvania Law") is fair to CBS and the holders of Shares (as
defined in Section 2.01) and is in the best interests of CBS and (ii) approved
this Agreement, the Merger and the other transactions contemplated hereby and
has recommended that the shareholders of CBS adopt this Agreement;

   WHEREAS, the Board of Directors of Viacom has declared to be advisable this
Agreement, the Merger and the other transactions contemplated hereby and has
recommended that the holders of the Class A Common Stock, par value $.01 per
share, of Viacom (the "Viacom Class A Common Stock") adopt this Agreement (the
"Viacom Proposal");

   WHEREAS, concurrently with the execution of this Agreement and as an
inducement to CBS to enter into this Agreement, National Amusements, Inc., a
Maryland corporation and the holder of a majority of the shares of Viacom Class
A Common Stock ("Parent"), and CBS have entered into (i) a Stockholder
Agreement (the "Parent Stockholder Agreement") pursuant to which Parent has
agreed, among other things, to cause the election of eight members of the Board
of Directors of Viacom designated by CBS for a period of three years following
the Merger and (ii) a Voting Agreement (together with the Parent Stockholder
Agreement, the "Parent Voting Agreements") pursuant to which Parent has agreed,
among other things, to vote its shares of Viacom Class A Common Stock in favor
of adoption of this Agreement and the other transactions contemplated by this
Agreement and to take certain other actions in support of the Merger;

   WHEREAS, for Federal income tax purposes, it is intended that the Merger
shall qualify as a reorganization under the provisions of Section 368(a) of the
United States Internal Revenue Code of 1986, as amended (the "Code");

   WHEREAS, as an inducement to Viacom to enter into this Agreement,
concurrently with the execution and delivery of this Agreement, Mel Karmazin is
entering into an employment agreement with Viacom, to be effective at the
Effective Time (as defined below);

                                      A-1
<PAGE>

   NOW, THEREFORE, in consideration of the foregoing and the mutual covenants
and agreements herein contained and intending to be legally bound hereby,
Viacom and CBS hereby agree as follows:

                                   ARTICLE I

                                   The Merger

   Section 1.01. The Merger. Upon the terms and subject to the conditions set
forth in Article VII, and in accordance with Section 252 of Delaware Law and
Section 1921 of Pennsylvania Law, at the Effective Time CBS shall be merged
with and into Viacom. As a result of the Merger, the separate corporate
existence of CBS shall cease and Viacom shall be the surviving corporation of
the Merger (the "Surviving Corporation").

   Section 1.02. Effective Time; Closing. The closing of the Merger (the
"Closing") shall take place on the first business day after the satisfaction
or, if permissible, waiver of the conditions set forth in Article VII (such
date, the "Closing Date"). On the Closing Date, the parties hereto shall cause
the Merger to be consummated by filing (a) a certificate of merger (the
"Certificate of Merger") with the Secretary of State of the State of Delaware,
in such form as is required by, and executed and acknowledged in accordance
with, Section 252 of Delaware Law and (b) articles of merger (the "Articles of
Merger") with the Department of State of the Commonwealth of Pennsylvania, in
such form as is required by, and executed in accordance with, Section 1927 of
Pennsylvania Law. The term "Effective Time" means the date and time of the
filing of the Certificate of Merger with the Secretary of State of the State of
Delaware (or such later time as may be agreed by the parties hereto and
specified in the Certificate of Merger). The Closing will be held at the
offices of Shearman & Sterling, 599 Lexington Avenue, New York, New York 10022
(or such other place as the parties may agree).

   Section 1.03. Effect of the Merger. At the Effective Time, the effect of the
Merger shall be as provided in the applicable provisions of Delaware Law and
Pennsylvania Law. Without limiting the generality of the foregoing, at the
Effective Time all the property, rights, privileges, powers and franchises of
CBS shall vest in the Surviving Corporation and all debts, liabilities,
obligations, restrictions, disabilities and duties of CBS shall become the
debts, liabilities, obligations, restrictions, disabilities and duties of the
Surviving Corporation.

   Section 1.04. Certificate of Incorporation and By-Laws. (a) The Restated
Certificate of Incorporation of Viacom, as in effect immediately prior to the
Effective Time, shall be amended as of the Effective Time to be and read in its
entirety in the form set forth as Exhibit A-1 and, as so amended, such Restated
Certificate of Incorporation shall be the certificate of incorporation of the
Surviving Corporation until thereafter changed or amended as provided therein
or by applicable law.

   (b) The By-laws of Viacom, as in effect immediately prior to the Effective
Time, shall be amended as of the Effective Time so as to read in their entirety
in the form set forth as Exhibit A-2 and, as so amended, such By-laws shall be
the by-laws of the Surviving Corporation until thereafter changed or amended as
provided therein or by applicable law.

                                   ARTICLE II

               Conversion of Securities; Exchange of Certificates

   Section 2.01. Conversion of Securities. At the Effective Time, by virtue of
the Merger and without any action on the part of Viacom, CBS or the holders of
any of the following securities:

     (a) (i) Each share of Series B Participating Preferred Stock, par value
  $1.00 per share, of CBS ("CBS Series B Preferred Stock"), if any, issued
  and outstanding immediately prior to the Effective Time shall be converted
  into the right to receive 1.085 shares (the "Preferred Exchange Ratio") of
  Series C Preferred Stock, par value $.01 per share, of Viacom ("Viacom
  Series C Preferred Stock") and (ii) each

                                      A-2
<PAGE>

  share of common stock, par value $1.00 per share, of CBS ("CBS Common
  Stock"; all issued and outstanding shares of CBS Common Stock and all
  issued and outstanding shares of CBS Series B Preferred Stock being
  hereinafter collectively referred to as the "Shares") issued and
  outstanding immediately prior to the Effective Time (other than any Shares
  to be cancelled or converted pursuant to Section 2.01(b)) shall be
  converted, subject to Section 2.02(e), into the right to receive 1.085
  shares (the "Exchange Ratio") of Class B Common Stock, par value $.01 per
  share, of Viacom (the "Viacom Class B Common Stock").

     (b) Each Share held in the treasury of CBS and each Share owned by
  Viacom (in each case, other than Shares held by benefit plans or trusts
  (including Rabbi trusts)) immediately prior to the Effective Time shall be
  cancelled and extinguished without any conversion thereof and no payment
  shall be made with respect thereto, and each Share owned by any direct or
  indirect wholly owned subsidiary of Viacom or CBS immediately prior to the
  Effective Time shall be converted into the right to receive a number of
  shares of Viacom Class B Common Stock equal to the Exchange Ratio.

     (c) If, prior to the Effective Time (and as permitted by Sections 5.01
  and/or 5.02), the outstanding shares of CBS Common Stock or shares of
  Viacom Class B Common Stock shall have been increased, decreased, changed
  into or exchanged for a different number or class of shares or securities
  as a result of a reorganization, recapitalization, reclassification, stock
  dividend, stock split, reverse stock split, combination or exchange of
  shares or other similar change in capitalization, then an appropriate and
  proportionate adjustment shall be made to the Exchange Ratio and, in the
  case of any such adjustments to the Viacom Class B Common Stock, then an
  appropriate and proportionate adjustment shall be made to the Preferred
  Exchange Ratio.

   Section 2.02. Exchange of Certificates. (a) Exchange Agent. Viacom shall
deposit, or shall cause to be deposited, with such bank or trust company
designated by Viacom and reasonably acceptable to CBS (the "Exchange Agent"),
for the benefit of the holders of Shares, for exchange in accordance with this
Article II through the Exchange Agent, certificates representing the shares of
Viacom Class B Common Stock and certificates representing the shares of Viacom
Series C Preferred Stock (such certificates for shares of Viacom Class B Common
Stock and such certificates for shares of Viacom Series C Preferred Stock,
together with any dividends or distributions with respect thereto and any cash
in lieu of fractional shares of Viacom Class B Common Stock or Viacom Series C
Preferred Stock payable pursuant to Section 2.02(e), being hereinafter referred
to as the "Exchange Fund") issuable pursuant to Section 2.01 in exchange for
outstanding Shares. The Exchange Agent shall, pursuant to irrevocable
instructions, deliver the Viacom Class B Common Stock and the Viacom Series C
Preferred Stock contemplated to be issued pursuant to Section 2.01 out of the
Exchange Fund. Except as contemplated by Section 2.02(f) hereof, the Exchange
Fund shall not be used for any other purpose.

   (b) Exchange Procedures. As promptly as practicable after the Effective
Time, Viacom shall cause the Exchange Agent to mail to each holder of a
certificate or certificates which immediately prior to the Effective Time
represented outstanding Shares (the "Certificates") (i) a letter of transmittal
(which shall specify that delivery shall be effected, and risk of loss and
title to the Certificates shall pass, only upon proper delivery of the
Certificates to the Exchange Agent, and shall be in customary form) and (ii)
instructions for use in effecting the surrender of the Certificates in exchange
for certificates representing whole shares of Viacom Class B Common Stock or
the shares of Viacom Series C Preferred Stock, as the case may be, together
with any dividends or distributions with respect thereto and any cash in lieu
of fractional shares. Upon surrender to the Exchange Agent of a Certificate for
exchange and cancellation, together with such letter of transmittal, duly
executed, and such other documents as may be required pursuant to such
instructions, the holder of such Certificate shall be entitled to receive in
exchange therefor a certificate representing that number of whole shares of
Viacom Class B Common Stock or that number of shares of Viacom Series C
Preferred Stock, as the case may be, which such holder has the right to receive
in respect of the Shares formerly represented by such Certificate (after taking
into account all Shares then held by such holder), cash in lieu of fractional
shares of Viacom Class B Common Stock or Viacom Series C Preferred Stock to
which such holder is entitled pursuant to Section 2.02(e) and any dividends or
other distributions to which such holder is entitled pursuant to

                                      A-3
<PAGE>

Section 2.02(c), and the Certificate so surrendered shall forthwith be
cancelled. In the event of a transfer of ownership of Shares that is not
registered in the transfer records of CBS, a certificate representing the
proper number of shares of Viacom Class B Common Stock or the proper number of
shares of Viacom Series C Preferred Stock, as the case may be, may be issued to
a transferee if the Certificate representing such Shares is presented to the
Exchange Agent, accompanied by all documents required to evidence and effect
such transfer and by evidence that any applicable stock transfer taxes have
been paid. Until surrendered as contemplated by this Section 2.02, each
Certificate shall be deemed at any time after the Effective Time to represent
only the right to receive upon such surrender the certificate representing
shares of Viacom Class B Common Stock or the certificate representing shares of
Viacom Series C Preferred Stock, as the case may be, cash in lieu of any
fractional shares of Viacom Class B Common Stock or Viacom Series C Preferred
Stock to which such holder is entitled pursuant to Section 2.02(e) and any
dividends or other distributions to which such holder is entitled pursuant to
Section 2.02(c).

   (c) Distributions with Respect to Unexchanged Shares of Viacom Class B
Common Stock and Viacom Series C Preferred Stock. No dividends or other
distributions with a record date after the Effective Time shall be paid to the
holder of any unsurrendered Certificate with respect to the shares of Viacom
Class B Common Stock or Viacom Series C Preferred Stock represented thereby,
and no cash payment in lieu of fractional shares shall be paid to any such
holder pursuant to Section 2.02(e), until the holder of such Certificate shall
surrender such Certificate. Subject to the effect of escheat, Tax (as defined
in Section 3.14) or other applicable Laws (as defined in Section 3.05),
following surrender of any such Certificate, there shall be paid to the record
holder thereof, without interest, (i) promptly, the amount of any cash payable
with respect to a fractional share of Viacom Class B Common Stock or Viacom
Series C Preferred Stock to which such holder is entitled pursuant to Section
2.02(e) and the amount of dividends or other distributions with a record date
after the Effective Time and theretofore paid with respect to such whole shares
of Viacom Class B Common Stock or such shares of Viacom Series C Preferred
Stock, and (ii) at the appropriate payment date, the amount of dividends or
other distributions with a record date after the Effective Time and a payment
date occurring after surrender, payable with respect to such whole shares of
Viacom Class B Common Stock or such shares of Viacom Series C Preferred Stock.

   (d) No Further Rights in CBS Common Stock. All shares of Viacom Class B
Common Stock and all shares of Viacom Series C Preferred Stock issued upon
conversion of the Shares in accordance with the terms hereof (including any
cash paid pursuant to Sections 2.02(c) or (e)) shall be deemed to have been
issued in full satisfaction of all rights pertaining to such Shares.

   (e) No Fractional Shares. No certificates or scrip representing fractional
shares of Viacom Class B Common Stock or shares of Viacom Series C Preferred
Stock shall be issued upon the surrender for exchange of Certificates, and such
fractional share interests will not entitle the owner thereof to vote or to any
other rights of a stockholder of Viacom. Each holder of a fractional share
interest shall be paid an amount in cash equal to the product obtained by
multiplying (i) such fractional share interest to which such holder (determined
after taking into account all fractional share interests then held by such
holder) would otherwise be entitled by (ii) (x) in the case of shares of Viacom
Class B common stock, the closing price for a share of Viacom Class B Common
Stock on the Consolidated Tape, Network A, as reported in The Wall Street
Journal (Northeast edition) or any other authoritative source on the first
trading day immediately following the Effective Time or (y) in the case of
shares of Viacom Series C Preferred Stock, the product of 1000 multiplied by
such closing price. From time to time after the Effective Time, as promptly as
practicable after the determination of the amount of cash, if any, to be paid
to any holders of fractional share interests who have surrendered their
Certificates to the Exchange Agent, the Exchange Agent shall so notify Viacom,
and Viacom shall deposit such amount with the Exchange Agent and shall cause
the Exchange Agent to forward payments to such holder of fractional share
interests subject to and in accordance with the terms of Sections 2.02(b) and
(c).

   (f) Termination of Exchange Fund. Any portion of the Exchange Fund which
remains undistributed to the holders of Shares for six (6) months after the
Effective Time shall be delivered to Viacom, upon demand, and any holders of
Shares who have not theretofore complied with this Article II shall thereafter
look only to

                                      A-4
<PAGE>

Viacom for the shares of Viacom Class B Common Stock or the shares of Viacom
Series C Preferred Stock, any cash in lieu of fractional shares of Viacom Class
B Common Stock or Viacom Series C Preferred Stock to which they are entitled
pursuant to Section 2.02(e) and any dividends or other distributions with
respect to Viacom Class B Common Stock or Viacom Series C Preferred Stock to
which they are entitled pursuant to Section 2.02(c). Any portion of the
Exchange Fund remaining unclaimed by holders of Shares as of a date which is
immediately prior to such time as such amounts would otherwise escheat to or
become property of any government entity shall, to the extent permitted by
applicable Law, become the property of Viacom free and clear of any claims or
interest of any person previously entitled thereto.

   (g) No Liability. Neither Viacom nor CBS shall be liable to any holder of
Shares for any such Shares (or dividends or distributions with respect hereto)
or cash delivered to a public official pursuant to any abandoned property,
escheat or similar Law.

   (h) Lost, Stolen or Destroyed Certificates. In the event that any
Certificate has been lost, stolen or destroyed, upon the making of an affidavit
of that fact by the person claiming such Certificate to be lost, stolen or
destroyed and, if required by Viacom, the posting by such person of a bond in
such reasonable amount as Viacom may direct as indemnity against any claim that
may be made against it with respect to such Certificate, Viacom will, in
exchange for such lost, stolen or destroyed Certificate, issue or cause to be
issued the number of whole shares of Viacom Common Stock or shares of Viacom
Series C Preferred Stock, as the case may be, and pay or cause to be paid the
amounts deliverable in respect thereof pursuant to Sections 2.02(e) and
2.02(c).

   (i) Withholding Rights. Viacom shall be entitled to deduct and withhold from
the consideration otherwise payable pursuant to this Agreement to any holder of
Shares such amounts as it is required to deduct and withhold with respect to
the making of such payment under the Code, or any provision of state, local or
foreign Tax Law. To the extent that amounts are so withheld by Viacom, such
withheld amounts shall be treated for all purposes of this Agreement as having
been paid to the holder of the Shares in respect of which such deduction and
withholding was made by Viacom.

   Section 2.03. Stock Transfer Books. At the Effective Time, the stock
transfer books of CBS shall be closed and there shall be no further
registration of transfers of Shares thereafter on the records of CBS. From and
after the Effective Time, the holders of Certificates shall cease to have any
rights with respect to such Shares except as otherwise provided herein or by
any Laws. On or after the Effective Time, any Certificates presented to the
Exchange Agent or Viacom for any reason shall be converted into shares of
Viacom Class B Common Stock or shares of Viacom Series C Preferred Stock, as
the case may be, any cash in lieu of fractional shares of Viacom Class B Common
Stock or shares of Viacom Series C Preferred Stock to which the holders thereof
are entitled pursuant to Section 2.02(e) and any dividends or other
distributions to which the holders thereof are entitled pursuant to Section
2.02(c).

   Section 2.04. Stock Options and Other Stock Plans. (a) Prior to the
Effective Time, Viacom and CBS shall take such action as may be necessary to
cause each unexpired and unexercised option or warrant to purchase Shares which
are outstanding immediately prior to the Effective Time (collectively, "CBS
Options"), whether granted under CBS's stock option plans set forth in Section
2.04 of the CBS Disclosure Schedule (as defined below) or otherwise (the "CBS
Stock Option Plans"), to be automatically converted at the Effective Time into
an option or warrant (collectively, a "Substituted Option") to purchase a
number of shares of Viacom Class B Common Stock equal to the number of Shares
that could have been purchased (assuming full vesting) under such CBS Option
multiplied by the Exchange Ratio (rounded to the nearest whole number of shares
of Viacom Class B Common Stock) at a price per share of Viacom Class B Common
Stock equal to the per-share option exercise price specified in the CBS Option
divided by the Exchange Ratio (rounded down to the nearest whole cent). Except
as otherwise provided in this Agreement, such Substituted Option shall
otherwise be subject to the same terms and conditions as such CBS Option
(except that all vesting periods with respect thereto shall, to the extent
provided by the terms thereof, accelerate, and be subject to any other rights
which arise under the CBS Stock Option Plans or the option agreements
evidencing awards thereunder as a result of the transactions contemplated by
this Agreement). The date of grant of the Substituted Option shall be the date

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on which the corresponding CBS Option was granted. At the Effective Time, (i)
all references in the related stock option agreements to CBS shall be deemed to
refer to Viacom and (ii) Viacom shall assume all of CBS's obligations with
respect to CBS Options as so amended. As promptly as reasonably practicable
after the Effective Time, Viacom shall issue to each holder of an outstanding
CBS Option a document evidencing the foregoing assumption by Viacom. Employee
and director deferrals and director common stock equivalents and all other
equity based compensation that references CBS Common Stock will as of and after
the Effective Time, be deemed to refer to Viacom Class B Common Stock (as
adjusted to reflect the Exchange Ratio).

   (b) In respect of each CBS Option assumed by Viacom, and the shares of
Viacom Class B Common Stock underlying such CBS Option, Viacom shall, no later
than one Business Day after the Effective Time, file and keep current a Form S-
8 or other appropriate registration statement for as long as any Substituted
Options remain outstanding.

   (c) Prior to the Effective Time, Viacom and CBS shall take all steps
reasonably necessary to cause the transactions contemplated hereby and any
other dispositions of equity securities of CBS (including derivative
securities) or acquisitions of Viacom equity securities (including derivative
securities) in connection with this Agreement by each individual who (a) is a
director or officer of Viacom or (b) at the Effective Time, will become a
director or officer of Viacom, to be exempt under Rule 16b-3 promulgated under
the Securities Exchange Act of 1934, as amended (the "Exchange Act").

                                  ARTICLE III

                     Representations and Warranties of CBS

   Except as disclosed in the report on Form 10-K dated March 24, 1999 for the
year ended December 31, 1998, the Reports on Form 10-K/A, Form 10-Q, Form 10-
Q/A and Form 8-K since December 31, 1998 or the proxy statement dated March 25,
1999, in each case in the form filed by CBS with the United States Securities
and Exchange Commission (the "SEC") or in a separate disclosure schedule which
has been delivered by CBS to Viacom prior to the execution of this Agreement
(the "CBS Disclosure Schedule") (each section of which qualifies the
correspondingly numbered representation and warranty or covenant to the extent
specified therein and such other representations and warranties or covenants to
the extent a matter in such section is disclosed in such a way as to make its
relevance to the information called for by such other representation and
warranty or covenant readily apparent), CBS hereby represents and warrants to
Viacom:

   Section 3.01. Organization and Qualification; Subsidiaries. Each of CBS and
its subsidiaries is a corporation or entity duly incorporated or formed,
validly existing and in good standing under the laws of its jurisdiction of
incorporation or formation and has the requisite corporate power and authority
and all necessary governmental approvals to own, lease and operate its
properties and to carry on its business as it is now being conducted, except
where the failure to have such power, authority and governmental approvals
would not have a CBS Material Adverse Effect (as defined below). Each of CBS
and its subsidiaries is duly qualified or licensed as a foreign corporation to
do business, and is in good standing, in each jurisdiction where the character
of the properties owned, leased or operated by it or the nature of its business
makes such qualification or licensing necessary, except for such failures to be
so qualified or licensed and in good standing that would not have a CBS
Material Adverse Effect. The term "CBS Material Adverse Effect" means any
change, effect or circumstance that is or is reasonably likely to be materially
adverse to the business, results of operations or financial condition of CBS
and its subsidiaries taken as a whole, other than any change, effect or
circumstance relating to or resulting from (i) general changes in the media or
entertainment industries or the advertising markets, (ii) changes in general
economic conditions or securities markets in general or (iii) this Agreement or
the transactions contemplated hereby or the announcement thereof.

   Section 3.02. Certificate of Incorporation and By-Laws. CBS has made
available to Viacom a complete and correct copy of the Articles of
Incorporation and the By-laws, each as amended to date, of CBS

                                      A-6
<PAGE>

and Infinity Broadcasting Corporation, a Delaware corporation ("Infinity"). The
Articles of Incorporation and By-laws (or equivalent organizational documents)
of CBS and its subsidiaries are in full force and effect. Except as would not
have a CBS Material Adverse Effect, none of CBS or its subsidiaries is in
violation of any provision of its Articles of Incorporation or By-laws (or
equivalent organizational documents).

   Section 3.03. Capitalization. The authorized capital stock of CBS consists
of 1,100,000,000 shares of CBS Common Stock and 25,000,000 shares of preferred
stock, par value $1.00 per share (the "CBS Preferred Stock"). As of August 31,
1999, (a) 705,119,425 shares of CBS Common Stock were issued and outstanding,
all of which were validly issued, fully paid and nonassessable, (b) 40,099,599
shares of CBS Common Stock were held in the treasury of CBS, (c) 51,007,538
shares of CBS Common Stock were reserved for future issuance pursuant to
outstanding unexercised employee stock options granted pursuant to the CBS
Stock Option Plans or otherwise and (d) 70,365,195 shares of CBS Common Stock
were reserved for future issuance in connection with the merger of a wholly
owned subsidiary of CBS with and into King World Productions, Inc. ("King
World") and 9,910,600 shares of CBS Common Stock (or some equivalent amount of
CBS Preferred Stock, if appropriate), measured at the September 3, 1999 New
York Stock Exchange (the "NYSE") closing price, were reserved for future
issuance in connection with the acquisition from Gaylord of television station
KVTV, Dallas/Fort Worth, Texas. As of the date of this Agreement, no shares of
CBS Preferred Stock are outstanding. As of the date of this Agreement, except
for the issuance of shares of CBS Common Stock pursuant to the exercise of CBS
Options and options to purchase 5,850,555 shares of Class A Common Stock, par
value $0.01 per share, of Infinity, outstanding prior to August 31, 1999, no
shares of capital stock of CBS or any of its subsidiaries have been issued
since August 31, 1999. Except as set forth in this Section 3.03, and except for
the Series A participating preferred stock purchase rights of CBS (the
"Rights") issued pursuant to the Rights Agreement, dated as of December 28,
1995, between CBS and First Chicago Trust Company of New York (the "CBS Rights
Agreement"), as of the date of this Agreement there are no options, warrants or
other rights, agreements (including registration rights agreements),
arrangements or commitments of any character relating to the issued or unissued
capital stock of CBS or any of its subsidiaries or obligating CBS or any of its
subsidiaries to issue or sell any shares of capital stock of, or other equity
interests in, CBS or any of its subsidiaries. All shares of capital stock of
CBS and its subsidiaries subject to issuance as aforesaid, upon issuance on the
terms and conditions specified in the instruments pursuant to which they are
issuable, will be duly authorized, validly issued, fully paid and
nonassessable. As of the date of this Agreement, there are no outstanding
contractual material obligations of CBS or any subsidiary to repurchase, redeem
or otherwise acquire any shares of capital stock of CBS or any of its
subsidiaries or to provide material funds to, or make any material investment
(in the form of a loan capital contribution or otherwise) in, any person.

   Section 3.04. Authority Relative to Agreement. CBS has all necessary power
and authority to execute and deliver this Agreement, to perform its obligations
hereunder and to consummate the Merger and the other transactions contemplated
hereby. The execution and delivery of this Agreement by CBS and the
consummation by CBS of the Merger and the other transactions contemplated
hereby have been duly and validly authorized by all necessary corporate action
and no other corporate proceedings on the part of CBS are necessary to
authorize the execution and delivery of this Agreement or to consummate the
Merger and the other transactions contemplated hereby (other than, with respect
to the Merger, the adoption of this Agreement by the affirmative vote of a
majority of the votes cast by all shareholders entitled to vote at the CBS
Stockholders' Meeting (as defined in Section 6.02) and the filing and
recordation of appropriate merger documents as required by Pennsylvania Law).
This Agreement has been duly and validly executed and delivered by CBS and,
assuming the due authorization, execution and delivery by Viacom, this
Agreement constitutes a legal, valid and binding obligation of CBS, enforceable
against CBS in accordance with its terms.

   Section 3.05. No Conflict; Required Filings and Consents. (a) The execution
and delivery of this Agreement by CBS does not, and the performance of this
Agreement by CBS will not, (i) conflict with or violate the Articles of
Incorporation or By-laws of (A) CBS or Infinity or (B) any of its other
subsidiaries, (ii) assuming the consents, approvals, authorizations and waivers
specified in Section 3.05(b) have been received and the waiting periods
referred to therein have expired, and any condition precedent to such consent,
approval,

                                      A-7
<PAGE>

authorization, or waiver has been satisfied, conflict with or violate any
domestic (federal, state or local) or foreign law, rule, regulation, order,
judgment or decree (collectively, "Laws") applicable to CBS or any of its
subsidiaries or by which any property or asset of CBS or any of its
subsidiaries is bound or affected or (iii) result in any breach of or
constitute a default (or an event which with notice or lapse of time or both
would become a default) under, or give to others any right of termination,
amendment, acceleration, or cancellation of, or result in the creation of a
lien or other encumbrance on any property or asset of CBS or any of its
subsidiaries pursuant to, any note, bond, mortgage, indenture or credit
agreement, or, to CBS's knowledge as of the date of this Agreement, any other
contract, agreement, lease, license, permit, franchise or other instrument or
obligation to which CBS or any of its subsidiaries is a party or by which CBS
or any of its subsidiaries or any property or asset of CBS or any of its
subsidiaries is bound or affected, except, in the case of clauses (i)(B), (ii)
and (iii), for any such conflicts, violations, breaches, defaults or other
occurrences of the type referred to above which would not have a CBS Material
Adverse Effect or would not prevent or materially delay the consummation of the
Merger; provided, however, that for purposes of this Section 3.05(a), the
definition of CBS Material Adverse Effect shall be read so as not to include
clause (iii) of the definition thereof.

   (b) The execution and delivery of this Agreement by CBS do not, and the
performance of this Agreement by CBS will not, require any consent, approval,
authorization, waiver or permit of, or filing with or notification to, any
governmental or regulatory authority, domestic, foreign or supranational,
except for applicable requirements of the Exchange Act, the Securities Act of
1933, as amended (the "Securities Act"), state securities or "blue sky" laws
("Blue Sky Laws"), the pre-merger notification arrangements of the Hart-Scott-
Rodino Antitrust Improvements Act of 1976, as amended, and the rules and
regulations thereunder (the "HSR Act"), such filings, approvals and waivers of
the Federal Communications Commission or any successor entity (the "FCC") as
may be required under the Communications Act of 1934, as amended, and the rules
and regulations of the FCC thereunder (collectively, the "Communications Act"),
applicable requirements of the Investment Canada Act of 1985 and the
Competition Act (Canada), any other non-United States competition, antitrust
and investment law, filing and recordation of appropriate merger documents as
required by Delaware Law and Pennsylvania Law and the rules of the NYSE and
except where failure to obtain such consents, approvals, authorizations or
permits, or to make such filings or notifications, would not have a CBS
Material Adverse Effect or would not prevent or materially delay the
consummation of the Merger; provided, however, that for purposes of this
Section 3.05(b), the definition of CBS Material Adverse Effect shall be read so
as not to include clause (iii) of the definition thereof.

   Section 3.06. Permits and Licenses; Contracts. (a) Each of CBS and its
subsidiaries is in possession of all franchises, grants, authorizations,
licenses, permits, easements, variances, exceptions, consents, certificates,
approvals and orders necessary for CBS or any of its subsidiaries to own, lease
and operate the properties of CBS and its subsidiaries or to carry on their
business as it is now being conducted and contemplated to be conducted (the
"CBS Permits"), and no suspension or cancellation of any of the CBS Permits is
pending or, to the knowledge of CBS, threatened, except where the failure to
have, or the suspension or cancellation of, any of the CBS Permits would not
have a CBS Material Adverse Effect. None of CBS or any of its subsidiaries is
in conflict with, or in default or violation of, (i) any Laws applicable to CBS
or any of its subsidiaries or by which any property or asset of CBS or any of
its subsidiaries is bound or affected, (ii) any of the CBS Permits or (iii) any
note, bond, mortgage, indenture, contract, agreement, lease, license, permit,
franchise or other instrument or obligation to which CBS or any of its
subsidiaries is a party or by which CBS or any of its subsidiaries or any
property or asset of CBS or any of its subsidiaries is bound or affected,
except for any such conflicts, defaults or violations that would not have a CBS
Material Adverse Effect.

   (b) Except as would not have a CBS Material Adverse Effect, and to the
knowledge of CBS, except as would not have a material adverse effect on the
Surviving Corporation following the Effective Time, none of CBS or any of its
subsidiaries is a party to any contracts or agreements that limits the ability
of CBS or any of its subsidiaries or, after the Effective Time, Viacom or any
of its subsidiaries, to compete in any line of business or with any person or
engage in any business in any geographic area, in each case except for

                                      A-8
<PAGE>

competition in businesses that neither CBS nor Viacom are currently engaged in
or will reasonably foreseeably engage in.

   (c) CBS and its subsidiaries have operated the radio and television stations
and associated facilities for which CBS or any of its subsidiaries holds
licenses from the FCC, in each case which are owned or operated by CBS and its
subsidiaries (the "CBS Licensed Facilities"), in material compliance with the
terms of the CBS Permits issued by the FCC to CBS and its subsidiaries ("CBS
FCC Licenses"), and in material compliance with the Communications Act, and CBS
and its subsidiaries have timely filed or made all applications, reports and
other disclosures required by the FCC to be filed or made with respect to the
CBS Licensed Facilities and have timely paid all FCC regulatory fees with
respect thereto, in each case except as would not have a CBS Material Adverse
Effect. As of the date hereof, to CBS's knowledge, there is not now pending or
threatened before the FCC any material investigation, proceeding, notice of
violation, order of forfeiture or complaint against CBS or any of its
subsidiaries, relating to any of the CBS Licensed Facilities or FCC regulated
services conducted by CBS that, if adversely decided, would have a CBS Material
Adverse Effect.

   Section 3.07. SEC Filings; Financial Statements. (a) CBS and Infinity have
filed all forms, reports and documents required to be filed by it with the SEC
from December 31, 1996 to the date of this Agreement, including: (i) Annual
Reports on Form 10-K, (ii) Quarterly Reports on Form 10-Q and (iii) proxy
statements relating to CBS's and Infinity's meetings of shareholders (whether
annual or special) (the forms, reports and other documents referred to in
clauses (i), (ii), (iii) and all other forms, reports and other registration
statements filed by CBS or Infinity with the SEC as of the date of this
Agreement, including all amendments and supplements thereto filed with the SEC
as of the date of this Agreement, above being referred to herein, collectively,
as the "CBS SEC Reports"). The CBS SEC Reports, as well as all forms, reports
and documents to be filed by CBS or Infinity with the SEC after the date hereof
and prior to the Effective Time, (i) were or will be prepared in accordance
with the requirements of the Securities Act, and the Exchange Act, as the case
may be, and the rules and regulations thereunder, (ii) did not at the time they
were filed, or will not at the time they are filed, contain any untrue
statement of a material fact or omit to state a material fact required to be
stated therein or necessary in order to make the statements made therein, in
the light of the circumstances under which they were made, not misleading, and
(iii) did not at the time they were filed, or will not at the time they are
filed, omit any documents required to be filed as exhibits thereto. No CBS
subsidiary, except Infinity, is subject to the periodic reporting requirements
of the Exchange Act.

   (b) Each of the financial statements (including, in each case, any notes
thereto) contained in the CBS SEC Reports and each of the financial statements
to be filed by CBS or Infinity with the SEC after the date hereof and prior to
the Effective Time was or will be prepared in accordance with United States
generally accepted accounting principles applied on a consistent basis
throughout the periods indicated (except as may be indicated in the notes
thereto) and each fairly presented in all material respects or will fairly
present in all material respects the consolidated financial position, results
of operations and cash flows of CBS and its subsidiaries as at the respective
dates thereof and for the respective periods indicated therein in accordance
with United States generally accepted accounting principles (subject, in the
case of unaudited statements, to normal and recurring year-end adjustments
which were not and are not expected to be material).

   (c) Except as and to the extent set forth in the CBS SEC Reports, CBS and
its subsidiaries do not have any liability or obligation of any nature (whether
accrued, absolute, contingent or otherwise) other than liabilities and
obligations which, individually or in the aggregate, would not have a CBS
Material Adverse Effect.

   (d) CBS has heretofore furnished to Viacom complete and correct copies of
all material amendments and modifications that have not been filed by CBS or
Infinity with the SEC to all agreements, documents and other instruments that
previously had been filed by CBS or Infinity with the SEC and are currently in
effect.

   Section 3.08. Absence of Certain Changes or Events. (a) Since December 31,
1998, except as disclosed in any CBS SEC Report or as contemplated by this
Agreement, there has not been any change, event

                                      A-9
<PAGE>

or circumstance which, when taken individually or together with all other
changes, events or circumstances, has had or would have a CBS Material Adverse
Effect, and (b) since December 31, 1998 to the date of this Agreement, except
as disclosed in any CBS SEC Report (i) each of CBS and its subsidiaries has
conducted its businesses only in the ordinary course and in a manner consistent
with past practice and (ii) there has not been (A) any material change by CBS
or any of its subsidiaries in its material accounting policies, practices and
procedures, (B) any entry by CBS or any of its subsidiaries into any commitment
or transaction material to CBS and its subsidiaries taken as a whole other than
in the ordinary course of business consistent with past practice, (C) any
declaration, setting aside or payment of any dividend or distribution in
respect of any capital stock of CBS or any of its subsidiaries (other than cash
dividends payable by any wholly owned subsidiary to another subsidiary or CBS),
or (D) any increase in the compensation payable or to become payable to any
corporate officers or heads of divisions of CBS or any of its subsidiaries,
except in the ordinary course of business consistent with past practice.

   Section 3.09. Absence of Litigation. Except as disclosed in any CBS SEC
Report, there is no claim, action, proceeding or investigation pending or, to
the knowledge of CBS, threatened against CBS or any of its subsidiaries, or any
property or asset of CBS or any of its subsidiaries, before any court,
arbitrator or Governmental Authority, in each case except as would not have a
CBS Material Adverse Effect. As of the date of this Agreement, none of CBS, any
of its subsidiaries nor any property or asset of CBS or any of its subsidiaries
is subject to any order, writ, judgment, injunction, decree, determination or
award imposed by any court, arbitration or Governmental Authority, in each case
except as would not have a CBS Material Adverse Effect.

   Section 3.10. Employee Benefit Plans. (a) With respect to each employee
benefit plan, program, arrangement and contract (including, without limitation,
any "employee benefit plan", as defined in Section 3(3) of the Employee
Retirement Income Security Act of 1974, as amended ("ERISA")), maintained or
contributed to by CBS or any of its subsidiaries, or with respect to which CBS
or any of its subsidiaries could incur liability under Section 4069 of ERISA,
other than multiemployer plans within the meaning of Section 3(37) of ERISA
(the "CBS Benefit Plans"), CBS will provide to Viacom within 15 days of the
date of this Agreement a true and correct copy of (i) the most recent annual
report (Form 5500) filed with the Internal Revenue Service (the "IRS"), (ii)
such CBS Benefit Plan, (iii) each trust agreement relating to such CBS Benefit
Plan, (iv) the most recent summary plan description for each CBS Benefit Plan
for which a summary plan description is required, (v) the most recent actuarial
report or valuation relating to a CBS Benefit Plan subject to Title IV of
ERISA, if any, and (vi) the most recent determination letter, if any, issued by
the IRS with respect to any CBS Benefit Plan qualified under Section 401(a) of
the Code. CBS will, promptly following the date of this Agreement, request a
copy of each CBS Benefit Plan that is a multiemployer plan within the meaning
of Section 3(37) of ERISA from the trustees of such multiemployer plan and CBS
shall deliver such copy of the plan to Viacom promptly upon its receipt
thereof.

   (b) Each CBS Benefit Plan has been administered in accordance with its
terms, and in compliance with applicable laws, except as would not have a CBS
Material Adverse Effect. CBS and its subsidiaries have performed all
obligations required to be performed by them under, are not in any respect in
default under or in violation of, and have no knowledge of any default or
violation by any party to, any CBS Benefit Plans, except as would not have a
CBS Material Adverse Effect. With respect to the CBS Benefit Plans, no event
has occurred and, to the knowledge of CBS, there exists no condition or set of
circumstances, in connection with which CBS or any of its subsidiaries is
reasonably likely to be subject to any liability under the terms of such CBS
Benefit Plans, ERISA, the Code or any other applicable Law except as would not,
individually or in the aggregate, have a CBS Material Adverse Effect. Neither
CBS nor any of its subsidiaries has any actual or contingent liability under
Title IV of ERISA (other than the payment of premiums to the Pension Benefit
Guaranty Corporation), including, without limitation, any liability in
connection with (i) the termination or reorganization of any employee benefit
plan subject to Title IV of ERISA or (ii) the withdrawal from any multiemployer
plan or multiple employer plan, and no fact or event exists which is reasonably
likely to give rise to any such liability, in each case except as would not,
individually or in the aggregate, have a CBS Material Adverse Effect.

                                      A-10
<PAGE>

   (c) CBS has made available to Viacom: (i) copies of all employment
agreements with the top five most highly compensated executive officers of CBS
and its subsidiaries; (ii) copies of all material severance agreements,
programs and policies of CBS or any of its subsidiaries with or relating to its
or its subsidiaries' employees; and (iii) copies of all material plans,
programs, agreements and other arrangements of CBS or any of its subsidiaries
with or relating to its or its subsidiaries' employees which contain change in
control provisions. Neither the execution and delivery of this Agreement nor
the consummation of the transactions contemplated hereby will (i) result in any
payment (including, without limitation, severance, unemployment compensation,
"golden parachute" or otherwise) becoming due to any director, officer or
employee of CBS or any of its subsidiaries from CBS or any of its affiliates
under any CBS Benefit Plan or otherwise, which payment is material in relation
to the compensation previously provided to such individual (other than payments
resulting from a change in responsibilities or reporting obligations of
individual employees), (ii) materially increase any benefits otherwise payable
under any CBS Benefit Plan, which increase is material in relation to the
benefits previously provided or (iii) result in any acceleration of the time of
payment or vesting of any material benefits.

   (d) Each CBS Benefit Plan that is intended to be qualified under Section
401(a) of the Code or Section 401(k) of the Code has timely received a
favorable determination letter from the IRS covering all of the provisions
applicable to the Plan for which determination letters are currently available
that the CBS Benefit Plan is so qualified and each trust established in
connection with any CBS Benefit Plan which is intended to be exempt from
federal income taxation under Section 501(a) of the Code has received a
determination letter from the IRS that it is so exempt, and no fact or event
has occurred since the date of such determination letter or letters from the
IRS which is reasonably likely to adversely affect the qualified status of any
such CBS Benefit Plan or the exempt status of any such trust.

   Section 3.11. Labor Matters. There is no labor dispute, strike or work
stoppage against CBS or any of its subsidiaries pending or, to the knowledge of
CBS, threatened which would reasonably be expected to interfere with the
respective business activities of CBS or any of its subsidiaries, except for
such disputes, strikes or work stoppages which would not have a CBS Material
Adverse Effect. There is no charge or complaint against CBS or any of its
subsidiaries by the National Labor Relations Board or any comparable state
agency pending or threatened in writing, except for such charges or complaints
(or related unfair labor practices) which would not have a CBS Material Adverse
Effect.

   Section 3.12. Environmental Matters. Except as would not, individually or in
the aggregate, have a CBS Material Adverse Effect:

     (a) CBS and its subsidiaries (i) are in compliance with all, and are not
  subject to any asserted liability or, to CBS's knowledge, any liability
  (including liability with respect to current or former subsidiaries or
  operations), in each case with respect to any, Environmental Laws (as
  defined below), (ii) hold or have applied for all Environmental Permits (as
  defined below) and (iii) are in compliance with their respective
  Environmental Permits;

     (b) neither CBS nor any CBS subsidiary has received any written notice,
  demand, letter, claim or request for information alleging that CBS or any
  of its subsidiaries is or may be in violation of, or liable under, any
  Environmental Law;

     (c) neither CBS nor any of its subsidiaries (i) has entered into or
  agreed to any consent decree or order or is subject to any judgment, decree
  or judicial order relating to compliance with Environmental Laws,
  Environmental Permits or the investigation, sampling, monitoring,
  treatment, remediation, removal or cleanup of Hazardous Materials (as
  defined below) and, to the knowledge of CBS, no investigation, litigation
  or other proceeding is pending or threatened in writing with respect
  thereto, or (ii) is an indemnitor in connection with any threatened or
  asserted claim by any third-party indemnitee for any liability under any
  Environmental Law or relating to any Hazardous Materials; and

                                      A-11
<PAGE>

     (d) none of the real property owned or leased by CBS or any of its
  subsidiaries is listed or, to the knowledge of CBS, proposed for listing on
  the "National Priorities List" under CERCLA, as updated through the date
  hereof, or any similar state or foreign list of sites requiring
  investigation or cleanup.

     For purposes of this Agreement:

     "CERCLA" means the Comprehensive Environmental Response, Compensation
  and Liability Act of 1980, as amended as of the date hereof.

     "Environmental Laws" means any applicable federal, state, local or
  foreign statute, law, ordinance, regulation, rule, code, treaty, writ or
  order and any enforceable judicial or administrative interpretation
  thereof, including any judicial or administrative order, consent decree,
  judgment, stipulation, injunction, permit, authorization, policy, opinion,
  or agency requirement, in each case having the force and effect of law,
  relating to the pollution, protection, investigation or restoration of the
  environment, health and safety or natural resources, including those
  relating to the use, handling, presence, transportation, treatment,
  storage, disposal, release, threatened release or discharge of Hazardous
  Materials or noise, odor, wetlands, pollution, contamination or any injury
  or threat of injury to persons or property or to the siting, construction,
  operation, closure and post-closure care of waste disposal, handling and
  transfer facilities.

     "Environmental Permits" means any permit, approval, identification
  number, license and other authorization required under any Environmental
  Law.

     "Hazardous Materials" means (i) any petroleum, petroleum products, by-
  products or breakdown products, radioactive materials, asbestos-containing
  materials or polychlorinated biphenyls or (ii) any chemical, material or
  other substance defined or regulated as toxic or hazardous or as a
  pollutant or contaminant or waste under any Environmental Law.

   Section 3.13. Trademarks, Patents and Copyrights. Except as would not have a
CBS Material Adverse Effect, CBS and its subsidiaries own, or possess adequate
licenses or other valid rights to use, all material patents, patent rights,
trademarks, trademark rights, trade names, trade name rights, copyrights,
service marks, service mark rights, trade secrets, applications to register,
and registrations for, the foregoing trademarks, know-how and other proprietary
rights and information used in connection with the business of CBS and its
subsidiaries as currently conducted, and no assertion or claim has been made in
writing challenging the validity of any of the foregoing which would have a CBS
Material Adverse Effect. To the knowledge of CBS, the conduct of the business
of CBS and its subsidiaries as currently conducted does not conflict in any way
with any patent, patent right, license, trademark, trademark right, trade name,
trade name right, service mark or copyright of any third party, except for such
conflicts which would not have a CBS Material Adverse Effect.

   Section 3.14. Taxes. (a) For purposes of this Agreement, "Tax" or "Taxes"
means any and all taxes, fees, levies, duties, tariffs, imposts, and other
charges of any kind (together with any and all interest, penalties, additions
to tax and additional amounts imposed with respect thereto) imposed by any
governmental or taxing authority including, without limitation: taxes or other
charges on or with respect to income, franchises, windfall or other profits,
gross receipts, property, sales, use, capital stock, payroll, employment,
social security, workers' compensation, unemployment compensation, or net
worth; taxes or other charges in the nature of excise, withholding, ad valorem,
stamp, transfer, value added, or gains taxes; license, registration and
documentation fees; and customs' duties, tariffs, and similar charges.

   (b) Except as would not have a CBS Material Adverse Effect: (i) each of CBS
and each of its subsidiaries has timely filed all federal, state, local and
foreign tax returns and reports (including extensions) required to be filed by
it and has paid and discharged all Taxes shown as due thereon and has paid all
of such other Taxes as are due, other than such payments as are being contested
in good faith by appropriate proceedings; (ii) neither the IRS nor any other
taxing authority or agency, domestic or foreign, is now asserting or, to the
knowledge of CBS after due inquiry, threatening to assert against CBS or any of
its subsidiaries any deficiency or claim for Taxes; (iii) no waiver of any
statute of limitations with respect to, or any extension of a period for the
assessment of, any Tax has been granted by CBS or any of its subsidiaries; (iv)
the accruals and reserves for

                                      A-12
<PAGE>

Taxes reflected in the CBS balance sheet included in its Annual Report on Form
10-K for fiscal year 1998 and the most recent quarterly financial statements
are adequate to cover all Taxes accruable through the date thereof in
accordance with United States generally accepted accounting principles; (v) no
election under Section 341(f) of the Code has been made by CBS or any of its
subsidiaries; (vi) CBS and each of its subsidiaries has withheld or collected
and paid over to the appropriate governmental authorities or is properly
holding for such payment all Taxes required by law to be withheld or collected;
(vii) there are no liens for Taxes upon the assets of CBS or any of its
subsidiaries, other than liens for Taxes that are being contested in good faith
by appropriate proceedings and (viii) CBS has not constituted a "distributing
corporation" (within the meaning of Section 355(a)(1)(A) of the Code) in a
distribution of stock qualifying for tax-free treatment under Section 355 of
the Code in the two years prior to the date of this Agreement.

   Section 3.15. Tax Matters. None of CBS or any of its affiliates has taken or
agreed to take any action that would prevent the Merger from constituting a
transaction qualifying under Section 368(a) of the Code. None of CBS or any of
its affiliates or agents is aware of any agreement, plan or other circumstance
that would prevent the Merger from qualifying under Section 368(a) of the Code,
that could prevent them from providing representations required in Sections
7.02(c) or 7.03(c), or that could prevent the opinions described in such
Sections from being given and to the knowledge of CBS, the Merger will so
qualify.

   Section 3.16. Year 2000 Compliance. (a) CBS has adopted a plan that it
believes will cause CBS Systems (as defined below) to be CBS Year 2000
Compliant (as defined below) (such plan, as it may be amended, modified or
supplemented from time to time being, the "CBS Year 2000 Plan") in all material
respects. CBS has taken, and between the date of this Agreement and the
Effective Time will continue to take, all reasonable steps to implement the CBS
Year 2000 Plan with respect to the CBS Systems. Notwithstanding anything in
this Section 3.16 to the contrary, CBS does not represent or warrant that CBS
Systems (or any other operations, systems, equipment or software of CBS or its
subsidiaries or any of their respective affiliates) are or will be CBS Year
2000 Compliant at or prior to the Effective Time, regardless of whether the CBS
Year 2000 Plan has or has not been implemented or complied with.

   (b) For purposes of this Section 3.16, (i) "CBS Systems" shall mean all
computer, hardware, software, systems, and equipment (including embedded
microcontrollers in non-computer equipment) embedded within or required to
operate the current products of CBS and its subsidiaries, and/or material to or
necessary for CBS and its subsidiaries to carry on their respective businesses
as currently conducted; and (ii) "CBS Year 2000 Compliant" means that CBS
Systems will (A) manage, accept, process, store and output data involving dates
reasonably expected to be encountered in the foreseeable future and (B)
accurately process date data from, into and between the 20th and 21st centuries
and each date during the years 1999 and 2000.

   Section 3.17. Opinion of Financial Advisors. CBS has received the written
opinion of Evercore Group Inc. (the "CBS Financial Advisor") on or prior to the
date of this Agreement, to the effect that, as of the date of such opinion, the
Exchange Ratio is fair to the shareholders of CBS from a financial point of
view, and CBS will deliver a copy of such opinion to Viacom promptly after the
date of this Agreement.

   Section 3.18. Vote Required. The affirmative vote of a majority of the votes
cast by all shareholders entitled to vote at the CBS Stockholders' Meeting is
the only vote of the holders of any class or series of capital stock of CBS
necessary to adopt this Agreement.

   Section 3.19. Brokers. No broker, finder or investment banker (other than
the CBS Financial Advisor) is entitled to any brokerage, finder's or other fee
or commission in connection with the Merger based upon arrangements made by or
on behalf of CBS.

   Section 3.20. Pennsylvania Law. Pursuant to its By-laws, CBS has opted out
of anti-takeover provisions contained in the Pennsylvania Law relating to (i)
"control share acquisitions" (Sections 2561 through 2568 of the Pennsylvania
Law) and (ii) disgorgement of profits by certain controlling shareholders
following attempts to acquire control (Sections 2571 through 2576 of the
Pennsylvania Law). Section 2538 of

                                      A-13
<PAGE>

the Pennsylvania Law relating to "interested shareholder transactions" and
Sections 2551 through 2556 of the Pennsylvania Law relating to "business
combinations with interested shareholders" are not applicable to this Agreement
or the transactions contemplated hereby.

   Section 3.21. Rights Agreement. As of the date of this Agreement, the copy
of the Rights Agreement, including all amendments and exhibits thereto, that is
set forth as an exhibit to CBS's Form 8-K, filed with the SEC on January 9,
1996, is a complete and correct copy thereof. Neither the execution of this
Agreement nor the consummation of the Merger will (A) cause the Rights issued
pursuant to the Rights Agreement to become exercisable, (B) cause Viacom to
become an Acquiring Person or a Principal Party (as each term is defined in the
Rights Agreement) or (C) give rise to a Distribution Date (as such term is
defined in the Rights Agreement).

   Section 3.22. Gaylord. CBS has entered into the Gaylord Agreement and the
Gaylord Agreement is in full force and effect. Pursuant to the Gaylord
Agreement, Gaylord has agreed, under certain circumstances, to vote its shares
of CBS Series B Preferred Stock in favor of adopting this Agreement, if
required under applicable law, and has, under certain circumstances,
constituted and appointed CBS as Gaylord's true and lawful proxy (the "Gaylord
Proxy"), with full power of substitution, for and in its name place and stead,
to vote each of Gaylord's shares of CBS Series B Preferred Stock in favor of
the adoption of this Agreement at the CBS Stockholders' Meeting and any
adjournment or postponement thereof. CBS has not waived or transferred to a
third party any of its rights to vote Gaylord's shares under the Gaylord Proxy.

                                   ARTICLE IV

                    Representations and Warranties of Viacom

   Except as disclosed in the report on Form 10-K dated March 31, 1999 for the
year ended December 31, 1998, the reports on Form 10-Q and Form 8-K since
December 31, 1998 or the proxy statement dated April 16, 1999, in each case in
the form filed by Viacom with the SEC or in a separate disclosure schedule
which has been delivered by Viacom to CBS prior to the execution of this
Agreement (the "Viacom Disclosure Schedule") (each section of which qualifies
the correspondingly numbered representation and warranty or covenant to the
extent specified therein and such other representations and warranties or
covenants to the extent a matter in such section is disclosed in such a way as
to make its relevance to the information called for by such other
representation and warranty or covenant readily apparent), Viacom hereby
represents and warrants to CBS that:

   Section 4.01. Organization and Qualification; Subsidiaries. Each of Viacom
and its subsidiaries is a corporation or entity duly incorporated or formed,
validly existing and in good standing, under the laws of its jurisdiction of
incorporation or formation, and has the requisite corporate power and authority
and all necessary governmental approvals to own, lease and operate its
properties and to carry on its business as it is now being conducted, except
where the failure to have such power, authority and governmental approvals
would not have a Viacom Material Adverse Effect (as defined below). Each of
Viacom and its subsidiaries is duly qualified or licensed as a foreign
corporation to do business, and is in good standing, in each jurisdiction where
the character of the properties owned, leased or operated by it or the nature
of its business makes such qualification or licensing necessary, except for
such failures to be so qualified or licensed and in good standing that would
not have a Viacom Material Adverse Effect. The term "Viacom Material Adverse
Effect" means any change, effect or circumstance that is or is reasonably
likely to be materially adverse to the business, results of operations or
financial condition of Viacom and its subsidiaries taken as a whole, other than
any change, effect or circumstance relating to or resulting from (i) general
changes in the media or entertainment industries or the advertising markets,
(ii) changes in general economic conditions or securities markets in general or
(iii) this Agreement or the transactions contemplated hereby or the
announcement thereof.

   Section 4.02. Certificate of Incorporation and By-Laws. Viacom has made
available to CBS a complete and correct copy of the Certificate of
Incorporation and the By-laws, each as amended to date, of

                                      A-14
<PAGE>

Viacom and Blockbuster Corporation ("Blockbuster"). The Certificates of
Incorporation and By-laws (or equivalent organizational documents) of Viacom
and its subsidiaries are in full force and effect. Except as would not have a
Viacom Material Adverse Effect, none of Viacom or its subsidiaries is in
violation of any provision of its Certificate of Incorporation or By-laws (or
equivalent organizational documents).

   Section 4.03. Capitalization. The authorized capital stock of Viacom
consists of 500,000,000 shares of Viacom Class A Common Stock, 3,000,000,000
shares of Viacom Class B Common Stock and 200,000,000 shares of Preferred
Stock, par value $.01 per share, of Viacom ("Viacom Preferred Stock"). As of
September 3, 1999 (a) 139,923,921 shares of Viacom Class A Common Stock and
605,085,135 shares of Viacom Class B Common Stock were issued and outstanding,
all of which were validly issued, fully paid and nonassessable, (b) 1,356,400
shares of Viacom Class A Common Stock and 47,101,300 shares of Viacom B Common
Stock were held in the treasury of Viacom, (c) no shares of Viacom Class A
Common Stock or Viacom Class B Common Stock were held by subsidiaries of Viacom
and (d) as of September 3, 1999, approximately 1,898,946 shares of Viacom Class
B Common Stock were reserved for future issuance pursuant to stock options or
stock incentive rights (collectively "Viacom Options") granted pursuant to
Viacom's stock option plans and arrangements (the "Viacom Stock Option Plans").
As of September 3, 1999, no shares of Viacom Preferred Stock were issued and
outstanding. As of the date of this Agreement, except for the issuance of
Viacom Class B Common Stock pursuant to the exercise of Viacom Options and
options to purchase 11,600,000 shares of Class A Common Stock, par value $.01
per share, of Blockbuster (the "Blockbuster Options") outstanding prior to
September 3, 1999, no shares of capital stock of Viacom or any of its
subsidiaries have been issued since September 3, 1999. Except as set forth in
this Section 4.03, as of the date of this Agreement, there are no options,
warrants or other rights, agreements (including registration rights
agreements), arrangements or commitments of any character relating to the
issued or unissued capital stock of Viacom or any of its subsidiaries or
obligating Viacom or any of its subsidiaries to issue or sell any shares of
capital stock of, or other equity interests in, Viacom or any of its
subsidiaries. All shares of capital stock of Viacom and its subsidiaries
subject to issuance as aforesaid, upon issuance on the terms and conditions
specified in the instruments pursuant to which they are issuable, will be duly
authorized, validly issued, fully paid and nonassessable. As of the date of
this Agreement, there are no outstanding contractual material obligations of
Viacom or any subsidiary to repurchase, redeem or otherwise acquire any shares
of capital stock of Viacom or any of its subsidiaries or to provide material
funds to, or make any material investment (in the form of a loan capital
contribution or otherwise) in, any person. The Stockholder (as defined in the
Parent Voting Agreements) is the holder of a majority of the issued and
outstanding shares of Viacom Class A Common Stock.

   Section 4.04. Authority Relative to Agreement. Viacom has all necessary
power and authority to execute and deliver this Agreement, to perform its
obligations hereunder and to consummate the Merger and the other transactions
contemplated hereby. The execution and delivery of this Agreement by Viacom and
the consummation by Viacom of the Merger and the other transactions
contemplated hereby have been duly and validly authorized by all necessary
corporate action and no other corporate proceedings on the part of Viacom are
necessary to authorize the execution and delivery of this Agreement or to
consummate the Merger and the other transactions contemplated hereby (other
than, with respect to the Merger, the approval of the Viacom Proposal by the
holders of a majority of the then outstanding shares of Viacom Class A Common
Stock and the filing and recordation of appropriate merger documents as
required by Delaware Law and Pennsylvania Law). This Agreement has been duly
and validly executed and delivered by Viacom and, assuming the due
authorization, execution and delivery by CBS, this Agreement constitutes a
legal, valid and binding obligation of Viacom, enforceable against Viacom in
accordance with its terms.

   Section 4.05. No Conflict; Required Filings and Consents. (a) The execution
and delivery of this Agreement by Viacom does not, and the performance of this
Agreement by Viacom and the performance by Parent of the Parent Voting
Agreements will not, (i) conflict with or violate the Certificate of
Incorporation or By-laws (or similar organization documents) of (A) Viacom or
Blockbuster or (B) any of its other subsidiaries, (ii) assuming the consents,
approvals and authorizations specified in Section 4.05(b) have been received
and the waiting periods referred to therein have expired, and any condition
precedent to such consent, approval,

                                      A-15
<PAGE>

authorization, or waiver has been satisfied, conflict with or violate any Law
applicable to Viacom or any of its subsidiaries or by which any property or
asset of Viacom or any of its subsidiaries is bound or affected or (iii) result
in any breach of or constitute a default (or an event which with notice or
lapse of time or both would become a default) under, or give to others any
right of termination, amendment, acceleration or cancellation of, or result in
the creation of a lien or other encumbrance on any property or asset of Viacom
or any of its subsidiaries pursuant to, any note, bond, mortgage, indenture or
credit agreement, or, to Viacom's knowledge as of the date of this Agreement,
any other, contract, agreement, lease, license, permit, franchise or other
instrument or obligation to which Viacom or any of its subsidiaries is a party
or by which Viacom or any of its subsidiaries or any property or asset of
Viacom or any of its subsidiaries is bound or affected, except, in the case of
clauses (i)(B), (ii) and (iii), for any such conflicts, violations, breaches,
defaults or other occurrences of the type referred to above which would not
have a Viacom Material Adverse Effect or would not prevent or materially delay
the consummation of the Merger; provided, however, that for purposes of this
Section 4.05(a), the definition of Viacom Material Adverse Effect shall be read
so as not to include clause (iii) of the definition thereof.

   (b) The execution and delivery of this Agreement by Viacom do not, the
performance of this Agreement by Viacom and the performance by Parent of the
Parent Voting Agreements will not, require any consent, approval,
authorization, waiver or permit of, or filing with or notification to, any
governmental or regulatory authority, domestic, foreign or supranational,
except for applicable requirements of the Exchange Act, the Securities Act,
Blue Sky Laws, the HSR Act, such filings, approvals and waivers as may be
required by the Communications Act, applicable requirements of the Investment
Canada Act of 1985 and the Competition Act (Canada), any other non-United
States competition, antitrust and investment law, filing and recordation of
appropriate merger documents as required by Delaware Law and Pennsylvania Law
and the rules of the NYSE and except where failure to obtain such consents,
approvals, authorizations or permits, or to make such filings or notifications,
would not have a Viacom Material Adverse Effect or would not prevent or
materially delay the consummation of the Merger; provided, however, that for
purposes of this Section 4.05(b), the definition of Viacom Material Adverse
Effect shall be read so as not to include clause (iii) of the definition
thereof.

   Section 4.06. Permits and Licenses; Contracts. (a) Each of Viacom and its
subsidiaries is in possession of all franchises, grants, authorizations,
licenses, permits, easements, variances, exceptions, consents, certificates,
approvals and orders necessary for Viacom or any of its subsidiaries to own,
lease and operate the properties of Viacom and its subsidiaries or to carry on
their business as it is now being conducted and contemplated to be conducted
(the "Viacom Permits"), and no suspension or cancellation of any of the Viacom
Permits is pending or, to the knowledge of Viacom, threatened, except where the
failure to have, or the suspension or cancellation of, any of the Viacom
Permits would not have a Viacom Material Adverse Effect. None of Viacom or any
of its subsidiaries is in conflict with, or in default or violation of (i) any
Laws applicable to Viacom or any of its subsidiaries or by which any property
or asset of Viacom or any of its subsidiaries is bound or affected, (ii) any of
the Viacom Permits, or (iii) any note, bond, mortgage, indenture, contract,
agreement, lease, license, permit, franchise or other instrument or obligation
to which Viacom or any of its subsidiaries is a party or by which Viacom or any
of its subsidiaries or any property or asset of Viacom or any of its
subsidiaries is bound or affected, except for any such conflicts, defaults or
violations that would not have a Viacom Material Adverse Effect.

   (b) Except as would not have a Viacom Material Adverse Effect, and to the
knowledge of Viacom, except as would not have a material adverse effect on the
Surviving Corporation following the Effective Time, none of Viacom or any of
its subsidiaries is a party to any contracts or agreements that limits the
ability of Viacom or any of its subsidiaries to compete in any line of business
or with any person or engage in any business in any geographic area, in each
case except for competition in businesses that neither CBS nor Viacom are
currently engaged in or will reasonably foreseeably engage in.

   (c) Viacom and its subsidiaries have operated the radio and television
stations and associated facilities for which Viacom or any of its subsidiaries
holds licenses from the FCC, in each case which are owned or operated by Viacom
and its subsidiaries (the "Viacom Licensed Facilities"), in material compliance
with the

                                      A-16
<PAGE>

terms of the Viacom Permits issued by the FCC to Viacom and its subsidiaries
("Viacom FCC Licenses"), and in material compliance with the Communications
Act, and Viacom and its subsidiaries have timely filed or made all
applications, reports and other disclosures required by the FCC to be filed or
made with respect to the Viacom Licensed Facilities and have timely paid all
FCC regulatory fees with respect thereto, in each case except as would not have
a Viacom Material Adverse Effect. As of the date hereof, to Viacom's knowledge,
there is not now pending or threatened before the FCC any material
investigation, proceeding, notice of violation, order of forfeiture or
complaint against Viacom or any of its subsidiaries, relating to any of the
Viacom Licensed Facilities or FCC regulated services conducted by CBS that, if
adversely decided, would have a Viacom Material Adverse Effect.

   Section 4.07. SEC Filings; Financial Statements. (a) Viacom and Blockbuster
have filed all forms, reports and documents required to be filed by it with the
SEC from December 31, 1996 to the date of this Agreement, including: (i) Annual
Reports on Form 10-K, (ii) Quarterly Reports on Form 10-Q and (iii) proxy
statements relating to Viacom's and Blockbuster's meetings of stockholders
(whether annual or special) (the forms, reports and other documents referred to
in clauses (i), (ii), (iii) and all other forms, reports and other registration
statements filed by Viacom or Blockbuster with the SEC as of the date of this
Agreement, including all amendments and supplements thereto filed with the SEC
as of the date of this Agreement, above being referred to herein, collectively,
as the "Viacom SEC Reports"). The Viacom SEC Reports, as well as all forms,
reports and documents to be filed by Viacom or Blockbuster with the SEC after
the date hereof and prior to the Effective Time, (i) were or will be prepared
in accordance with the requirements of the Securities Act, and the Exchange
Act, as the case may be, and the rules and regulations thereunder, (ii) did not
at the time they were filed, or will not at the time they are filed, contain
any untrue statement of a material fact or omit to state a material fact
required to be stated therein or necessary in order to make the statements made
therein, in the light of the circumstances under which they were made, not
misleading, and (iii) did not at the time they were filed, or will not at the
time they are filed, omit any documents required to be filed as exhibits
thereto. No Viacom subsidiary, except Blockbuster, is subject to the periodic
reporting requirements of the Exchange Act.

   (b) Each of the financial statements (including, in each case, any notes
thereto) contained in the Viacom SEC Reports and each of the financial
statements to be filed by Viacom or Blockbuster with the SEC after the date
hereof and prior to the Effective Time was or will be prepared in accordance
with United States generally accepted accounting principles applied on a
consistent basis throughout the periods indicated (except as may be indicated
in the notes thereto) and each fairly presented in all material respects or
will fairly present in all material respects the consolidated financial
position, results of operations and cash flows of Viacom and its subsidiaries
as at the respective dates thereof and for the respective periods indicated
therein in accordance with United States generally accepted accounting
principles (subject, in the case of unaudited statements, to normal and
recurring year-end adjustments which were not and are not expected to be
material).

   (c) Except as and to the extent set forth in the Viacom SEC Reports, Viacom
and its subsidiaries do not have any liability or obligation of any nature
(whether accrued, absolute, contingent or otherwise) other than liabilities and
obligations which, individually or in the aggregate, would not have a Viacom
Material Adverse Effect.

   (d) Viacom has heretofore furnished to CBS complete and correct copies of
all material amendments and modifications that have not been filed by Viacom or
Blockbuster with the SEC to all agreements, documents and other instruments
that previously had been filed by Viacom or Blockbuster with the SEC and are
currently in effect.

   Section 4.08. Absence of Certain Changes or Events. (a) Since December 31,
1998, except as disclosed in any Viacom SEC Report or as contemplated by this
Agreement, there has not been any change, event or circumstance which, when
taken individually or together with all other changes, events or circumstances,
has had or would have a Viacom Material Adverse Effect, and (b) since December
31, 1998 to the date of this Agreement, except as disclosed in any Viacom SEC
Reports (i) each of Viacom and its subsidiaries has conducted its businesses
only in the ordinary course and in a manner consistent with past

                                      A-17
<PAGE>

practice and (ii) there has not been (A) any material change by Viacom or any
of its subsidiaries in its material accounting policies, practices and
procedures, (B) any entry by Viacom or any of its subsidiaries into any
commitment or transaction material to Viacom and its subsidiaries taken as a
whole other than in the ordinary course of business consistent with past
practice, (C) any declaration, setting aside or payment of any dividend or
distribution in respect of any capital stock of Viacom or any of its
subsidiaries (other than cash dividends payable by any wholly owned subsidiary
to another subsidiary or Viacom), or (D) any increase in the compensation
payable or to become payable to any corporate officers or heads of divisions of
Viacom or any of its subsidiaries, except in the ordinary course of business
consistent with past practice.

   Section 4.09. Absence of Litigation. Except as disclosed in any Viacom SEC
Report, there is no claim, action, proceeding or investigation pending or, to
the knowledge of Viacom, threatened against Viacom or any of its subsidiaries,
or any property or asset of Viacom or any of its subsidiaries, before any
court, arbitrator or Governmental Authority, in each case except as would not
have a Viacom Material Adverse Effect. As of the date of this Agreement, none
of Viacom, any of its subsidiaries nor any property or asset of Viacom or any
of its subsidiaries is subject to any order, writ, judgment, injunction,
decree, determination or award imposed by any court, arbitration or
Governmental Authority, in each case except as would not have a Viacom Material
Adverse Effect.

   Section 4.10. Employee Benefit Plans. (a) With respect to each employee
benefit plan, program, arrangement and contract (including, without limitation,
any "employee benefit plan", as defined in Section 3(3) of ERISA), maintained
or contributed to by Viacom or any of its subsidiaries, or with respect to
which Viacom or any of its subsidiaries could incur liability under Section
4069 of ERISA, other than multiemployer plans within the meaning of Section
3(37) of ERISA (the "Viacom Benefit Plans"), Viacom will provide to CBS within
15 days of this Agreement a true and correct copy of (i) the most recent annual
report (Form 5500) filed with the IRS, (ii) such Viacom Benefit Plan, (iii)
each trust agreement relating to such Viacom Benefit Plan, (iv) the most recent
summary plan description for each Viacom Benefit Plan for which a summary plan
description is required, (v) the most recent actuarial report or valuation
relating to a Viacom Benefit Plan subject to Title IV of ERISA, if any, and
(vi) the most recent determination letter, if any, issued by the IRS with
respect to any Viacom Benefit Plan qualified under Section 401(a) of the Code.
Viacom will promptly following the date of this Agreement request a copy of
each Viacom Benefit Plan that is a multiemployer plan within the meaning of
Section 3(37) of ERISA from the trustees of such multiemployer plan and Viacom
shall deliver such copy of the plan to CBS promptly upon its receipt thereof.

   (b) Each Viacom Benefit Plan has been administered in accordance with its
terms, and in compliance with applicable laws, except as would not have a
Viacom Material Adverse Effect. Viacom and its subsidiaries have performed all
obligations required to be performed by them under, are not in any respect in
default under or in violation of, and have no knowledge of any default or
violation by any party to, any Viacom Benefit Plans, except as would not have a
Viacom Material Adverse Effect. With respect to the Viacom Benefit Plans, no
event has occurred and, to the knowledge of Viacom, there exists no condition
or set of circumstances, in connection with which Viacom or any of its
subsidiaries is reasonably likely to be subject to any liability under the
terms of such Viacom Benefit Plans, ERISA, the Code or any other applicable Law
except as would not have a Viacom Material Adverse Effect. Neither Viacom nor
any of its subsidiaries has any actual or contingent liability under Title IV
of ERISA (other than the payment of premiums to the Pension Benefit Guaranty
Corporation) except as would not have a Viacom Material Adverse Effect. Neither
Viacom nor any of its subsidiaries has any actual or contingent liability under
Title IV of ERISA (other than the payment of premiums to the Pension Benefit
Guaranty Corporation), including, without limitation, any liability in
connection with (i) the termination or reorganization of any employee benefit
plan subject to Title IV of ERISA or (ii) the withdrawal from any multiemployer
plan or multiple employer plan, and no fact or event exists which is reasonably
likely to give rise to any such liability, except as would not, individually or
in the aggregate, have a Viacom Material Adverse Effect.

   (c) Viacom has made available to CBS (i) copies of all employment agreements
with the top five most highly compensated executive officers of Viacom or any
of its subsidiaries; (ii) copies of all material

                                      A-18
<PAGE>

severance agreements, programs and policies of Viacom or any of its
subsidiaries with or relating to its or its subsidiaries' employees; and (iii)
copies of all material plans, programs, agreements and other arrangements of
Viacom or any of its subsidiaries with or relating to its or its subsidiaries'
employees which contain change in control provisions. Neither the execution and
delivery of this Agreement nor the consummation of the transactions
contemplated hereby will (i) result in any payment (including, without
limitation, severance, unemployment compensation, "golden parachute" or
otherwise) becoming due to any director, officer or employee of Viacom or any
of its subsidiaries from Viacom or any of its affiliates under any Viacom
Benefit Plan or otherwise, which payment is material in relation to the
compensation previously provided to such individual (other than payments
resulting from a change in responsibilities or reporting obligations of
individual employees), (ii) materially increase any benefits otherwise payable
under any Viacom Benefit Plan, which increase is material in relation to the
benefits previously provided or (iii) result in any acceleration of the time of
payment or vesting of any material benefits.

   (d) Each Viacom Benefit Plan that is intended to be qualified under Section
401(a) of the Code or Section 401(k) of the Code has timely received a
favorable determination letter from the IRS covering all of the provisions
applicable to the Plan for which determination letters are currently available
that the Viacom Benefit Plan is so qualified and each trust established in
connection with any Viacom Benefit Plan which is intended to be exempt from
federal income taxation under Section 501(a) of the Code has received a
determination letter from the IRS that it is so exempt, and no fact or event
has occurred since the date of such determination letter or letters from the
IRS which is reasonably likely to adversely affect the qualified status of any
such Viacom Benefit Plan or the exempt status of any such trust.

   Section 4.11. Labor Matters. There is no labor dispute, strike or work
stoppage against Viacom or any of its subsidiaries pending or, to the knowledge
of Viacom, threatened which would reasonably be expected to interfere with the
respective business activities of Viacom or any of its subsidiaries, except for
such disputes, strikes or work stoppages which would not have a Viacom Material
Adverse Effect. There is no charge or complaint against Viacom or any of its
subsidiaries by the National Labor Relations Board or any comparable state
agency pending or threatened in writing, except for such charges or complaints
(or related unfair labor practices) which would not have a Viacom Material
Adverse Effect.

   Section 4.12. Environmental Matters. Except as would not, individually or in
the aggregate, have a Viacom Material Adverse Effect:

     (a) Viacom and its subsidiaries (i) are in compliance with all, and are
  not subject to any asserted liability or, to Viacom's knowledge, any
  liability (including liability with respect to current or former
  subsidiaries or operations), in each case with respect to any,
  Environmental Laws (as defined below), (ii) hold or have applied for all
  Environmental Permits (as defined below) and (iii) are in compliance with
  their respective Environmental Permits;

     (b) neither Viacom nor any Viacom subsidiary has received any written
  notice, demand, letter, claim or request for information alleging that
  Viacom or any of its subsidiaries is or may be in violation of, or liable
  under, any Environmental Law;

     (c) neither Viacom nor any of its subsidiaries (i) has entered into or
  agreed to any consent decree or order or is subject to any judgment, decree
  or judicial order relating to compliance with Environmental Laws,
  Environmental Permits or the investigation, sampling, monitoring,
  treatment, remediation, removal or cleanup of Hazardous Materials (as
  defined below) and, to the knowledge of Viacom, no investigation,
  litigation or other proceeding is pending or threatened in writing with
  respect thereto, or (ii) is an indemnitor in connection with any threatened
  or asserted claim by any third-party indemnitee for any liability under any
  Environmental Law or relating to any Hazardous Materials; and

     (d) none of the real property owned or leased by Viacom or any of its
  subsidiaries is listed or, to the knowledge of Viacom, proposed for listing
  on the "National Priorities List" under CERCLA, as updated through the date
  hereof, or any similar state or foreign list of sites requiring
  investigation or cleanup.

                                      A-19
<PAGE>

   Section 4.13. Trademarks, Patents and Copyrights. Except as would not have a
Viacom Material Adverse Effect, Viacom and its subsidiaries own, or possess
adequate licenses or other valid rights to use, all material patents, patent
rights, trademarks, trademark rights, trade names, trade name rights,
copyrights, service marks, service mark rights, trade secrets, applications to
register, and registrations for, the foregoing trademarks, service marks, know-
how and other proprietary rights and information used in connection with the
business of Viacom and its subsidiaries as currently conducted, and no
assertion or claim has been made in writing challenging the validity of any of
the foregoing which would have a Viacom Material Adverse Effect. To the
knowledge of Viacom, the conduct of the business of Viacom and its subsidiaries
as currently conducted does not conflict in any way with any patent, patent
right, license, trademark, trademark right, trade name, trade name right,
service mark or copyright of any third party, except for such conflicts which
would not have a Viacom Material Adverse Effect.

   Section 4.14. Taxes. Except as would not have a Viacom Material Adverse
Effect, (a) each of Viacom and each of its subsidiaries has timely filed all
federal, state, local and foreign tax returns and reports (including
extensions) required to be filed by it and has paid and discharged all Taxes
shown as due thereon and has paid all of such other Taxes as are due, other
than such payments as are being contested in good faith by appropriate
proceedings, (b) neither the IRS nor any other taxing authority or agency,
domestic or foreign, is now asserting or, to the knowledge of Viacom after due
inquiry, threatening to assert against Viacom or any of its subsidiaries any
deficiency or claim for Taxes, (c) no waiver of any statute of limitations with
respect to, or any extension of a period for the assessment of, any Tax has
been granted by Viacom or any of its subsidiaries, (d) the accruals and
reserves for Taxes reflected in the Viacom balance sheet included in its Annual
Report on Form 10-K for fiscal year 1998 and the most recent quarterly
financial statements are adequate to cover all Taxes accruable through the date
thereof in accordance with United States generally accepted accounting
principles, (e) no election under Section 341(f) of the Code has been made by
Viacom or any of its subsidiaries, (f) Viacom and each of its subsidiaries has
withheld or collected and paid over to the appropriate governmental authorities
or is properly holding for such payment all Taxes required by law to be
withheld or collected, (g) there are no liens for Taxes upon the assets of
Viacom or any of its subsidiaries, other than liens for Taxes that are being
contested in good faith by appropriate proceedings and (h) Viacom has not
constituted a "distributing corporation" (within the meaning of Section
355(a)(1)(A) of the Code) in a distribution of stock qualifying for tax-free
treatment under Section 355 of the Code in the two years prior to the date of
this Agreement.

   Section 4.15. Tax Matters. None of Viacom or any of its affiliates has taken
or agreed to take any action that would prevent the Merger from constituting a
transaction qualifying under Section 368(a) of the Code. None of Viacom or any
of its affiliates or agents is aware of any agreement, plan or other
circumstance that would prevent the Merger from qualifying under Section 368(a)
of the Code, that could prevent them from providing representations required in
Sections 7.02(c) or 7.03(c), or that could prevent the opinions described in
such Sections from being given and to the knowledge of Viacom the Merger will
so qualify.

   Section 4.16. Year 2000 Compliance. (a) Viacom has adopted a plan that it
believes will cause Viacom Systems (as defined below) to be Viacom Year 2000
Compliant (as defined below) (such plan, as it may be amended, modified or
supplemented from time to time being, the "Viacom Year 2000 Plan") in all
material respects. Viacom has taken, and between the date of this Agreement and
the Effective Time will continue to take, all reasonable steps to implement the
Viacom Year 2000 Plan with respect to the Viacom Systems. Notwithstanding
anything in this Section 4.16 to the contrary, Viacom does not represent or
warrant that Viacom Systems (or any other operations, systems, equipment or
software of Viacom or its subsidiaries or any of their respective affiliates)
are or will be Viacom Year 2000 Compliant at or prior to the Effective Time,
regardless of whether the Viacom Year 2000 Plan has or has not been implemented
or complied with.

   (b) For purposes of this Section 4.16, (i) "Viacom Systems" shall mean all
computer, hardware, software, systems, and equipment (including embedded
microcontrollers in non-computer equipment) embedded within or required to
operate the current products of Viacom and its subsidiaries, and/or material to
or necessary for Viacom and its subsidiaries to carry on their respective
businesses as currently conducted; and (ii) "Viacom Year 2000 Compliant" means
that Viacom Systems will (A) manage, accept, process, store and output data

                                      A-20
<PAGE>

involving dates reasonably expected to be encountered in the foreseeable future
and (B) accurately process date data from, into and between the 20th and 21st
centuries and each date during the years 1999 and 2000.

   Section 4.17. Opinion of Financial Advisors. Viacom has received the written
opinion of Morgan Stanley Dean Witter & Co. (the "Viacom Financial Advisor") on
or prior to the date of this Agreement, to the effect that, as of the date of
such opinion, the Exchange Ratio is fair to the stockholders of Viacom, from a
financial point of view, and Viacom will deliver a copy of such opinion to CBS
promptly after the date of this Agreement.

   Section 4.18. Vote Required. The affirmative vote of the holders of a
majority of the outstanding Viacom Class A Common Stock is the only vote of the
holders of any class or series of capital stock of Viacom necessary to approve
the transactions contemplated by this Agreement.

   Section 4.19. Section 203 of Delaware Law. The Board of Directors of Viacom
has approved this Agreement and such Viacom approval is sufficient to render
inapplicable to this Agreement, the Parent Voting Agreements and the
transactions contemplated hereby and thereby the provisions of Section 203 of
Delaware Law.

   Section 4.20. Brokers. No broker, finder or investment banker (other than
the Viacom Financial Advisor) is entitled to any brokerage, finder's or other
fee or commission in connection with the Merger based upon arrangements made by
or on behalf of Viacom.

                                   ARTICLE V

                     Conduct of Business Pending the Merger

   Section 5.01. Conduct of Business by CBS Pending the Merger. CBS covenants
and agrees that, between the date of this Agreement and the Effective Time,
except (w) as contemplated by this Agreement or as set forth in Section 5.01 of
the CBS Disclosure Schedule, (x) as Viacom shall otherwise agree in advance in
writing, which agreement shall not be unreasonably withheld or delayed, (y) for
actions taken in connection with the consummation of the acquisitions of King
World, Outdoor Systems, Inc. and of the subsidiaries of Gaylord that own KTVT,
Dallas, Texas (the "Pending Transactions") on substantially the same terms that
have heretofore been agreed between such parties or on such other terms and
conditions which would not be reasonably likely to have an impact that is both
material and detrimental to CBS and its subsidiaries, taken as a whole, unless
Viacom shall have consented thereto, such consent not to be unreasonably
withheld or delayed, provided that CBS may not amend or otherwise modify the
terms of the CBS Series B Preferred Stock to be received by Gaylord pursuant to
the Gaylord Agreement, without the written consent of Viacom, and (z) for the
exercise of options, warrants and similar securities which would otherwise
expire prior to the Effective Time, or the exercise of any put rights, call
rights, rights of first refusal and other similar rights, in each case under
agreements in existence on the date of this Agreement and otherwise in
accordance with the terms of this Agreement, the business of CBS and its
subsidiaries shall be conducted only in, and CBS and its subsidiaries shall not
take any action except in, the ordinary course of business and in a manner
consistent with past practice; and CBS and its subsidiaries shall use their
reasonable best efforts to preserve substantially intact CBS's business
organization, to keep available the services of the current officers, employees
and consultants of CBS and its subsidiaries (provided that the foregoing
covenant to use reasonable best efforts shall not require CBS to offer
retention bonuses to such individuals) and to preserve the current
relationships of CBS and its subsidiaries with customers, distributors,
dealers, suppliers and other persons with which CBS and its subsidiaries have
significant business relations. By way of amplification and not limitation,
between the date of this Agreement and the Effective Time, CBS will not do, and
will not permit any of its subsidiaries to do, directly or indirectly, any of
the following except in compliance with the exceptions listed above:

     (a) amend or otherwise change the Articles of Incorporation or By-laws
  of CBS or any CBS subsidiary other than Infinity if such amendment or
  change would have a CBS Material Adverse Effect;

                                      A-21
<PAGE>

     (b) issue, sell, pledge, dispose of, grant, encumber, or authorize the
  issuance, sale, pledge, disposition, grant or encumbrance of, (i) any
  shares of its or its subsidiaries' capital stock, or any options, warrants,
  convertible securities or other rights of any kind to acquire any shares of
  its or its subsidiaries' capital stock or any other ownership interest
  (including any phantom interest), of CBS or any of its subsidiaries (except
  (A) for the issuance of Shares issuable pursuant to CBS Options or shares
  of Infinity common stock pursuant to Infinity stock options outstanding on
  the date hereof, (B) for the issuance of options, and other stock grants of
  CBS or Shares which (other than as permitted under any severance
  arrangement established by CBS in accordance with Section 6.16 hereof or
  with respect to 1,200,000 options to be issued to two senior executives of
  King World upon its acquisition by CBS) do not provide for accelerated
  vesting in connection with the Merger and the other transactions
  contemplated by this Agreement, (x) to purchase a maximum of 5,000,000
  Shares, (y) to purchase a maximum of 17,200,000 Shares as set forth in
  Section 5.01 of the CBS Disclosure Schedule and (z) to purchase a maximum
  of 12,500,000 shares of Infinity common stock as set forth in Section 5.01
  of the CBS Disclosure Schedule, in each case in the ordinary course of
  business consistent with past practice and allocated to persons who are
  officers, employees, directors, independent contractors and production
  company writers and talent of CBS or Infinity, as applicable, or any of
  their respective subsidiaries (including past practice of any such
  subsidiary before its acquisition by CBS) and (C) the issuance of shares of
  CBS and Infinity stock in connection with the Pending Transactions
  (including the issuance of shares of CBS Series B Preferred Stock and the
  issuance of shares of CBS Common Stock upon conversion of CBS Series B
  Preferred Stock in accordance with its terms and the terms and conditions
  of the Gaylord Agreement and other agreements and documents executed in
  connection therewith), or (ii) any assets material to CBS and its
  subsidiaries, taken as a whole, except for sales in the ordinary course of
  business and in a manner consistent with past practice;

     (c) declare, set aside, make or pay any dividend or other distribution,
  payable in cash, stock, property or otherwise, with respect to any of its
  or its subsidiaries' capital stock other than cash dividends payable by any
  wholly owned CBS subsidiary to another CBS subsidiary or CBS and other than
  dividends made or paid by Infinity, so long as the aggregate amount of such
  dividends paid by Infinity shall not exceed $500,000,000;

     (d) reclassify, combine, split, subdivide or redeem, purchase or
  otherwise acquire, directly or indirectly, any of its or its subsidiaries'
  capital stock;

     (e) (i) except in connection with the Pending Transactions and in
  connection with acquisitions which individually do not exceed $200,000,000
  and in the aggregate do not exceed $1,000,000,000 (A) acquire (including by
  merger, consolidation, or acquisition of stock or assets), or otherwise
  make any investment in, any corporation, partnership, limited liability
  company, other business organization or any division thereof, or any
  material amount of assets; or (B) incur any indebtedness for borrowed
  money, issue any debt securities, assume, guarantee or endorse, or
  otherwise as an accommodation become responsible for, the obligations of
  any person, agree to amend or otherwise modify in any manner any agreement
  or instrument pursuant to which CBS has incurred indebtedness, or make any
  loans or advances, except in the ordinary course of business and consistent
  with past practice, except the refinancing of existing indebtedness,
  borrowings under commercial paper programs in the ordinary course of
  business or borrowings under existing bank lines of credit in the ordinary
  course of business, (ii) enter into any material contract, agreement or
  transaction, other than (X) in the ordinary course of business, and (Y)
  which would not be reasonably likely to prevent or materially delay the
  consummation of the Merger, (iii) authorize any capital expenditures which
  are, in the aggregate, in excess of the amounts currently budgeted for the
  fiscal year 1999 (including the applicable 1999 capital expenditures of the
  companies subject to the Pending Transactions) and, with respect to fiscal
  year 2000, 10% in excess of such amount, in each case for CBS and its
  subsidiaries taken as a whole or (iv) enter into or amend any contract,
  agreement, commitment or arrangement which would require CBS to take any
  action prohibited by this subsection (e) and will, or will cause Infinity
  to, not amend in any material respect, or waive any material right or
  condition under or relating to the definitive agreements relating to the
  Pending Transactions, in

                                      A-22
<PAGE>

  each case except for any such amendment or waiver the impact of which would
  not be reasonably likely to be both material and detrimental to CBS and its
  subsidiaries, taken as a whole;

     (f) increase the compensation payable or to become payable to its
  executive officers or employees, except as set forth in Section 6.16 or as
  required by Law or by the terms of any collective bargaining agreement or
  other agreement currently in effect between CBS or any subsidiary of CBS
  and any executive officer or employee thereof and except for increases in
  the ordinary course of business in accordance with past practices, or grant
  any severance or termination pay to, or enter into any employment or
  severance agreement with, any director or executive officer of it or any of
  its subsidiaries, or establish, adopt, enter into or amend in any material
  respect or take action to accelerate any rights or benefits under any
  collective bargaining, bonus, profit sharing, thrift, compensation, stock
  option, restricted stock, pension, retirement, deferred compensation,
  employment, termination, severance or other plan, agreement, trust, fund,
  policy or arrangement for the benefit of any director, executive officer or
  employee, provided that this clause shall not prevent any CBS subsidiary
  from (i) entering into employment contracts with newly-hired or promoted
  executive officers, or from making severance payments, on terms
  substantially consistent with the contractual arrangements currently
  existing at such subsidiary or (ii) providing for the payment of severance
  to executive officers or employees on terms substantially consistent with
  the past practices of such subsidiary (including past practice preceding
  such subsidiaries' acquisition by CBS);

     (g) change in any material respect (except as required by the SEC or
  changes in United States generally accepted accounting principles which
  become effective after the date of this Agreement) any accounting policies,
  practices or procedures;

     (h) make any tax election that, individually or in the aggregate, would
  have a CBS Material Adverse Effect or settle or compromise any material Tax
  liability; or

     (i) enter into any contract, agreement, lease, license, permit,
  franchise or other instrument or obligation which if in existence and known
  to CBS prior to the date of this Agreement would have resulted in a breach
  of Section 3.05, except to the extent the conflict, violation, breach,
  default or occurrence of the type referred to therein giving rise to such
  breach would not have a CBS Material Adverse Effect;

provided that Infinity shall not be prohibited from taking any action under
this Section 5.01 which the Board of Directors of Infinity determines is
required to be taken in the exercise of the Board's fiduciary duties to the
stockholders of Infinity (other than CBS).

   Section 5.02. Conduct of Business by Viacom Pending the Merger. Viacom
covenants and agrees that, between the date of this Agreement and the Effective
Time, except (w) as contemplated by this Agreement or as set forth in Schedule
5.02 of the Viacom Disclosure Schedule, (x) as CBS shall otherwise agree in
advance in writing, which agreement shall not be unreasonably withheld or
delayed, (y) for the exercise of options, warrants and similar securities which
would otherwise expire prior to the Effective Time, or the exercise of any put
rights, call rights, rights of first refusal and other similar rights, in each
case under agreements in existence on the date of this Agreement and otherwise
in accordance with the terms of this Agreement and (z) an exchange offer of
Blockbuster shares owned by Viacom for shares of Viacom Class B Common Stock
owned by the stockholders of Viacom (the "Split-off") in accordance with the
procedures set forth in Section 5.02 of the Viacom Disclosure Schedule, the
business of Viacom and its subsidiaries shall be conducted only in, and Viacom
and its subsidiaries shall not take any action except in, the ordinary course
of business and in a manner consistent with past practice; and Viacom and its
subsidiaries shall use their reasonable best efforts to preserve substantially
intact Viacom's business organization, to keep available the services of the
current officers, employees and consultants of Viacom and its subsidiaries
(provided that the foregoing covenant to use reasonable best efforts shall not
require Viacom to offer retention bonuses to such individuals) and to preserve
the current relationships of Viacom and its subsidiaries with customers,
distributors, suppliers and other persons with which Viacom and its
subsidiaries have significant business relations. By way of amplification and
not limitation, between the date of this Agreement and the Effective Time,
Viacom will not do, and will not permit

                                      A-23
<PAGE>

any of its subsidiaries to do, directly or indirectly, any of the following
except in compliance with the exceptions listed above:

     (a) amend or otherwise change the Certificate of Incorporation or By-
  laws of Viacom or Blockbuster, or any other Viacom subsidiary if such
  amendment or change would have a Viacom Material Adverse Effect;

     (b) issue, sell, pledge, dispose of, grant, encumber, or authorize the
  issuance, sale, pledge, disposition, grant or encumbrance of, (i) any
  shares of its or its subsidiaries' capital stock, or any options, warrants,
  convertible securities or other rights of any kind to acquire any shares of
  its or its subsidiaries' capital stock or any other ownership interest
  (including any phantom interest), of Viacom or any of its subsidiaries
  (except (A) for the issuance of Shares issuable pursuant to Viacom Options
  outstanding on the date hereof and (B) for the issuance of options, which
  do not provide for accelerated vesting or other consequences in connection
  with the Merger and the other transactions contemplated by this Agreement,
  to purchase a maximum of 6,000,000 shares of Viacom Class B Common Stock in
  the ordinary course of business consistent with past practice and allocated
  to persons who are officers, employees, directors, independent contractors
  and production company writers and talent of Viacom or any of its
  subsidiaries on a basis substantially consistent with past practice), or
  (ii) any assets material to Viacom and its subsidiaries, taken as a whole,
  except for sales in the ordinary course of business and in a manner
  consistent with past practice;

     (c) declare, set aside, make or pay any dividend or other distribution,
  payable in cash, stock, property or otherwise, with respect to any of its
  or its subsidiaries' capital stock other than cash dividends payable by any
  wholly owned Viacom subsidiary to another Viacom subsidiary or Viacom,
  other than dividends made or paid by Blockbuster, so long as the aggregate
  amount of such dividends paid by Blockbuster shall not exceed $50,000,000;

     (d) reclassify, combine, split, subdivide or redeem, purchase or
  otherwise acquire, directly or indirectly, any of its or its subsidiaries'
  capital stock;

     (e) (i) except in connection with acquisitions which individually do not
  exceed $200,000,000 and in the aggregate do not exceed $1,000,000,000 (A)
  acquire (including by merger, consolidation, or acquisition of stock or
  assets), or otherwise make any investment in, any corporation, partnership,
  limited liability company, other business organization or any division
  thereof, or any material amount of assets; or (B) incur any indebtedness
  for borrowed money, issue any debt securities, assume, guarantee or
  endorse, or otherwise as an accommodation become responsible for, the
  obligations of any person, agree to amend or otherwise modify in any manner
  any agreement or instrument pursuant to which Viacom has incurred
  indebtedness, or make any loans or advances, except in the ordinary course
  of business and consistent with past practice, except the refinancing of
  existing indebtedness, borrowings under commercial paper programs in the
  ordinary course of business or borrowings under existing bank lines of
  credit in the ordinary course of business, (ii) enter into any contract,
  agreement or transaction, other than (X) in the ordinary course of
  business, consistent with past practice and (Y) which would not be
  reasonably likely to prevent or materially delay the consummation of the
  Merger, (iii) authorize any capital expenditures which are, in the
  aggregate, in excess of the amount currently budgeted therefor (and
  previously disclosed to CBS) for the fiscal year ending December 31, 1999,
  and, with respect to fiscal year December 31, 2000, 10% in excess of such
  amount, in each case for Viacom and its subsidiaries taken as a whole or
  (iv) enter into or amend any contract, agreement, commitment or arrangement
  which would require Viacom to take any action prohibited by this subsection
  (e);

     (f) increase the compensation payable or to become payable to its
  executive officers or employees, except as required by Law or by the terms
  of any collective bargaining agreement or other agreement currently in
  effect between Viacom or any subsidiary of Viacom and any executive officer
  or employee thereof and except for increases in the ordinary course of
  business in accordance with past practices, or grant any severance or
  termination pay to, or enter into any employment or severance agreement
  with, any director or executive officer of it or any of its subsidiaries,
  or establish, adopt, enter into or amend in any

                                      A-24
<PAGE>

  material respect or take action to accelerate any rights or benefits under
  any collective bargaining, bonus, profit sharing, thrift, compensation,
  stock option, restricted stock, pension, retirement, deferred compensation,
  employment, termination, severance or other plan, agreement, trust, fund,
  policy or arrangement for the benefit of any director, executive officer or
  employee, provided that this clause shall not prevent any Viacom subsidiary
  from (i) entering into employment contracts with newly-hired or promoted
  executive officers on terms substantially consistent with the contractual
  arrangements currently existing at such subsidiary or (ii) providing for
  the payment of severance to executive officers or employees on terms
  substantially consistent with the past practices of such subsidiary;

     (g) change in any material respect (except as required by the SEC or
  changes in United States generally accepted accounting principles which
  become effective after the date of this Agreement) any accounting policies,
  practices or procedures;

     (h) make any tax election that, individually or in the aggregate, would
  have a Viacom Material Adverse Effect or settle or compromise any material
  Tax liability; or

     (i) enter into any contract, agreement, lease, license, permit,
  franchise or other instrument or obligation which if in existence and known
  to Viacom prior to the date of this Agreement would have resulted in a
  breach of Section 4.05, except to the extent the conflict, violation
  breach, default or occurrence of the type referred to therein giving rise
  to such breach would not have a Viacom Material Adverse Effect;

provided, that Blockbuster shall not be prohibited from taking any action under
this Section 5.02 which the Board of Directors of Blockbuster determines is
required to be taken in the exercise of the Board's fiduciary duties to the
stockholders of Blockbuster (other than Viacom).

   Section 5.03. Other Actions. Except as required by Law, CBS and Viacom shall
not, and shall not permit any of their respective subsidiaries to, take any
action that would, or that is reasonably likely to, result in any of the
conditions to the Merger set forth in Article VII not being satisfied.

                                   ARTICLE VI

                             Additional Agreements

   Section 6.01. Registration Statement; Joint Proxy Statement. (a) As promptly
as practicable after the execution of this Agreement, (i) Viacom and CBS shall
cooperate in preparing and each shall cause to be filed with the SEC a joint
proxy statement (together with any amendments thereof or supplements thereto,
the "Proxy Statement") relating to the meetings of Viacom's and CBS's
stockholders to be held to consider approval and adoption of this Agreement and
the Viacom Proposal and (ii) Viacom shall prepare and file with the SEC a
registration statement on Form S-4 (together with all amendments thereto, the
"Registration Statement") in which the Proxy Statement shall be included as a
prospectus, in connection with the registration under the Securities Act of the
shares of Viacom Class B Common Stock (including such shares of Viacom Class B
Common Stock into which the Viacom Series C Preferred Stock is convertible) and
the shares of Viacom Series C Preferred Stock to be issued to the shareholders
of CBS pursuant to the Merger. Each of Viacom and CBS shall use its reasonable
best efforts to cause the Registration Statement to become effective as
promptly as practicable, and, prior to the effective date of the Registration
Statement, Viacom shall use reasonable best efforts to take all or any action
required under any applicable federal or state securities Laws in connection
with the issuance of shares of Viacom Class B Common Stock (including such
shares of Viacom Class B Common Stock into which the Viacom Series C Preferred
Stock is convertible) and the shares of Viacom Series C Preferred Stock
pursuant to the Merger. Each of Viacom and CBS shall furnish all information
concerning it as may reasonably be requested by the other party in connection
with such actions and the preparation of the Registration Statement and Proxy
Statement. As promptly as practicable after the Registration Statement shall
have become effective, each of Viacom and CBS shall mail the Proxy Statement to
its stockholders and to its shareholders, respectively. Each of Viacom and CBS
shall also promptly file, use

                                      A-25
<PAGE>

reasonable best efforts to cause to become effective as promptly as practicable
and, if required, mail to its stockholders and shareholders, respectively, any
amendment to the Registration Statement or Proxy Statement which may become
necessary after the date the Registration Statement is declared effective.

   (b) (i) The Proxy Statement shall include the recommendation of the Board of
Directors of Viacom to the stockholders of Viacom in favor of approval of the
Viacom Proposal; provided, however, that the Board of Directors of Viacom may
take or disclose to its stockholders a position contemplated by Rule 14e-2(a)
promulgated under the Exchange Act or make any disclosure required under
applicable Law and may, prior to the date of its Stockholders' Meeting,
withdraw, modify, or change any such recommendation to the extent that the
Board of Directors of Viacom determines in good faith that such withdrawal,
modification or change is required in order to comply with its fiduciary duties
to Viacom's stockholders under applicable Law after receiving advice from
independent legal counsel (who may be Viacom's regularly engaged outside legal
counsel).

   (ii) The Proxy Statement shall include the recommendation of the Board of
Directors of CBS to the shareholders of CBS in favor of adoption of this
Agreement; provided, however, that the Board of Directors of CBS may take or
disclose to its shareholders a position contemplated by Rule 14e-2(a)
promulgated under the Exchange Act or make any disclosure required under
applicable Law and may, prior to the date of its Stockholders' Meeting,
withdraw, modify, or change any such recommendation to the extent that the
Board of Directors of CBS determines in good faith that such withdrawal,
modification or change is required in order to comply with its fiduciary duties
under applicable Law after receiving advice from independent legal counsel (who
may be CBS's regularly engaged outside legal counsel).

   (c) Notwithstanding any withdrawal, modification or change in any approval
or recommendation of the Board of Directors of CBS or Viacom, as the case may
be, each of CBS and Viacom agree to hold their respective Stockholders Meeting
in accordance with the time period specified in Section 6.02.

   (d) No amendment or supplement to the Proxy Statement or the Registration
Statement will be made by Viacom or CBS without the approval of the other
party, which shall not be unreasonably withheld or delayed. Each of Viacom and
CBS will advise the other, promptly after it receives notice thereof, of the
time when the Registration Statement has become effective or any supplement or
amendment has been filed, the issuance of any stop order, the suspension of the
qualification of the Viacom Class B Common Stock or the Viacom Series C
Preferred Stock issuable in connection with the Merger for offering or sale in
any jurisdiction, or any request by the SEC for amendment of the Proxy
Statement or the Registration Statement or comments thereon and responses
thereto or requests by the SEC for additional information.

   (e) The information supplied by CBS for inclusion in the Registration
Statement and the Proxy Statement (including by incorporation by reference)
shall not, at (i) the time the Registration Statement is declared effective,
(ii) the time the Proxy Statement (or any amendment thereof or supplement
thereto) is first mailed to the stockholders and shareholders of Viacom and
CBS, respectively, (iii) the time of each of the Stockholders' Meetings (as
hereinafter defined), and (iv) the Effective Time, contain any untrue statement
of a material fact or omit to state any material fact required to be stated
therein or necessary in order to make the statements therein not misleading. If
at any time prior to the Effective Time any event or circumstance relating to
CBS or any of its subsidiaries, or their respective officers or directors,
should be discovered by CBS which, pursuant to the Securities Act or Exchange
Act, should be set forth in an amendment or a supplement to the Registration
Statement or Proxy Statement, CBS shall promptly inform Viacom. All documents
that CBS is responsible for filing with the SEC in connection with the Merger
will comply as to form in all material respects with the applicable
requirements of the Securities Act and the Exchange Act.

   (f) The information supplied by Viacom for inclusion in the Registration
Statement and the Proxy Statement (including by incorporation by reference)
shall not, at (i) the time the Registration Statement is declared effective,
(ii) the time the Proxy Statement (or any amendment thereof or supplement
thereto) is first mailed to the stockholders of Viacom and the shareholders of
CBS, (iii) the time of each of the Stockholders'

                                      A-26
<PAGE>

Meetings, and (iv) the Effective Time, contain any untrue statement of a
material fact or omit to state any material fact required to be stated therein
or necessary in order to make the statements therein not misleading. If at any
time prior to the Effective Time any event or circumstance relating to Viacom
or any of its subsidiaries, or their respective officers or directors, should
be discovered by Viacom which, pursuant to the Securities Act or Exchange Act,
should be set forth in an amendment or a supplement to the Registration
Statement or Proxy Statement, Viacom shall promptly inform CBS. All documents
that Viacom is responsible for filing with the SEC in connection with the
Merger will comply as to form in all material respects with the applicable
requirements of the Securities Act and the Exchange Act.

   (g) Viacom and CBS each hereby (i) consents to the use of its name and, on
behalf of its subsidiaries and affiliates, the names of such subsidiaries and
affiliates and to the inclusion of financial statements and business
information relating to such party and its subsidiaries and affiliates (in each
case, to the extent required by applicable securities laws) in any registration
statement or proxy statement prepared by Viacom, CBS or any person or entity
with which Viacom or CBS, consistent with their obligations under this
Agreement, has entered into, or may prior to the Effective Time enter into, a
definitive acquisition agreement, (ii) agrees to use its reasonable best
efforts to obtain the written consent of any person or entity retained by it
which may be required to be named (as an expert or otherwise) in such
registration statement or proxy statement; provided that such party shall not
be required to make any material payment to such person or entity in connection
with such party's efforts to obtain any such consent, and (iii) agrees to
cooperate, and agrees to use its reasonable best efforts to cause its
subsidiaries and affiliates to cooperate, with any legal counsel, investment
banker, accountant or other agent or representative retained by any of the
parties specified in clause (i) in connection with the preparation of any and
all information required, as determined after consultation with each party's
counsel, to be disclosed by applicable securities laws in any such registration
statement or proxy statement.

   (h) CBS and Viacom will use their best efforts to complete the pro forma
financial statements with respect to the Merger, in a form suitable for filing
in connection with a registration statement under the Securities Act, as soon
as possible, and in any event within 10 days after the execution of this
Agreement.

   (i) CBS shall consult with Viacom, and provide Viacom reasonable opportunity
to review and comment on, and CBS and Viacom will use their respective
reasonable best efforts to agree on, CBS's and Infinity's accounting for the
Pending Transactions.

   Section 6.02. Stockholders' Meetings. Each of Viacom and CBS shall call and
hold a meeting of its stockholders or shareholders, respectively (collectively,
the "Stockholders' Meetings"), as promptly as practicable for the purpose of
voting upon, in the case of Viacom, the Viacom Proposal, and, in the case of
CBS, the adoption of this Agreement, and CBS and Viacom shall hold the
Stockholders' Meeting as soon as practicable after the date on which the
Registration Statement becomes effective and will use reasonable best efforts
to hold the Stockholders' Meetings on the same day. Each of Viacom and CBS
shall use its reasonable best efforts to solicit from its stockholders proxies
in favor of the adoption of this Agreement, in the case of CBS, and the Viacom
Proposal, in the case of Viacom, and shall take all other action necessary or
advisable to secure the vote of its stockholders and shareholders,
respectively, required by the NYSE, Pennsylvania Law or Delaware Law, as
applicable, to obtain such approvals; provided, however, that Viacom or CBS, as
applicable, shall not be obligated to solicit proxies in favor of the adoption
of this Agreement, in the case of CBS, or in favor of the Viacom Proposal, in
the case of Viacom, at its Stockholders' Meeting to the extent that the Board
of Directors of Viacom or CBS, as applicable, determines in good faith that
such failure to solicit proxies is required in order to comply with its
fiduciary duties under applicable Law after receiving advice to such effect
from independent legal counsel (who may be such party's regularly engaged
outside legal counsel); provided further, however, that notwithstanding
anything to the contrary in the foregoing, each of CBS and Viacom shall hold
its Stockholders Meeting in accordance with the time periods specified in the
first sentence of this Section 6.02.

   Section 6.03. Appropriate Action; Consents; Filings. (a) Each of the parties
hereto shall (i) make promptly its respective filings, and thereafter make any
other required submissions under the HSR Act with

                                      A-27
<PAGE>

respect to the transactions contemplated herein and (ii) make promptly filings
with or applications to the FCC with respect to the transactions contemplated
herein. The parties hereto will use their respective best efforts, and will
take all actions necessary, to consummate and make effective the transactions
contemplated herein and to cause the conditions to the Merger set forth in
Article VII to be satisfied, (including using best efforts, and taking all
actions necessary, to obtain all licenses, permits, consents, approvals,
authorizations, waivers, qualifications and orders of Governmental Authorities
as are necessary for the consummation of the transactions contemplated herein),
and will do so in a manner designed to obtain such regulatory clearance and the
satisfaction of such conditions as expeditiously as possible.

   (b) CBS and Viacom each agree to take promptly any and all steps necessary
to avoid or eliminate each and every impediment and obtain all consents or
waivers under any antitrust, competition or communications or broadcast Law
that may be asserted by any U.S. federal, state and local and non-United States
antitrust or competition authority, or by the FCC or similar authority, so as
to enable the parties to close the transactions contemplated by this Agreement
as expeditiously as possible, including committing to or effecting, by consent
decree, hold separate orders, trust, or otherwise, the sale or disposition of
such of its assets or businesses as are required to be divested in order to
obtain the consent of the FCC to or avoid the entry of, or to effect the
dissolution of, any decree, order, judgment, injunction, temporary restraining
order or other order in any suit or proceeding, that would otherwise have the
effect of preventing or materially delaying the consummation of the Merger and
the other transactions contemplated by this Agreement. In addition, each of CBS
and Viacom agree to take promptly any and all steps necessary to obtain any
consent or to vacate or lift any order, writ, judgment, injunction, decree,
stipulation, determination or award entered by or with any Governmental
Authority (each, an "Order") relating to antitrust or communications or
broadcast matters that would have the effect of making any of the transactions
contemplated by this Agreement illegal or otherwise prohibiting or materially
delaying their consummation. The parties will expeditiously agree on a complete
plan for compliance with applicable FCC ownership requirements for inclusion in
the FCC filings and will expeditiously make such filings (including such agreed
plan) with the FCC following the date of this Agreement.

   (c) Each of Viacom and CBS shall give (or shall cause its respective
subsidiaries to give) any notices to third parties, and Viacom and CBS shall
use, and cause each of its subsidiaries to use, its reasonable best efforts to
obtain any third party consents, necessary, proper or advisable to consummate
the Merger. Each of the parties hereto will furnish to the other such necessary
information and reasonable assistance as the other may request in connection
with the preparation of any required governmental filings or submissions and
will cooperate in responding to any inquiry from a Governmental Authority,
including immediately informing the other party of such inquiry, consulting in
advance before making any presentations or submissions to a Governmental
Authority, and supplying each other with copies of all material correspondence,
filings or communications between either party and any Governmental Authority
with respect to this Agreement.

   Section 6.04. Access to Information; Confidentiality. (a) From the date
hereof to the Effective Time, to the extent permitted by applicable Law and
contracts, Viacom will provide to CBS (and its officers, directors, employees,
accountants, consultants, legal counsel, agents and other representatives,
collectively, "Representatives") access to all information and documents which
CBS may reasonably request regarding the business, assets, liabilities,
employees and other aspects of Viacom.

   (b) From the date hereof to the Effective Time, to the extent permitted by
applicable Law and contracts, CBS will provide to Viacom and its
Representatives access to all information and documents which Viacom may
reasonably request regarding the business, assets, liabilities, employees and
other aspects of CBS.

   (c) The parties shall comply with, and shall cause their respective
Representatives to comply with all of their respective obligations under the
Confidentiality Agreement dated August 27, 1999 (the "Confidentiality
Agreement") between CBS and Viacom.

   (d) No investigation pursuant to this Section 6.04 shall affect any
representation or warranty in this Agreement of any party hereto or any
condition to the obligations of the parties hereto.

                                      A-28
<PAGE>

   Section 6.05. No Solicitation of Competing Transactions. (a) CBS shall not,
directly or indirectly, through any officer, director, agent or otherwise,
initiate, solicit or knowingly encourage (including by way of furnishing non-
public information), or take any other action knowingly to facilitate, any
inquiries or the making of any proposal that constitutes, or may reasonably be
expected to lead to, any Competing Transaction (as defined below), or enter
into or maintain or continue discussions or negotiate with any person or entity
in furtherance of such inquiries or to obtain a Competing Transaction, or agree
to or endorse any Competing Transaction, or authorize any of the officers,
directors or employees of CBS or any investment banker, financial advisor,
attorney, accountant or other agent or representative of CBS to take any such
action, and CBS shall notify Viacom as promptly as practicable of all of the
relevant material details relating to all inquiries and proposals which CBS or
any such officer, director, employee, investment banker, financial advisor,
attorney, accountant or other agent or representative may receive relating to
any of such matters, provided, however, that prior to the adoption of this
Agreement by the shareholders of CBS, nothing contained in this Section 6.05
shall prohibit the Board of Directors of CBS from (i) furnishing information
to, or entering into and engaging in discussions or negotiations with, any
person that makes a bona fide unsolicited written proposal that the Board of
Directors of CBS determines in good faith, after consultation with CBS's
financial advisors and independent legal counsel, can be reasonably expected to
result in a CBS Superior Proposal; provided that prior to furnishing such
information to, or entering into discussions or negotiations with, such person,
CBS (1) provides notice to Viacom to the effect that it is furnishing
information to, or entering into discussions or negotiations with, such person
and provides in any such notice to Viacom in reasonable detail the identity of
the person making such proposal and the material terms and conditions of such
proposal, (2) provides Viacom with all information regarding CBS provided or to
be provided to such person which Viacom has not previously been provided, and
provided further that CBS shall keep Viacom informed, on a prompt basis, of the
status and material terms of any such proposal and the status of any such
discussions and negotiations and (3) receives from such person or entity an
executed confidentiality agreement containing customary terms (which need not
contain "standstill" or similar provisions), (ii) complying with Rule 14e-2
promulgated under the Exchange Act with regard to a tender or exchange offer or
making any disclosure required under applicable Law or (iii) failing to make or
withdrawing or modifying its recommendation referred to in Section 6.01
following the making of a CBS Superior Proposal if, solely in the case of this
clause (iii), the Board of Directors of CBS, after consultation with and based
upon the advice of independent legal counsel, determines in good faith that
such action is necessary for the Board of Directors of CBS to comply with its
fiduciary duties under applicable law.

   (b) For purposes of this Agreement, "Competing Transaction" shall mean any
of the following involving CBS: (i) any merger, consolidation, share exchange,
business combination, issuance or purchase of securities or other similar
transaction other than transactions specifically permitted pursuant to Section
5.01 of this Agreement; (ii) any sale, lease, exchange, mortgage, pledge,
transfer or other disposition of the assets of CBS in a single transaction or
series of related transactions; (iii) any tender offer or exchange offer for
CBS securities or the filing of a registration statement under the Securities
Act in connection with any such exchange offer; in the case of clauses (i),
(ii) or (iii) above, which transaction would result in a third party (or its
shareholders) acquiring more than 35% of the voting power of the Shares then
outstanding or more than 35% of the assets of CBS and its subsidiaries, taken
as a whole; or (iv) any public announcement of an agreement, proposal, plan or
intention to do any of the foregoing, either during the effectiveness of this
Agreement or at any time thereafter.

   (c) For purposes of this Agreement, a "CBS Superior Proposal" means any
proposal made by a third party which would result in such party (or in the case
of a parent-to-parent merger, its stockholders) acquiring, directly or
indirectly, including pursuant to a tender offer, exchange offer, merger,
consolidation, share exchange, business combination, share purchase, asset
purchase, recapitalization, liquidation, dissolution, joint venture or similar
transaction, more than 50% of the voting power of the Shares then outstanding
or all or substantially all the assets of CBS and its subsidiaries, taken as a
whole, for consideration which the Board of Directors of CBS determines in its
good faith judgment to be more favorable to CBS's shareholders than the Merger.

                                      A-29
<PAGE>

   Section 6.06. Directors' and Officers' Indemnification and
Insurance. (a) The Certificate of Incorporation and By-Laws of the Surviving
Corporation shall contain the provisions with respect to indemnification set
forth in the Certificate of Incorporation and By-laws of Viacom on the date of
this Agreement, which provisions shall not be amended, repealed or otherwise
modified after the Effective Time in any manner that would adversely affect the
rights thereunder of individuals who at any time prior to the Effective Time
were directors or officers of CBS in respect of actions or omissions occurring
at or prior to the Effective Time (including, without limitation, the
transactions contemplated by this Agreement), unless such modification is
required by law.

   (b) The Surviving Corporation shall maintain in effect for six years from
the Effective Time directors' and officers' liability insurance covering those
persons who are currently covered by CBS's directors' and officers' liability
insurance policy on terms comparable to such existing insurance coverage;
provided, however, that in no event shall the Surviving Corporation be required
to expend pursuant to this Section 6.06 more than an amount per year equal to
300% of current annual premiums paid by CBS for such insurance; and provided
further that if the annual premiums exceed such amount, Viacom shall be
obligated to obtain a policy with the greatest coverage available for an annual
cost not exceeding such amount.

   (c) This Section 6.06 shall survive the consummation of the Merger, is
intended to benefit each indemnified party, shall be binding, jointly and
severally, on all successors and assigns of the Surviving Corporation, and
shall be enforceable by the indemnified parties and their successors.

   Section 6.07. Notification of Certain Matters.  CBS shall give prompt notice
to Viacom, and Viacom shall give prompt notice to CBS, of (i) the occurrence,
or nonoccurrence, of any event the occurrence, or nonoccurrence, of which would
be likely to cause (x) any representation or warranty contained in this
Agreement to be untrue or inaccurate or (y) any covenant, condition or
agreement contained in this Agreement not to be complied with or satisfied and
(ii) any failure of CBS or Viacom, as the case may be, to comply with or
satisfy any covenant, condition or agreement to be complied with or satisfied
by it hereunder; provided, however, that the delivery of any notice pursuant to
this Section 6.07 shall not limit or otherwise affect the remedies available
hereunder to the party receiving such notice.

   Section 6.08. Tax Treatment. (a) The Agreement is intended to constitute a
"plan of reorganization" within the meaning of Section 1.368-2(g) of the income
tax regulations promulgated under the Code.

   (b) Between the date of this Agreement and the Effective Time, neither CBS
nor Viacom nor their affiliates shall directly or indirectly take any action
that could prevent the Merger from qualifying as a reorganization under Section
368(a) of the Code, that could prevent each of them from providing
representations required from them in Sections 7.02(c) or 7.03(c), or that
could prevent the opinions described in such Sections from being provided. Each
of them shall use all reasonable efforts to cause the opinions described in
such Sections to be provided, and to cause similar opinions to be provided at
the date of filing of the Registration Statement.

   (c) Neither CBS nor Viacom shall (without the consent of the other) take any
action, except as specifically contemplated by this Agreement, that could
adversely affect the intended tax treatment of the Pending Transactions.

   Section 6.09. Stock Exchange Listing.  Viacom shall as promptly as
reasonably practicable prepare and submit to NYSE a listing application
covering the shares of Viacom Class B Common Stock to be issued in the Merger,
the shares of Viacom Class B Common Stock underlying the CBS Options
outstanding immediately prior to the Effective Time and the shares of Viacom
Class B Common Stock issuable upon conversion of the Viacom Series C Preferred
Stock and shall use its best efforts to cause such shares to be approved for
listing on the NYSE prior to the Effective Time.

   Section 6.10. Public Announcements. Viacom and CBS shall consult with each
other before issuing any press release or otherwise making any public
statements with respect to this Agreement and shall not issue

                                      A-30
<PAGE>

any such press release or make any such public statement without the prior
consent of the other (which consent shall not be unreasonably withheld or
delayed), except as may be required by Law or any listing agreement with the
NYSE to which Viacom or CBS is a party. The parties have agreed on the text of
a joint press release by which Viacom and CBS will announce the execution of
this Agreement.

   Section 6.11. Viacom's Directors. The Board of Directors of Viacom shall
take all such action as may be necessary to cause the number of directors on
the Board of Directors of Viacom to be increased to eighteen as of the
Effective Time and to cause to be appointed to the Board of Directors of Viacom
as of the Effective Time eight designees of CBS, one of whom shall be Mel
Karmazin (unless Mel Karmazin shall no longer be available to serve in such
capacity) and the other seven of whom shall consist of CBS directors designated
in writing by CBS to Viacom prior to the Effective Time as set forth in Exhibit
A-1 hereto.

   Section 6.12. Rights Agreement. The Board of Directors of CBS shall take
such action as is necessary to render the Rights inapplicable to the Merger and
the other transactions contemplated by this Agreement.

   Section 6.13. Assumption of Debt and Leases. (a) With respect to debt issued
by CBS under indentures qualified under the Trust Indenture Act of 1939, and
any other debt of CBS the terms of which require Viacom to assume such debt in
order to avoid default thereunder (collectively, the "CBS Indentures"), Viacom
shall execute and deliver to the trustees or other representatives in
accordance with the terms of the respective CBS Indentures, Supplemental
Indentures, in form satisfactory to the respective trustees or other
representatives, expressly assuming the obligations of CBS with respect to the
due and punctual payment of the principal of (and premium, if any) and
interest, if any, on all debt securities issued by CBS under the respective
Indentures and the due and punctual performance of all the terms, covenants and
conditions of the respective CBS Indentures to be kept or performed by CBS and
shall deliver such Supplemental Indentures to the respective trustees or other
representatives under the CBS Indentures.

   (b) Viacom shall, promptly upon the reasonable request of CBS, provide CBS
with a letter which states that Viacom agrees that, as the Surviving
Corporation in the Merger, as of and following the Effective Time, it will
succeed to, honor, and satisfy all obligations and liabilities of CBS.

   Section 6.14. Affiliates of CBS. CBS represents and warrants to Viacom that
prior to the date of the CBS Stockholders' Meeting CBS will deliver to Viacom a
letter identifying all persons who may be deemed affiliates of CBS under Rule
145 of the Securities Act, including, without limitation, all directors and
executive officers of CBS, and CBS represents and warrants to Viacom that CBS
has advised the persons identified in such letter of the resale restrictions
imposed by applicable securities laws. CBS shall use its reasonable best
efforts to obtain from each person identified in such letter a written
agreement, substantially in the form of Exhibit 6.14. CBS shall use its
reasonable best efforts to obtain as soon as practicable from any person who
may be deemed to have become an affiliate of CBS after CBS's delivery of the
letter referred to above and prior to the Effective Time, a written agreement
substantially in the form of Exhibit 6.14.

   Section 6.15. Prior Service. With respect to any medical and dental benefits
provided to Continuing Employees as of or following the Effective Time under
Viacom's benefit plans, Viacom agrees that it will waive waiting periods and
pre-existing condition requirements under such plans (to the extent waived
under CBS's plans), and will give Continuing Employees credit for any co-
payments and deductibles actually paid by such employees under CBS's medical
and dental plans during the calendar year in which the Effective Time occurs.
In addition, service with CBS shall be recognized for all purposes under
Viacom's compensation and benefit plans, programs, policies and arrangements,
except where crediting such service would result in a duplication of benefits.
Without limiting the generality of the foregoing, Viacom shall honor all
vacation, personal and sick days accrued by Continuing Employees under CBS's
plans, policies, programs and arrangements immediately prior to the Effective
Time.

   Section 6.16. Employee Matters. (a) Viacom may establish retention and
severance arrangements for its officers or employees consistent with the terms
and conditions set forth in Section 6.16 of the Viacom Disclosure Schedule (the
"Viacom Employee Arrangements").

                                      A-31
<PAGE>

   (b) CBS may establish retention and severance and similar compensation
arrangements for its officers or employees; provided that the aggregate amount
expended pursuant to such arrangements does not materially exceed the estimated
value of the Viacom Employee Arrangements.

   (c) Each of CBS and Viacom shall consult with the other on the design and
implementation of the retention arrangements and the allocations of the
payments thereunder.

   Section 6.17. Gaylord. CBS shall, if permitted under the terms of the
Gaylord Proxy, exercise its rights under the Gaylord Proxy to vote the shares
of CBS Series B Preferred Stock held by Gaylord in favor of adoption of this
Agreement at the CBS Stockholders' Meeting, or any adjournment or postponement
thereof, and shall not waive or transfer to any person its rights under the
Gaylord Proxy.

   Section 6.18. Gaylord Tax Matters. CBS covenants and agrees that, between
October 8, 1999 and the Effective Time, CBS shall not, without Viacom's
consent, take any action or permit any action to be taken that would cause
Viacom to be in violation of any provision of the First Amendment to the
Amended and Restated Tax Matters Agreement (as referred to in the Gaylord
Agreement), at the time such amendment is executed in the form attached as
Annex A to the Amended and Restated Tax Matters Agreement.

                                  ARTICLE VII

                            Conditions to the Merger

   Section 7.01. Conditions to the Obligations of Each Party. The obligations
of CBS and Viacom to consummate the Merger are subject to the satisfaction or
waiver of the following conditions:

     (a) (i) this Agreement shall have been adopted by the affirmative vote
  of a majority of the votes cast by all shareholders entitled to vote at the
  CBS Stockholders' Meeting in accordance with Pennsylvania Law and CBS's
  Articles of Incorporation and (ii) the Viacom Proposal shall have been
  approved by the affirmative vote of the holders of a majority of the Viacom
  Class A Common Stock;

     (b) any applicable waiting period under the HSR Act relating to the
  Merger shall have expired or been terminated;

     (c) no Governmental Authority or court of competent jurisdiction shall
  have enacted, issued, promulgated, enforced or entered any Law, rule,
  regulation, executive order or Order which is then in effect and has the
  effect of making the Merger illegal or otherwise prohibiting consummation
  of the Merger;

     (d) the Registration Statement shall have been declared effective, and
  no stop order suspending the effectiveness of the Registration Statement
  shall be in effect and no proceedings for such purpose shall be pending
  before or threatened by the SEC;

     (e) (i) all authorizations, consents, waivers, orders or approvals for
  the Merger required to be obtained and all conditions precedent to such
  authorizations, consents, waivers, orders or approvals shall have been
  satisfied, and all filings, notices or declarations required to be made, by
  Viacom and CBS prior to the consummation of the Merger and the transactions
  contemplated hereunder, shall have been obtained from, and made with, the
  FCC and competition and antitrust Governmental Authorities in Canada and
  either the European Union or the United Kingdom, as applicable, and (ii)
  all other authorizations, consents, waivers, orders or approvals for the
  Merger required to be obtained, and all other filings, notices or
  declarations required to be made, by Viacom and CBS prior to the
  consummation of the Merger and the transactions contemplated hereunder,
  shall have been obtained from, and made with, all required Governmental
  Entities, except for such authorizations, consents, waivers, orders,
  approvals, filings, notices or declarations the failure to obtain or make
  which would not have a material adverse effect, at or after the Effective
  Time, on the business, results of operations or financial condition of CBS
  and its subsidiaries and Viacom and its subsidiaries, collectively taken as
  a whole; and

                                      A-32
<PAGE>

     (f) the shares of Viacom Class B Common Stock issuable to CBS's
  shareholders in the Merger, to holders of CBS Options outstanding
  immediately prior to the Effective Time and upon conversion of the Viacom
  Series C Preferred Stock shall have been authorized for listing on the
  NYSE, subject to official notice of issuance.

   Section 7.02. Conditions to the Obligations of Viacom. The obligations of
Viacom to consummate the Merger are subject to the satisfaction or waiver of
the following further conditions:

     (a) each of the representations and warranties of CBS contained in this
  Agreement shall be true and correct as of the Effective Time as though made
  on and as of the Effective Time (except to the extent expressly made as of
  an earlier date, in which case as of such date), except where the failure
  to be so true and correct would not have, individually or in the aggregate,
  a CBS Material Adverse Effect, and Viacom shall have received a certificate
  of an officer of CBS to such effect;

     (b) CBS shall have performed or complied in all material respects with
  all material agreements and covenants required by this Agreement to be
  performed or complied with by it on or prior to the Effective Time, and
  Viacom shall have received a certificate of an officer of CBS to that
  effect; and

     (c) Viacom shall have received the opinion of Paul, Weiss, Rifkind,
  Wharton & Garrison, in form and substance reasonably satisfactory to
  Viacom, to the effect that the Merger will be treated for federal income
  tax purposes as a reorganization qualifying under the provisions of Section
  368(a) of the Code, and Viacom and CBS will each be a party to the
  reorganization within the meaning of Section 368(b) of the Code. In
  rendering such opinion, counsel may require and rely upon representations
  contained in certificates of officers of CBS and Viacom.

   Section 7.03. Conditions to the Obligations of CBS. The obligations of CBS
to consummate the Merger are subject to the satisfaction or waiver of the
following further conditions:

     (a) each of the representations and warranties of Viacom contained in
  this Agreement shall be true and correct as of the Effective Time as though
  made on and as of the Effective Time (except to the extent expressly made
  as of an earlier date, in which case as of such date), except where failure
  to be so true and correct would not have, individually or in the aggregate,
  a Viacom Material Adverse Effect, and CBS shall have received a certificate
  of an officer of Viacom to such effect;

     (b) Viacom shall have performed or complied in all material respects
  with all material agreements and covenants required by this Agreement to be
  performed or complied with by it on or prior to the Effective Time, and CBS
  shall have received a certificate of an officer of Viacom to that effect;
  and

     (c) CBS shall have received the opinion of Cravath, Swaine & Moore, in
  form and substance reasonably satisfactory to CBS, to the effect that the
  Merger will be treated for federal income tax purposes as a reorganization
  qualifying under the provisions of Section 368(a) of the Code, and Viacom
  and CBS will each be a party to such reorganization within the meaning of
  Section 368(b) of the Code. In rendering such opinion, counsel may require
  and rely upon representations contained in certificates of officers of
  Viacom and CBS.

                                  ARTICLE VIII

                       Termination, Amendment and Waiver

   Section 8.01. Termination. This Agreement may be terminated and the Merger
may be abandoned at any time prior to the Effective Time, notwithstanding any
requisite approval and adoption of this Agreement, as follows:

     (a) by mutual written consent duly authorized by the Boards of Directors
  of each of Viacom and CBS;

                                      A-33
<PAGE>

     (b) by either Viacom or CBS, if the Effective Time shall not have
  occurred on or before August 31, 2000; provided, however, that the right to
  terminate this Agreement under this Section 8.01(b) shall not be available
  to any party whose failure to fulfill any obligation under this Agreement
  has been the cause of, or resulted in, the failure of the Effective Time to
  occur by such time;

     (c) by CBS upon delivery to Viacom of written notice that a Competing
  Proposal constitutes a CBS Superior Proposal; provided, however, that such
  termination pursuant to this subsection (c) shall not be effective until
  two business days have elapsed following delivery to Viacom of such written
  notice (which written notice will inform Viacom of the material terms and
  conditions of the CBS Superior Proposal); provided further, however, that
  such termination under this subsection (c) shall not be effective until CBS
  has made payment to Viacom of the amounts required to be paid pursuant to
  Section 8.05;

     (d) by either CBS or Viacom, if this Agreement shall fail to receive the
  requisite vote for adoption at the CBS Stockholders' Meeting;

     (e) by CBS, upon a breach of any representation, warranty, covenant or
  agreement on the part of Viacom set forth in this Agreement, or if any
  representation or warranty of Viacom shall have become untrue, in either
  case such that the conditions set forth in Sections 7.03(a) or (b) are not
  capable of being satisfied on or before August 31, 2000 (a "Terminating
  Viacom Breach");

     (f) by Viacom, upon breach of any representation, warranty, covenant or
  agreement on the part of CBS set forth in this Agreement, or if any
  representation or warranty of CBS shall have become untrue, in either case
  such that the conditions set forth in Sections 7.02(a) or (b) are not
  capable of being satisfied on or before August 31, 2000 ("Terminating CBS
  Breach"); or

     (g) by either Viacom or CBS, if any Governmental Authority shall have
  issued an Order or taken any other action permanently restraining,
  enjoining or otherwise prohibiting the transactions contemplated by this
  Agreement, and such Order or other action shall have become final and
  nonappealable.

   Section 8.02. Effect of Termination. Subject to Section 8.05 hereof, in the
event of termination of this Agreement pursuant to Section 8.01, this Agreement
shall forthwith become void, there shall be no liability under this Agreement
on the part of Viacom or CBS or any of their respective officers or directors
and all rights and obligations of each party hereto shall cease; provided,
however, that nothing herein shall relieve any party from liability for the
willful breach of any of its representations, warranties, covenants or
agreements set forth in this Agreement.

   Section 8.03. Amendment. This Agreement may be amended by the parties hereto
by action taken by or on behalf of their respective Boards of Directors at any
time prior to the Effective Time; provided, however, that, after the approval
and adoption of this Agreement by either the stockholders of Viacom or
shareholders of CBS, there shall not be any amendment that by Law requires
further approval by the stockholders of Viacom or shareholders of CBS without
the further approval of such stockholders or such shareholders. This Agreement
may not be amended except by an instrument in writing signed by the parties
hereto.

   Section 8.04. Waiver. At any time prior to the Effective Time, any party
hereto may (a) extend the time for the performance of any obligation or other
act of any other party hereto, (b) waive any inaccuracy in the representations
and warranties contained herein or in any document delivered pursuant hereto
and (c) subject to the proviso of Section 8.03, waive compliance with any
agreement or condition contained herein. Any such extension or waiver shall be
valid if set forth in an instrument in writing signed by the party or parties
to be bound thereby.

   Section 8.05. Expenses. (a) Except as set forth in this Section 8.05, all
Expenses (as defined below) incurred in connection with this Agreement and the
transactions contemplated by this Agreement shall be paid by the party
incurring such expenses, whether or not the Merger or any other transaction is
consummated, except that CBS and Viacom each shall pay one-half of all Expenses
relating to (i) printing, filing and mailing the Registration Statement and the
Proxy Statement and all SEC and other regulatory filing fees incurred in

                                      A-34
<PAGE>

connection with the Registration Statement and the Proxy Statement, (ii) any
filing with the FCC or similar authority and (iii) any filing with antitrust
authorities. "Expenses" as used in this Agreement shall include all reasonable
out-of-pocket expenses (including all fees and expenses of counsel,
accountants, investment bankers, experts and consultants to a party hereto and
its affiliates) incurred by a party or on its behalf in connection with or
related to the authorization, preparation, negotiation, execution and
performance of this Agreement, the preparation, printing, filing and mailing of
the Registration Statement and the Proxy Statement, the solicitation of
stockholder and shareholder approvals, the filing of any required notices under
the HSR Act or other similar regulations and all other matters related to the
closing of the Merger and the other transactions contemplated by this
Agreement.

   (b) CBS agrees that:

     (i) if CBS shall terminate this Agreement pursuant to Section 8.01(c);
  or

     (ii) if (A) Viacom or CBS shall terminate this Agreement pursuant to
  Section 8.01(d) due to the failure of CBS's shareholders to approve this
  Agreement, (B) at or prior to the time of such failure to so approve this
  Agreement a Competing Transaction with respect to CBS shall have been made
  public and (C) within twelve months after such termination (i) a Competing
  Transaction is consummated or (ii) a binding agreement to enter into a
  Competing Transaction is entered into by CBS (solely for purposes of this
  Section 8.05(b)(ii), the term "Competing Transaction" shall have the
  meaning assigned to such term in Section 6.05(b) except that references to
  "35%" in the definition of "Competing Transaction" in Section 6.05(b) shall
  be deemed to be references to 50%),

then CBS shall pay to Viacom an amount equal to $1,000,000,000 (the "CBS
Alternative Transaction Fee").

   (c) Each of CBS and Viacom agrees that the agreements contained in Section
8.05(b) are an integral part of the transactions contemplated by this
Agreement.

   (d) All payments to Viacom under this Section 8.05 shall be made by wire
transfer of immediately available funds to an account designated by Viacom.

                                   ARTICLE IX

                               General Provisions

   Section 9.01. Non-Survival of Representations, Warranties and
Agreements. The representations, warranties and agreements in this Agreement
and any certificate delivered pursuant hereto by any person shall terminate at
the Effective Time or upon the termination of this Agreement pursuant to
Section 8.01, as the case may be, except that this Section 9.01 shall not limit
any covenant or agreement of the parties which by its terms contemplates
performance after the Effective Time or after termination of this Agreement.

   Section 9.02. Notices. All notices, requests, claims, demands and other
communications hereunder shall be in writing and shall be given or made (and
shall be deemed to have been duly given or made upon receipt) by delivery in
person, by facsimile, by courier service or by registered or certified mail
(postage prepaid, return receipt requested) to the respective parties at the
following addresses (or at such other address for a party as shall be specified
in a notice given in accordance with this Section 9.02):

   if to Viacom:

       Viacom Inc.
       1515 Broadway
       New York, New York 10036
       Telecopier: (212) 258-6099
       Attention: Michael D. Fricklas, Senior Vice President,
                   General Counsel and Secretary

                                      A-35
<PAGE>

   with a copy to:

       Shearman & Sterling
       599 Lexington Avenue
       New York, New York 10022
       Telecopier No.: (212) 848-7179
       Attention: Creighton O'M. Condon, Esq. and
                   Stephen R. Volk, Esq.

   if to CBS:

       CBS Corporation
       51 West 52nd Street
       35th Floor
       New York, New York 10019
       Telecopier No.: (212) 597-4031
       Attention: Louis J. Briskman, Esq.
                   Executive Vice President and
                   General Counsel

   with copies to:

       Cravath, Swaine & Moore
       825 Eighth Avenue
       New York, New York 10019
       Telecopier No.: (212) 474-3700
       Attention: Allen Finkelson, Esq. and
                   Scott A. Barshay, Esq.

   Section 9.03. Interpretation, Certain Definitions. When a reference is made
in this Agreement to an Article, Section or Exhibit, such reference shall be to
an Article or Section of, or an Exhibit to, this Agreement unless otherwise
indicated. The table of contents and headings for this Agreement are for
reference purposes only and shall not affect in any way the meaning or
interpretation of this Agreement. Whenever the words "include", "includes" or
"including" are used in this Agreement, they shall be deemed to be followed by
the words "without limitation". The words "hereof", "herein" and "hereunder"
and words of similar import when used in this Agreement shall refer to this
Agreement as a whole and not to any particular provision of this Agreement. All
terms defined in this Agreement shall have the defined meanings when used in
any certificate or other document made or delivered pursuant hereto unless
otherwise defined therein. The definitions contained in this Agreement are
applicable to the singular as well as the plural forms of such terms and to the
masculine as well as to the feminine and neuter genders of such term. Any
statute defined or referred to herein or in any agreement or instrument that is
referred to herein means such statute as from time to time amended, modified or
supplemented, including (in the case of statutes) by succession of comparable
successor statutes. References to a person are also its permitted successors
and assigns.

     For purposes of this Agreement, the term:

     (a) "affiliate" of a specified person means a person who directly or
  indirectly through one or more intermediaries controls, is controlled by,
  or is under common control with, such specified person;

     (b) "beneficial owner" with respect to any shares means a person who
  shall be deemed to be the beneficial owner of such shares (i) which such
  person or any of its affiliates or associates (as such term is defined in
  Rule 12b-2 promulgated under the Exchange Act) beneficially owns, directly
  or indirectly, (ii) which such person or any of its affiliates or
  associates has, directly or indirectly, (A) the right to acquire (whether
  such right is exercisable immediately or subject only to the passage of
  time), pursuant to any agreement, arrangement or understanding or upon the
  exercise of consideration rights, exchange rights,

                                      A-36
<PAGE>

  warrants or options, or otherwise, or (B) the right to vote pursuant to any
  agreement, arrangement or understanding or (iii) which are beneficially
  owned, directly or indirectly, by any other persons with whom such person
  or any of its affiliates or associates or any person with whom such person
  or any of its affiliates or associates has any agreement, arrangement or
  understanding for the purpose of acquiring, holding, voting or disposing of
  any such shares;

     (c) "business day" means any day on which the principal offices of the
  SEC in Washington, D.C. are open to accept filings, or, in the case of
  determining a date when any payment is due, any day on which banks are not
  required or authorized to close in the City of New York;

     (d) "control" (including the terms "controlled by" and "under common
  control with") means the possession, directly or indirectly or as trustee
  or executor, of the power to direct or cause the direction of the
  management and policies of a person, whether through the ownership of
  voting securities, as trustee or executor, by contract or credit
  arrangement or otherwise;

     (e) "Governmental Authority" means any United States (federal, state or
  local) or foreign government, or governmental, regulatory or administrative
  authority, agency or commission;

     (f) "knowledge" means the actual knowledge of the following officers and
  employees of CBS and Viacom, without benefit of an independent
  investigation of any matter, as to (i) CBS: Mel Karmazin, Leslie Moonves,
  Louis Briskman and Robert Freedline, and (ii) Viacom: Sumner Redstone,
  Philippe Dauman, Thomas Dooley, Michael Fricklas, George Smith and Susan
  Gordon;

     (g) "person" means an individual, corporation, limited liability
  company, partnership, limited partnership, syndicate, person (including,
  without limitation, a "person" as defined in Section 13(d)(3) of the
  Exchange Act), trust, association or entity or government, political
  subdivision, agency or instrumentality of a government; and

     (h) "subsidiary" or "subsidiaries" of any person means any corporation,
  partnership, joint venture or other legal entity of which such person
  (either above or through or together with any other subsidiary), owns,
  directly or indirectly, more than 50% of the stock or other equity
  interests, the holders of which are generally entitled to vote for the
  election of the board of directors or other governing body of such
  corporation or other legal entity.

   Section 9.04. Severability. If any term or other provision of this Agreement
is invalid, illegal or incapable of being enforced by any rule of Law, or
public policy, all other conditions and provisions of this Agreement shall
nevertheless remain in full force and effect so long as the economic or legal
substance of the Merger is not affected in any manner materially adverse to any
party. Upon such determination that any term or other provision is invalid,
illegal or incapable of being enforced, the parties hereto shall negotiate in
good faith to modify this Agreement so as to effect the original intent of the
parties as closely as possible in a mutually acceptable manner in order that
the Merger be consummated as originally contemplated to the fullest extent
possible.

   Section 9.05. Entire Agreement; Assignment. This Agreement (including the
Exhibits, the CBS Disclosure Schedule and the Viacom Disclosure Schedule which
are hereby incorporated herein and made a part hereof for all purposes as if
fully set forth herein), the Parent Voting Agreements and the Confidentiality
Agreement constitutes the entire agreement among the parties with respect to
the subject matter hereof and supersede all prior agreements and undertakings,
both written and oral, among the parties, or any of them, with respect to the
subject matter hereof. The parties agree to comply with all covenants and
agreements set forth on the CBS Disclosure Schedule and the Viacom Disclosure
Schedule as if such covenants and agreements were fully set forth in this
Agreement. This Agreement shall not be assigned by operation of law or
otherwise.

   Section 9.06. Parties in Interest. This Agreement shall be binding upon and
inure solely to the benefit of each party hereto, and nothing in this
Agreement, express or implied, is intended to or shall confer upon any other
person any right, benefit or remedy of any nature whatsoever under or by reason
of this Agreement, other

                                      A-37
<PAGE>

than Article II and Section 6.06 (which are intended to be for the benefit of
the persons covered thereby and may be enforced by such persons).

   Section 9.07. Specific Performance. The parties hereto agree that
irreparable damage would occur in the event any provision of this Agreement was
not performed in accordance with the terms hereof and that the parties shall be
entitled to specific performance of the terms hereof, in addition to any other
remedy at law or equity.

   Section 9.08. Governing Law. This Agreement shall be governed by, and
construed in accordance with the laws of the State of Delaware, except for such
provisions where Pennsylvania Law is mandatorily applicable, which provisions
shall be governed by and construed in accordance with the laws of the
Commonwealth of Pennsylvania.

   Section 9.09. Consent to Jurisdiction. (a) Each of Viacom and CBS hereby
irrevocably submits to the exclusive jurisdiction of the courts of the State of
Delaware and to the jurisdiction of the United States District Court for the
State of Delaware, for the purpose of any action or proceeding arising out of
or relating to this Agreement and each of Viacom and CBS hereby irrevocably
agrees that all claims in respect to such action or proceeding may be heard and
determined exclusively in any Delaware state or federal court. Each of Viacom
and CBS agrees that a final judgment in any action or proceeding shall be
conclusive and may be enforced in other jurisdictions by suit on the judgment
or in any other manner provided by law.

   (b) Each of Viacom and CBS irrevocably consents to the service of the
summons and complaint and any other process in any other action or proceeding
relating to the transactions contemplated by this Agreement, on behalf of
itself or its property, by personal delivery of copies of such process to such
party. Nothing in this Section 9.09 shall affect the right of any party to
serve legal process in any other manner permitted by law.

   Section 9.10. Counterparts. This Agreement may be executed and delivered
(including by facsimile transmission) in one or more counterparts, and by the
different parties hereto in separate counterparts, each of which when executed
and delivered shall be deemed to be an original but all of which taken together
shall constitute one and the same agreement.

   Section 9.11. Waiver of Jury Trial. EACH OF VIACOM AND CBS HEREBY
IRREVOCABLY WAIVES ALL RIGHT TO TRIAL BY JURY IN ANY ACTION, PROCEEDING OR
COUNTERCLAIM (WHETHER BASED ON CONTRACT, TORT OR OTHERWISE) ARISING OUT OF OR
RELATING TO THIS AGREEMENT OR THE ACTIONS OF VIACOM OR CBS IN THE NEGOTIATION,
ADMINISTRATION, PERFORMANCE AND ENFORCEMENT THEREOF.

                  [REMAINDER OF PAGE INTENTIONALLY LEFT BLANK]

                                      A-38
<PAGE>

   IN WITNESS WHEREOF, Viacom and CBS have caused this Agreement to be executed
as of the date first written above by their respective officers thereunto duly
authorized.

                                          Viacom Inc.

                                               /s/ Michael D. Fricklas
                                          By: _________________________________

                                            Name:  Michael D. Fricklas

                                            Title: Senior Vice President

                                          CBS Corporation

                                                /s/ Fredric G. Reynolds
                                          By: _________________________________
                                            Name:  Fredric G. Reynolds
                                            Title: Executive Vice President,
                                                   Chief Financial Officer

                                      A-39
<PAGE>

                                                                    EXHIBIT 6.14

                            FORM OF AFFILIATE LETTER

Viacom Inc.
1515 Broadway
New York, New York 10036

Ladies and Gentlemen:

   I have been advised that as of the date of this letter I may be deemed to be
an "affiliate" of CBS Corporation, a Pennsylvania corporation (the "Company"),
as the term "affiliate" is defined for purposes of paragraphs (c) and (d) of
Rule 145 of the rules and regulations (the "Rules and Regulations") of the
Securities and Exchange Commission (the "Commission") under the Securities Act
of 1933, as amended (the "Act"). Pursuant to the terms of the Agreement and
Plan of Merger dated as of September 6, 1999, as amended and restated on
October 8, 1999 (the "Agreement"), between Viacom Inc., a Delaware corporation
("Viacom"), and the Company, the Company will be merged with and into Viacom
(the "Merger").

   As a result of the Merger, I may receive (i) shares of Class B common stock,
par value $.01 per share, of Viacom (the "Viacom Class B Common Stock"), (ii)
an option (a "Substituted Option") to purchase a number of shares of Viacom
Class B Common Stock, or (iii) shares of Viacom Series C Preferred Stock, par
value $.01 per share (the "Viacom Series C Preferred Stock," with the Viacom
Class B Common Stock, Substituted Options and the Viacom Series C Preferred
Stock collectively referred to as the "Viacom Securities"). In respect of
shares of Viacom Class B Common Stock, I would receive such shares in exchange
for shares owned by me of common stock, par value $1.00 per share, of the
Company (the "Company Common Stock"). In respect of the Substituted Options, I
would receive such options in exchange for options to purchase Company Common
Stock held by me under the CBS Stock Option Plans (as defined in the
Agreement). In respect of the Viacom Series C Preferred Stock, I would receive
such shares in exchange for shares owned by me of the Company's Series B
Participating Preferred Stock, par value $1.00 per share.

   I represent, warrant and covenant to Viacom that in the event I receive any
Viacom Securities as a result of the merger:

     A. I shall not make any sale, transfer or other disposition of the
  Viacom Securities in violation of the Act or the Rules and Regulations.

     B. I have carefully read this letter and the Agreement and discussed the
  requirements of such documents and other applicable limitations upon my
  ability to sell, transfer or otherwise dispose of Viacom Securities to the
  extent I felt necessary, with my counsel or counsel for the Company.

     C. I have been advised that the issuance of Viacom Securities to me
  pursuant to the Merger has been registered with the Commission under the
  Act on a Registration Statement Form S-4. However, I have also been advised
  that, because at the time the Merger is submitted for a vote of the
  stockholders of the Company, (a) I may be deemed to be an affiliate of the
  Company and (b) the distribution by me of the Viacom Securities has not
  been registered under the Act, I may not sell, transfer or otherwise
  dispose of Viacom Securities issued to me in the Merger unless (i) such
  sale, transfer or other disposition is made in conformity with the volume
  and other limitations of Rule 145 promulgated by the Commission under the
  Act, (ii) such sale, transfer or other disposition has been registered
  under the Act or (iii) in the opinion of counsel reasonably acceptable to
  Viacom, such sale, transfer or other disposition is otherwise exempt from
  registration under the Act.

     D. I understand that Viacom is under no obligation to register the sale,
  transfer or other disposition of the Viacom Securities by me or on my
  behalf under the Act or to take any other action necessary in order to make
  compliance with an exemption from such registration available solely as a
  result of the Merger.
<PAGE>

     E. I also understand that there will be placed on the certificates for
  the Viacom Securities issued to me, or any substitutions therefor, a legend
  stating in substance:

    "THE [SHARES] [OPTIONS] REPRESENTED BY THIS CERTIFICATE WERE
    ISSUED IN A TRANSACTION TO WHICH RULE 145 PROMULGATED UNDER THE
    SECURITIES ACT OF 1933 APPLIES. THE [SHARES] [OPTIONS]
    REPRESENTED BY THIS CERTIFICATE MAY ONLY BE TRANSFERRED IN
    ACCORDANCE WITH THE TERMS OF AN AGREEMENT DATED        BETWEEN
    THE REGISTERED HOLDER HEREOF AND VIACOM, A COPY OF WHICH
    AGREEMENT IS ON FILE AT THE PRINCIPAL OFFICES OF VIACOM."

     F. I also understand that unless a sale or transfer is made in
  conformity with the provisions of Rule 145, or pursuant to a registration
  statement, Viacom reserves the right to put the following legend on the
  certificates issued to my transferee:

    "THE [SHARES] [OPTIONS] REPRESENTED BY THIS CERTIFICATE HAVE NOT
    BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933 AND WERE
    ACQUIRED FROM A PERSON WHO RECEIVED SUCH SHARES IN A TRANSACTION
    TO WHICH RULE 145 PROMULGATED UNDER THE SECURITIES ACT OF 1933
    APPLIES. THE [SHARES] [OPTIONS] HAVE BEEN ACQUIRED BY THE HOLDER
    NOT WITH A VIEW TO, OR FOR RESALE IN CONNECTION WITH, ANY
    DISTRIBUTION THEREOF WITHIN THE MEANING OF THE SECURITIES ACT OF
    1933 AND MAY NOT BE SOLD, PLEDGED OR OTHERWISE TRANSFERRED
    EXCEPT IN ACCORDANCE WITH AN EXEMPTION FROM THE REGISTRATION
    REQUIREMENTS OF THE SECURITIES ACT OF 1933."

   It is understood and agreed that the legends set forth in paragraphs E and F
above shall be removed by delivery of substitute certificates without such
legend if the undersigned shall have delivered to Viacom a copy of a letter
from the staff of the Commission, or an opinion of counsel reasonably
satisfactory to Viacom in form and substance reasonably satisfactory to Viacom,
to the effect that such legend is not required for purposes of the Act.

   Execution of this letter should not be considered an admission on my part
that I am an "affiliate" of the Company as described in the first paragraph of
this letter, or as a waiver of any rights I may have to object to any claim
that I am such an affiliate on or after the date of this letter.

                                          Very truly yours,

                                          Name:

Accepted this     day of
      ,   , by

Viacom Inc.


By: _________________________________
  Name:
  Title:
<PAGE>



                                                                   ANNEX B

                     RESTATED CERTIFICATE OF INCORPORATION
                                      OF
                                  VIACOM INC.

   (Originally incorporated on November 10, 1986 under the name Arsenal
Holdings, Inc.)

                                   ARTICLE I

                                     Name

   The name of this Corporation is Viacom Inc.

                                  ARTICLE II

                    Registered Office and Agent for Service

   The registered office of the Corporation in the State of Delaware is
located at 1013 Centre Road, City of Wilmington, County of New Castle. The
name and address of the Corporation's registered agent for service of process
in Delaware is:

                          Corporation Service Company
                               1013 Centre Road
                        Wilmington, Delaware 19805-1297

                                  ARTICLE III

                              Corporate Purposes

   The purpose of the Corporation is to engage in any lawful act or activity
for which corporations may be organized under the General Corporation Law of
the State of Delaware.

                                  ARTICLE IV

                                 Capital Stock

   (1) Shares, Classes and Series Authorized.

     (a) The total number of shares of all classes of capital stock which the
  Corporation shall have authority to issue is 3,525,000,000 shares. The
  classes and the aggregate number of shares of stock of each class which the
  Corporation shall have authority to issue are as follows:

       (i) 500,000,000 shares of Class A Common Stock, $0.01 par value
    ("Class A Common Stock").

       (ii) 3,000,000,000 shares of Class B Common Stock, $0.01 par value
    ("Class B Common Stock").

       (iii) 25,000,000 shares of Preferred Stock, $0.01 par value
    ("Preferred Stock").

     (b) The number of authorized shares of Class B Common Stock may be
  increased or decreased (but not below the number of shares thereof then
  outstanding) from time to time by the affirmative vote of the holders of a
  majority of the stock of the Corporation entitled to vote.

                                      A-1
<PAGE>

   (2) Powers and Rights of the Class A Common Stock and the Class B Common
Stock.

   Except as otherwise expressly provided in this Restated Certificate of
Incorporation, all issued and outstanding shares of Class A Common Stock and
Class B Common Stock shall be identical and shall entitle the holders thereof
to the same rights and privileges.

     A. Voting Rights and Powers. Except as otherwise provided in this
  Restated Certificate of Incorporation or required by law, with respect to
  all matters upon which stockholders are entitled to vote, the holders of
  the outstanding shares of Class A Common Stock shall vote together with the
  holders of any other outstanding shares of capital stock of the Corporation
  entitled to vote, without regard to class, and every holder of outstanding
  shares of Class A Common Stock shall be entitled to cast thereon one vote
  in person or by proxy for each share of Class A Common Stock standing in
  his name. The holders of shares of Class A Common Stock shall have the
  relevant class voting rights set forth in Article IX. Except as otherwise
  required by law, the holders of outstanding shares of Class B Common Stock
  shall not be entitled to any votes upon any questions presented to
  stockholders of the Corporation, including but not limited to, whether to
  increase or decrease (but not below the number of shares then outstanding)
  the number of authorized shares of Class B Common Stock.

     B. Dividends. Subject to the rights and preferences of the Preferred
  Stock set forth in this Article IV and in any resolution or resolutions
  providing for the issuance of such stock as set forth in Section (3) of
  this Article IV, the holders of Class A Common Stock and Class B Common
  Stock shall be entitled to receive ratably such dividends as may from time
  to time be declared by the Board of Directors out of funds legally
  available therefor.

     C. Distribution of Assets Upon Liquidation. In the event the Corporation
  shall be liquidated, dissolved or wound up, whether voluntarily or
  involuntarily, after there shall have been paid or set aside for the
  holders of all shares of the Preferred Stock then outstanding the full
  preferential amounts to which they are entitled under Section 5 of this
  Article IV or the resolutions, as the case may be, authorizing the issuance
  of such Preferred Stock, the net assets of the Corporation remaining
  thereafter shall be divided ratably among the holders of Class A Common
  Stock and Class B Common Stock.

     D. Split, Subdivision or Combination. If the Corporation shall in any
  manner split, subdivide or combine the outstanding shares of Class A Common
  Stock or Class B Common Stock, the outstanding shares of the other class of
  Common Stock shall be proportionally split, subdivided or combined in the
  same manner and on the same basis as the outstanding shares of the other
  class of Common Stock have been split, subdivided or combined.

     E. Conversion. So long as there are 10,000 shares of Class A Common
  Stock outstanding, each record holder of shares of Class A Common Stock may
  convert any or all of such shares into an equal number of shares of Class B
  Common Stock by surrendering the certificates for such shares, accompanied
  by payment of documentary, stamp or similar issue or transfer taxes, if
  any, along with a written notice by such record holder to the Corporation
  stating that such record holder desires to convert such shares into the
  same number of shares of Class B Common Stock and requesting that the
  Corporation issue all of such Class B Common Stock to the persons named
  therein, setting forth the number of shares of Class B Common Stock to be
  issued to each such person and the denominations in which the certificates
  therefor are to be issued.

   (3) Powers and Rights of the Preferred Stock.

   Subject to Article XIII of this Restated Certificate of Incorporation, the
Preferred Stock may be issued from time to time in one or more series, with
such distinctive serial designations as may be stated or expressed in the
resolution or resolutions providing for the issue of such stock adopted from
time to time by the Board of Directors; and in such resolution or resolutions
providing for the issuance of shares of each particular series, the Board of
Directors is also expressly authorized to fix: the right to vote, if any; the
consideration for which the shares of such series are to be issued; the number
of shares constituting such series, which number may be

                                      A-2
<PAGE>

increased (except as otherwise fixed by the Board of Directors) or decreased
(but not below the number of shares thereof then outstanding) from time to time
by action of the Board of Directors; the rate of dividends upon which and the
times at which dividends on shares of such series shall be payable and the
preference, if any, which such dividends shall have relative to dividends on
shares of any other class or classes or any other series of stock of the
Corporation; whether such dividends shall be cumulative or noncumulative, and,
if cumulative, the date or dates from which dividends on shares of such series
shall be cumulative; the rights, if any, which the holders of shares of such
series shall have in the event of any voluntary or involuntary liquidation,
merger, consolidation, distribution or sale of assets, dissolution or winding
up of the affairs of the Corporation; the rights, if any, which the holders of
shares of such series shall have to convert such shares into or exchange such
shares for shares of any other class or classes or any other series of stock of
the Corporation or for any debt securities of the Corporation and the terms and
conditions, including, without limitation, price and rate of exchange, of such
conversion or exchange; whether shares of such series shall be subject to
redemption, and the redemption price or prices and other terms of redemption,
if any, for shares of such series including, without limitation, a redemption
price or prices payable in shares of Class A Common Stock or Class B Common
Stock; the terms and amounts of any sinking fund for the purchase or redemption
of shares of such series; and any and all other powers, preferences and
relative, participating, optional or other special rights and qualifications,
limitations or restrictions thereof pertaining to shares of such series
permitted by law.

   (4) Issuance of Class A Common Stock, Class B Common Stock and Preferred
Stock.

   Subject to Article XIII of this Restated Certificate of Incorporation, the
Board of Directors of the Corporation may from time to time authorize by
resolution the issuance of any or all shares of Class A Common Stock, Class B
Common Stock and Preferred Stock herein authorized in accordance with the terms
and conditions set forth in this Restated Certificate of Incorporation for such
purposes, in such amounts, to such persons, corporations, or entities, for such
consideration, and in the case of the Preferred Stock, in one or more series,
all as the Board of Directors in its discretion may determine and without any
vote or other action by any of the stockholders of the Corporation, except as
otherwise required by law.

   (5) Series C Preferred Stock

   (a) Designation and Amount. The shares of this series shall be designated as
"Series C Preferred Stock" (the "Series C Preferred Stock"). The par value of
each share of Series C Preferred Stock shall be $.01. The number of shares
constituting the Series C Preferred Stock shall initially be the Preferred
Exchange Ratio (as defined in the Amended and Restated Agreement and Plan of
Merger dated as of September 6, 1999, as amended and restated as of October 8,
1999, as it may be further amended from time to time, among the Corporation and
CBS (as defined in Article XIII of this Restated Certificate of
Incorporation)(the "Merger Agreement")) multiplied by the number of shares of
CBS Series B Participating Preferred Stock, par value $1.00 per share, issued
and outstanding immediately prior to the Effective Time (as defined in the
Merger Agreement). The Corporation is authorized to issue fractional shares of
Series C Preferred Stock to 1/1000th of a share in accordance with the terms
herein. All references herein to shares of Series C Preferred Stock shall be
deemed to include, if applicable, references to such fractional shares.

   (b). Dividends and Distributions.

   (1) Subject to the provisions for adjustment hereinafter set forth, the
holders of outstanding shares of Series C Preferred Stock shall be entitled to
receive, when, as and if declared by the Board of Directors out of funds
legally available for the purpose, a cash dividend in an amount per share
(rounded to the nearest cent) equal to 1000 times the aggregate per share
amount of each cash dividend declared or paid on the Class B Common Stock. In
addition, in the event the Corporation shall, at any time after the issuance of
any share or fraction of a share of Series C Preferred Stock, pay any dividend
or make any distribution on the shares of Class B Common Stock of the
Corporation, whether by way of a dividend or a reclassification of stock, a
recapitalization, reorganization or partial liquidation of the Corporation or
otherwise, which is payable in cash or any debt security, debt instrument, real
or personal property or any other property (other than (x) cash dividends
subject to the immediately preceding sentence, (y) a distribution of shares of
Class B Common Stock

                                      A-3
<PAGE>

or other capital stock of the Corporation subject to paragraph (h)(1) below or
(z) a distribution of rights or warrants to acquire any such shares subject to
paragraph (h)(3) or (h)(5) below, including as such a right any debt security
convertible into or exchangeable for any such shares, at a price less than the
Fair Market Value (as hereinafter defined) of such shares on the date of
issuance of such rights or warrants), then, and in each such event, the
Corporation shall simultaneously pay on each then outstanding share of Series C
Preferred Stock a distribution, in like kind, of 1000 times such distribution
paid on a share of Class B Common Stock (subject to the provisions for
adjustment hereinafter set forth). The dividends and distributions on the
Series C Preferred Stock to which holders thereof are entitled pursuant to the
first and second sentences of this paragraph (b)(1) are hereinafter referred to
as "Dividends" and the multiple of such cash and non-cash dividends and
distributions on the Class B Common Stock applicable to the determination of
the Dividends, which shall be 1000 initially but shall be adjusted from time to
time as hereinafter provided, is hereinafter referred to as the "Dividend
Multiple." In the event the Corporation shall, at any time after the issuance
of any share or fraction of a share of Series C Preferred Stock, declare or pay
any dividend or make any distribution on Class B Common Stock payable in shares
of Class B Common Stock, or effect a subdivision or split or a combination,
consolidation or reverse split of the outstanding shares of Class B Common
Stock into a greater or lesser number of shares of Class B Common Stock, then
in each such case the Dividend Multiple thereafter applicable to the
determination of the amount of Dividends which holders of shares of Series C
Preferred Stock shall be entitled to receive shall be the Dividend Multiple
applicable immediately prior to such event multiplied by a fraction the
numerator of which is the number of shares of Class B Common Stock outstanding
immediately after such event and the denominator of which is the number of
shares of Class B Common Stock that were outstanding immediately prior to such
event.

   (2) The Corporation shall declare each Dividend at the same time it declares
any cash or non-cash dividend or distribution on the Class B Common Stock in
respect of which a Dividend is required to be paid. No cash or non-cash
dividend or distribution on the Class B Common Stock in respect of which a
Dividend is required to be paid shall be paid or set aside for payment on the
Class B Common Stock unless a Dividend in respect of such dividend or
distribution on the Class B Common Stock shall be simultaneously paid, or set
aside for payment, on the Series C Preferred Stock.

   (3) All Dividends paid with respect to shares of the Series C Preferred
Stock shall be paid pro rata on a share-by-share basis to the holders entitled
thereto.

   (4) The holders of shares of Series C Preferred Stock shall not be entitled
to receive any dividends or distributions except as provided herein.

   (c) Voting Rights. The holders of record of outstanding shares of Series C
Preferred Stock shall have the following voting rights:

     (1) Subject to the provisions for adjustment hereinafter set forth, each
  share of Series C Preferred Stock shall entitle the holder thereof to 100
  votes on all matters submitted to a vote of the holders of the Common
  Stock. The number of votes which a holder of a share of Series C Preferred
  Stock is entitled to cast, as the same may be adjusted from time to time as
  hereinafter provided, is hereinafter referred to as the "Vote Multiple." In
  the event the Corporation shall, at any time after the issuance of any
  share or fraction of a share of Series C Preferred Stock, declare or pay
  any dividend on Class A Common Stock, payable in shares of Class A Common
  Stock, or effect a subdivision or split or a combination, consolidation or
  reverse split of the outstanding shares of Class A Common Stock into a
  greater or lesser number of shares of Class A Common Stock, then in each
  such case the Vote Multiple thereafter applicable to the determination of
  the number of votes per share to which holders of shares of Series C
  Preferred Stock shall be entitled after such event shall be the Vote
  Multiple applicable immediately prior to such event multiplied by a
  fraction the numerator of which is the number of shares of Class A Common
  Stock outstanding immediately after such event and the denominator of which
  is the number of shares of Class A Common Stock that were outstanding
  immediately prior to such event.


                                      A-4
<PAGE>

     (2) Except as otherwise provided in this Restated Certificate of
  Incorporation or required by law, the holders of shares of Series C
  Preferred Stock and the holders of shares of Class A Common Stock shall
  vote together as one class on all matters submitted to a vote of
  shareholders of the Corporation.

     (3) Except as otherwise provided in this Restated Certificate of
  Incorporation or required by law, holders of Series C Preferred Stock shall
  have no other special voting rights and their consent shall not be required
  (except to the extent they are entitled to vote with holders of Class A
  Common Stock as set forth herein) for the taking of any corporate action.

   (d) Conversion. The shares of Series C Preferred Stock shall be convertible
as follows:

     (1) Each share of Series C Preferred Stock shall be convertible, at the
  option of the holder thereof, at any time after the date of issuance of
  such share at the office of the Corporation or any transfer agent for the
  Series C Preferred Stock. Subject to the provisions for adjustment
  hereinafter set forth, each share of Series C Preferred Stock shall be
  convertible into 1000 shares of Class B Common Stock. The number of shares
  of Class B Common Stock into which each share of Series C Preferred Stock
  may be converted is hereinafter referred to as the "Conversion Rate." In
  the event the Corporation shall, at any time after the issuance of any
  share or fraction of a share of Series C Preferred Stock, declare or pay
  any dividend or make any distribution on Class B Common Stock payable in
  shares of Class B Common Stock, or effect a subdivision or split or a
  combination, consolidation or reverse split of the outstanding shares of
  Class B Common Stock into a greater or lesser number of shares of Class B
  Common Stock, then in each such case the Conversion Rate thereafter
  applicable shall be the Conversion Rate applicable immediately prior to
  such event multiplied by a fraction the numerator of which is the number of
  shares of Class B Common Stock outstanding immediately after such event and
  the denominator of which is the number of shares of Class B Common Stock
  that were outstanding immediately prior to such event.

     (2) No fractional shares of Class B Common Stock shall be issued upon
  conversion of the Series C Preferred Stock. In lieu of any fractional
  shares to which the holder would otherwise be entitled, the Corporation
  shall pay cash equal to such fraction multiplied by the then Fair Market
  Value per share of the Class B Common Stock. For such purpose, all shares
  of Series C Preferred Stock being converted by a holder shall be
  aggregated, and any resulting fractional share of Class B Common Stock
  shall be paid in cash. Before any holder of shares of Series C Preferred
  Stock shall be entitled to convert the same into full shares of Class B
  Common Stock, and to receive certificates therefor, the holder shall
  surrender the certificate or certificates representing the shares of Series
  C Preferred Stock, duly endorsed, at the office of the Corporation or of
  any transfer agent for the Series C Preferred Stock, and shall give written
  notice to the Corporation at such office that such holder elects to convert
  the same.

     The Corporation shall, as soon as practicable after such delivery, issue
  and deliver at such office to such holder of Series C Preferred Stock a
  certificate or certificates for the number of shares of Class B Common
  Stock to which such holder shall be entitled and a check payable to such
  holder in the amount of any cash amount payable as the result of a
  conversion into fractional shares of Class B Common Stock, plus any
  declared and unpaid dividends on the converted Series C Preferred Stock.
  Such conversion shall be deemed to have been made immediately prior to the
  close of business on the date of receipt of such surrender of the shares of
  Series C Preferred Stock to be converted, and the person or persons
  entitled to receive the shares of Class B Common Stock issuable upon such
  conversion shall be treated for all purposes as the record holder or
  holders of such shares of Class B Common Stock on such date.

     (3) The Corporation shall at all times reserve and keep available out of
  its authorized but unissued shares of Class B Common Stock, solely for the
  purpose of effecting the conversion of the shares of Series C Preferred
  Stock, such number of shares of Class B Common Stock as shall from time to
  time be sufficient to effect the conversion of all outstanding shares of
  Series C Preferred Stock.

     (4) Any notice required by the provisions of this Section 4 to be given
  to the holders of shares of Series C Preferred Stock or to the Corporation
  shall be given via facsimile transmission or via certified or registered
  U.S. mail or via private overnight delivery service, if to the holder, at
  (615) 316-6570 or such

                                      A-5
<PAGE>

  holder's address appearing on the books of the Corporation, and if to the
  Corporation, at 1515 Broadway, New York, NY 10036, attention General
  Counsel, facsimile no.: 212-258-6134, or such other facsimile number or
  address as the holder or the Corporation shall notify the other of in
  accordance with the notice provisions set forth in this paragraph (d)(5).
  Notice shall be deemed to have been given on the date of facsimile
  transmission (if the notice is faxed) or five days after mailing (if the
  notice is mailed) or the day after the notice is given to the delivery
  service (if sent by overnight courier).

   (e) Certain Restrictions.

     (1) Whenever Dividends are in arrears or the Corporation shall be in
  default on payment thereof, thereafter and until all accrued and unpaid
  Dividends, whether or not declared, on shares of Series C Preferred Stock
  outstanding shall have been paid or set irrevocably aside for payment in
  full, and in addition to any and all other rights which any holder of
  shares of Series C Preferred Stock may have in such circumstances, the
  Corporation shall not:

       (i) declare or pay dividends on, make any other distributions on, or
    redeem or purchase or otherwise acquire for consideration, any shares
    of stock ranking junior (either as to dividends or upon liquidation,
    dissolution or winding up) to the Series C Preferred Stock;

       (ii) declare or pay dividends on or make any other distributions on
    any shares of stock ranking on a parity as to dividends with the Series
    C Preferred Stock, unless dividends are paid ratably on the Series C
    Preferred Stock and all such parity stock on which dividends are
    payable or in arrears in proportion to the total amounts to which the
    holders of all such shares are then entitled if the full dividends
    accrued thereon were to be paid;

       (iii) except as permitted by subparagraph (iv) of this paragraph
    (e)(1), redeem or purchase or otherwise acquire for consideration
    shares of any stock ranking on a parity (either as to dividends or upon
    liquidation, dissolution or winding up) with the Series C Preferred
    Stock, provided that the Corporation may at any time redeem, purchase
    or otherwise acquire shares of any such parity stock in exchange for
    shares of any stock of the Corporation ranking junior (both as to
    dividends and upon liquidation, dissolution or winding up) to the
    Series C Preferred Stock; or

       (iv) purchase or otherwise acquire for consideration any shares of
    Series C Preferred Stock, or any shares of stock ranking on a parity
    with the Series C Preferred Stock (either as to dividends or upon
    liquidation, dissolution or winding up) except as permitted by
    subparagraph (iii) of this paragraph (e)(1) or in accordance with a
    purchase offer made to all holders of such shares upon such terms as
    the Board of Directors, after consideration of the respective annual
    dividend rates and other relative rights and preferences of the
    respective series and classes, shall determine in good faith will
    result in fair and equitable treatment among the respective series or
    classes.

     (2) The Corporation shall not permit any Subsidiary (as hereinafter
  defined) of the Corporation to purchase or otherwise acquire for
  consideration any shares of stock of the Corporation unless the Corporation
  could, under subparagraph (1) of this paragraph (e), purchase or otherwise
  acquire such shares at such time and in such manner. A "Subsidiary" of the
  Corporation shall mean any corporation or other entity of which securities
  or other ownership interests entitled to cast at least a majority of the
  votes that would be entitled to be cast in an election of the board of
  directors of such corporation or other entity or other persons performing
  similar functions are beneficially owned, directly or indirectly, by the
  Corporation or by any corporation or other entity that is otherwise
  controlled by the Corporation.

     (3) The Corporation shall not issue any shares of Series C Preferred
  Stock except pursuant to the Merger Agreement, a copy of which is on file
  with the Secretary of the Corporation at its principal executive offices
  and shall be made available to holders of Series C Preferred Stock without
  charge upon written request therefor addressed to the Secretary of the
  Corporation at the address set forth in paragraph (d)(4) above.
  Notwithstanding the foregoing sentence, nothing contained in the provisions
  of this Article IV shall prohibit or restrict the Corporation from issuing
  for any purpose any series of Preferred Stock with rights and privileges
  similar to, different from, or greater than, those of the Series C
  Preferred Stock

                                      A-6
<PAGE>

  or, subject to the limitations set forth in paragraph (n), from creating
  other securities senior to, junior to or on a parity with the Series C
  Preferred Stock.

   (f) Reacquired Shares. Any shares of Series C Preferred Stock purchased or
otherwise acquired by the Corporation in any manner whatsoever shall be retired
and canceled promptly after the acquisition thereof. All such shares upon their
retirement and cancellation shall become authorized but unissued shares of
Preferred Stock, without designation as to series, and such shares may be
redesignated and reissued as part of any series of Preferred Stock.

   (g) Liquidation, Dissolution or Winding Up.

   (1) Upon any voluntary or involuntary liquidation, dissolution or winding up
of the Corporation, no distribution shall be made (i) to the holders of shares
of stock ranking junior (upon liquidation, dissolution or winding up) to the
Series C Preferred Stock unless the holders of shares of Series C Preferred
Stock outstanding shall have received out of the assets of the Corporation
available for distribution to its shareholders after payment or provision for
payment of any securities ranking senior to the Series C Preferred Stock, for
each share of Series C Preferred Stock, subject to adjustment as hereinafter
provided, (A) $.01 plus an amount equal to accrued and unpaid dividends and
distributions thereon, whether or not declared, to the date of such payment or,
(B) if greater than the amount specified in clause (i)(A) of this sentence, an
amount equal to 1000 times the aggregate amount to be distributed per share to
holders of Class B Common Stock, as the same may be adjusted as hereinafter
provided, and (ii) to the holders of stock ranking on a parity upon
liquidation, dissolution or winding up with the Series C Preferred Stock,
unless simultaneously therewith distributions are made ratably on the Series C
Preferred Stock and all other shares of such parity stock in proportion to the
total amounts to which the holders of shares of Series C Preferred Stock are
entitled under clause (i)(A) of this sentence and to which the holders of such
parity shares are entitled, in each case upon such liquidation, dissolution or
winding up. The amount to which holders of Series C Preferred Stock may be
entitled upon liquidation, dissolution or winding up of the Corporation
pursuant to clause (i)(B) of the foregoing sentence is hereinafter referred to
as the "Participation Liquidation Amount" and the multiple of the amount to be
distributed to holders of shares of Class B Common Stock upon the liquidation,
dissolution or winding up of the Corporation applicable pursuant to said clause
to the determination of the Participating Liquidation Amount, as said multiple
may be adjusted from time to time as hereinafter provided, is hereinafter
referred to as the "Liquidation Multiple". In the event the Corporation shall,
at any time after the issuance of any share or fraction of a share of Series C
Preferred Stock, declare or pay any dividend or make any distribution on Class
B Common Stock payable in shares of Class B Common Stock, or effect a
subdivision or split or a combination, consolidation or reverse split of the
outstanding shares of Class B Common Stock into a greater or lesser number of
shares of Class B Common Stock, then in each such case the Liquidation Multiple
thereafter applicable to the determination of the Participating Liquidation
Amount to which holders of Series C Preferred Stock shall be entitled after
such event shall be the Liquidation Multiple applicable immediately prior to
such event multiplied by a fraction the numerator of which is the number of
shares of Common Stock outstanding immediately after such event and the
denominator of which is the number of shares of Common Stock that were
outstanding immediately prior to such event. Except as provided in this
paragraph (g)(1), holders of Series C Preferred Stock shall not be entitled to
any distribution in the event of liquidation, dissolution or winding up of the
Corporation.

   (2) For the purposes of this paragraph (g), none of the following shall be
deemed to be a voluntary or involuntary liquidation, dissolution or winding up
of the Corporation:

     (i) the voluntary sale, conveyance, lease, exchange or transfer (for
  cash, shares of stock, securities or other consideration) of all or
  substantially all of the property or assets of the Corporation;

     (ii) the consolidation or merger of the Corporation with or into one or
  more other corporations or other associations;


                                      A-7
<PAGE>

     (iii) the consolidation or merger of one or more corporations or other
  associations with or into the Corporation; or

     (iv) the participation by the Corporation in a share exchange.

   (h) Certain Reclassifications and Other Events.

   (1) In the event that holders of shares of Class B Common Stock receive,
after the issuance of any share or fraction of a share of Series C Preferred
Stock, in respect of their shares of Class B Common Stock any share of capital
stock of the Corporation (other than any share of Class B Common Stock),
whether by way of reclassification, recapitalization, reorganization, dividend
or other distribution or otherwise (a "Class B Transaction"), then, and in each
such event, the dividend rights, conversion rights and rights upon the
liquidation, dissolution or winding up of the Corporation of the shares of
Series C Preferred Stock shall be adjusted so that after such Transaction the
holders of Series C Preferred Stock shall be entitled, in respect of each share
of Series C Preferred Stock held, in addition to such rights in respect thereof
to which such holder was entitled immediately prior to such adjustment, (i) to
such additional dividends as equal the Dividend Multiple in effect immediately
prior to such Class B Transaction multiplied by the additional dividends which
the holder of a share of Class B Common Stock shall be entitled to receive by
virtue of the receipt in the Class B Transaction of such capital stock, (ii)
upon surrender of shares of Series C Preferred Stock for conversion, to the
aggregate number and kind of shares of capital stock of the Corporation which,
if such shares of Series C Preferred Stock had been converted immediately prior
to such Class B Transaction, such holder would have been entitled to receive by
virtue of such Class B Transaction and (iii) to such additional distributions
upon liquidation, dissolution or winding up of the Corporation as equal the
Liquidation Multiple in effect immediately prior to such Class B Transaction
multiplied by the additional amount which the holder of a share of Class B
Common Stock shall be entitled to receive upon liquidation, dissolution or
winding up of the Corporation by virtue of the receipt in the Class B
Transaction of such capital stock, as the case may be, all as provided by the
terms of such capital stock.

   (2) In the event that holders of shares of Class A Common Stock receive,
after the issuance of any share or fraction of a share of Series C Preferred
Stock, in respect of their shares of Class A Common Stock any share of capital
stock of the Corporation (other than any share of Class A Common Stock),
whether by way of reclassification, recapitalization, reorganization, dividend
or other distribution or otherwise (a "Class A Transaction"), then, and in each
such event, the voting rights of the shares of Series C Preferred Stock shall
be adjusted so that after such Class A Transaction the holders of Series C
Preferred Stock shall be entitled, in respect of each share of Series C
Preferred Stock held, in addition to such rights in respect thereof to which
such holder was entitled immediately prior to such adjustment, to such
additional voting rights as equal the Vote Multiple in effect immediately prior
to such Class A Transaction multiplied by the additional voting rights to which
the holder of a share of Class A Common Stock shall be entitled by virtue of
the receipt in the Class A Transaction of such capital stock.

   (3) In the event that holders of shares of Class B Common Stock receive,
after the issuance of any share or fraction of a share of Series C Preferred
Stock, in respect of their shares of Class B Common Stock any right or warrant
to purchase Class B Common Stock (including as such a right, for all purposes
of this paragraph (h)(3), any security convertible into or exchangeable for
Class B Common Stock) at a purchase price per share less than the Fair Market
Value of a share of Class B Common Stock on the date of issuance of such right
or warrant, then and in each such event the dividend rights, conversion rights
and rights upon the liquidation, dissolution or winding up of the Corporation
of the shares of Series C Preferred Stock shall each be adjusted so that after
such event the Dividend Multiple, the Conversion Rate and the Liquidation
Multiple shall each be the product of the Dividend Multiple, the Conversion
Rate and the Liquidation Multiple, as the case may be, in effect immediately
prior to such event multiplied by a fraction the numerator of which shall be
the number of shares of Class B Common Stock outstanding immediately before
such issuance of rights or warrants plus the maximum number of shares of Class
B Common Stock which could be acquired upon exercise in full of all such rights
or warrants and the denominator of which shall be the number of shares of Class
B Common Stock

                                      A-8
<PAGE>

outstanding immediately before such issuance of rights or warrants plus the
number of shares of Class B Common Stock which could be purchased, at the Fair
Market Value of the Class B Common Stock at the time of such issuance, by the
maximum aggregate consideration payable upon exercise in full of all such
rights or warrants.

   (4) In the event that holders of shares of Class A Common Stock receive,
after the issuance of any share or fraction of a share of Series C Preferred
Stock, in respect of their shares of Class A Common Stock any right or warrant
to purchase Class A Common Stock (including as such a right, for all purposes
of this paragraph (h)(4), any security convertible into or exchangeable for
Class A Common Stock) at a purchase price per share less than the Fair Market
Value of a share of Class A Common Stock on the date of issuance of such right
or warrant, then and in each such event the voting rights of the shares of
Series C Preferred Stock shall be adjusted so that after such event the Vote
Multiple shall be the product of the Vote Multiple in effect immediately prior
to such event multiplied by a fraction the numerator of which shall be the
number of shares of Class A Common Stock outstanding immediately before such
issuance of rights or warrants plus the maximum number of shares of Class A
Common Stock which could be acquired upon exercise in full of all such rights
or warrants and the denominator of which shall be the number of shares of Class
A Common Stock outstanding immediately before such issuance of rights or
warrants plus the number of shares of Class A Common Stock which could be
purchased, at the Fair Market Value of the Class A Common Stock at the time of
such issuance, by the maximum aggregate consideration payable upon exercise in
full of all such rights or warrants.

   (5) In the event that holders of shares of Class B Common Stock of the
Corporation receive, after the issuance of any share or fraction of a share of
Series C Preferred Stock, in respect of their shares of Class B Common Stock
any right or warrant to purchase capital stock of the Corporation (other than
shares of Class B Common Stock), including as such a right, for all purposes of
this paragraph (h)(5), any security convertible into or exchangeable for
capital stock of the Corporation (other than Class B Common Stock) at a
purchase price per share less than the Fair Market Value of a share of such
capital stock on the date of issuance of such right or warrant, then and in
each such event the dividend rights, conversion rights and rights upon
liquidation, dissolution or winding up of the Corporation of the shares of
Series C Preferred Stock shall each be adjusted so that after such event each
holder of a share of Series C Preferred Stock shall be entitled, in respect of
each share of Series C Preferred Stock held, in addition to such rights in
respect thereof to which such holder was entitled immediately prior to such
event, to receive (i) such additional dividends as equal the Dividend Multiple
in effect immediately prior to such event multiplied, first, by the additional
dividends to which the holder of a share of Class B Common Stock shall be
entitled upon exercise of such right or warrant by virtue of the capital stock
which could be acquired upon such exercise, and multiplied again by the
Discount Fraction (as hereinafter defined), (ii) such additional conversion
rights as equal the Conversion Rate in effect immediately prior to such event
multiplied by a fraction the numerator of which shall be the Fair Market Value
per share of Class B Common Stock on the date of such event less the Fair
Market Value of the portion of the right or warrant so distributed applicable
to one share of Class B Common Stock and the denominator of which shall be the
Fair Market Value per share of Class B Common Stock on the date of such event
and (iii) such additional distributions upon liquidation, dissolution or
winding up of the Corporation as equal the Liquidation Multiple in effect
immediately prior to such event multiplied, first, by the additional amount
which the holder of a share of Class B Common Stock shall be entitled to
receive upon liquidation, dissolution or winding up of the Corporation upon
exercise of such right or warrant by virtue of the capital stock which could be
acquired upon such exercise, and multiplied again by the Discount Fraction. For
purposes of this paragraph, the "Discount Fraction" shall be a fraction the
numerator of which shall be the difference between the Fair Market Value of a
share of the capital stock subject to a right or warrant distributed to holders
of shares of Class B Common Stock of the Corporation as contemplated by this
paragraph (h)(5) immediately after the distribution thereof and the purchase
price per share for such share of capital stock pursuant to such right or
warrant and the denominator of which shall be the Fair Market Value of a share
of such capital stock immediately after the distribution of such right or
warrant.


                                      A-9
<PAGE>

   (6) In the event that holders of shares of Class A Common Stock of the
Corporation receive, after the issuance of any share or fraction of a share of
Series C Preferred Stock, in respect of their shares of Class A Common Stock
any right or warrant to purchase capital stock of the Corporation (other than
shares of Class A Common Stock), including as such a right, for all purposes of
this paragraph (h)(6), any security convertible into or exchangeable for
capital stock of the Corporation (other than Class A Common Stock) at a
purchase price per share less than the Fair Market Value of a share of such
capital stock on the date of issuance of such right or warrant, then and in
each such event the voting rights of the shares of Series C Preferred Stock
shall be adjusted so that after such event each holder of a share of Series C
Preferred Stock shall be entitled, in respect of each share of Series C
Preferred Stock held, in addition to such rights in respect thereof to which
such holder was entitled immediately prior to such event, to receive such
additional voting rights as equal the Vote Multiple in effect immediately prior
to such event multiplied, first, by the additional voting rights to which the
holder of a share of Class A Common Stock shall be entitled upon exercise of
such right or warrant by virtue of the capital stock which could be acquired
upon such exercise, and multiplied again by the Voting Discount Fraction (as
hereinafter defined). For purposes of this paragraph, the "Voting Discount
Fraction" shall be a fraction the numerator of which shall be the difference
between the Fair Market Value of a share of the capital stock subject to a
right or warrant distributed to holders of shares of Class A Common Stock of
the Corporation as contemplated by this paragraph (h)(6) immediately after the
distribution thereof and the purchase price per share for such share of capital
stock pursuant to such right or warrant and the denominator of which shall be
the Fair Market Value of a share of such capital stock immediately after the
distribution of such right or warrant.]

   (7) For purposes of this Section 5 of Article IV, the "Fair Market Value" of
a share of capital stock of the Corporation on any date shall be deemed to be
the average of the daily closing price per share thereof over the 15
consecutive Trading Days (as hereinafter defined) immediately prior to such
date; provided, however, that in the event the Fair Market Value of any such
share of capital stock is determined during a period which includes any date
that is within 15 Trading Days after (i) the ex-dividend date for a dividend or
distribution on stock payable in shares of such stock or securities convertible
into shares of such stock, or (ii) the effective date of any subdivision,
split, combination, consolidation, reverse stock split or reclassification of
such capital stock, then, and in each such case, the Fair Market Value shall be
appropriately adjusted by the Board of Directors of the Corporation to take
into account ex-dividend or post-effective date trading. The closing price for
any day shall be the last sale price, regular way, or, in case no such sale
takes place on such day, the average of the closing bid and asked prices,
regular way (in either case, as reported in the applicable transaction
reporting system with respect to securities listed or admitted to trading on
the New York Stock Exchange), or, if the shares are not listed or admitted to
trading on the New York Stock Exchange, as reported in the applicable
transaction reporting system with respect to securities listed on the principal
national securities exchange on which the shares are listed or admitted to
trading or, if the shares are not listed or admitted to trading on any national
securities exchange, the last quoted price or, if not so quoted, the average of
the high bid and low asked prices in the over-the-counter market, as reported
by The Nasdaq Stock Market or such other system then in use, or if on any such
date the shares are not quoted by any such organization, the average of the
closing bid and asked prices as furnished by a professional market maker making
a market in the shares selected by the Board of Directors of the Corporation.
The term "Trading Day" shall mean a day on which the principal national
securities exchange on which the shares are listed or admitted to trading is
open for the transaction of business or, if the shares are not listed or
admitted to trading on any national securities exchange, on which the New York
Stock Exchange or such other national securities exchange as may be selected by
the Board of Directors of the Corporation is open. If the shares are not
publicly held or not so listed or traded on any day within the 15 Trading Day
period applicable to the determination of Fair Market Value thereof as
aforesaid, "Fair Market Value" shall mean the fair market value thereof per
share as determined in good faith by the Board of Directors of the Corporation.
In either case referred to in the foregoing sentence, the determination of Fair
Market Value shall be described in a statement filed with the Secretary of the
Corporation.

   (i) Consolidation, Merger, etc. In case the Corporation shall enter into any
consolidation, merger, division, share exchange, combination, sale of all or
substantially all of the Corporation's assets, or other

                                      A-10
<PAGE>

transaction in which the shares of Class B Common Stock are exchanged for or
changed into other securities, cash and/or any other property, then in any such
case each outstanding share of Series C Preferred Stock shall at the same time
be similarly exchanged for or changed into the aggregate amount of securities,
cash and/or other property (payable in like kind), as the case may be, for
which or into which each share of Class B Common Stock is changed or exchanged
multiplied by the highest of the Dividend Multiple, the Conversion Rate or the
Liquidation Multiple in effect immediately prior to such event; provided,
however, that no fractional share or scrip representing fractional shares of
any other securities shall be issued. Instead of any fractional interest in a
share of such other securities which would otherwise be deliverable pursuant to
this paragraph (i), the Corporation will pay to the holder thereof an amount in
cash (computed to the nearest cent) equal to the same fraction of the Fair
Market Value of a share of such other security or such other amount as may be
set forth in the agreement governing the related consolidation, division, share
exchange, combination, sale of all or substantially all of the Corporation's
assets or other transactions.

   (j) Effective Time of Adjustments.

   (1) Adjustments to the Series C Preferred Stock required by the provisions
hereof shall be effective as of the time at which the event requiring such
adjustments occurs.

   (2) The Corporation shall give prompt written notice to each holder of a
share of outstanding Series C Preferred Stock of the effect of any adjustment
to the voting rights, dividend rights, conversion rights or rights upon
liquidation, dissolution or winding up of the Corporation of such shares
required by the provisions hereof. Notwithstanding the foregoing sentence, the
failure of the Corporation to give such notice shall not affect the validity or
the force or effect of, or the requirement for, such adjustment.

   (k)  No Redemption.  The shares of Series C Preferred Stock shall not be
redeemable at the option of the Corporation or any holder thereof.
Notwithstanding the foregoing sentence of this paragraph (11), the Corporation
may acquire shares of Series C Preferred Stock in any other manner permitted by
law, the provisions of this Restated Certificate of Incorporation.

   (l) Ranking. Unless otherwise provided in this Restated Certificate of
Incorporation or in any certificate of designation relating to the
determination of a subsequent series of Preferred Stock, the Series C Preferred
Stock shall rank senior to the Class B Common Stock and the Class A Common
Stock and the Series C Preferred Stock shall rank junior to all other series of
Preferred Stock as to the payment of dividends and the distribution of assets
on liquidation, dissolution or winding up.

   (m) Limitations. Except as may otherwise be required by law, the shares of
Series C Preferred Stock shall not have any powers, preferences or relative,
participating, optional or other special rights other than those specifically
set forth in this Article IV (as such may be amended from time to time) or
otherwise in the Restated Certificate of Incorporation.

   (n) Amendment. So long as any shares of the Series C Preferred Stock are
outstanding, the Corporation shall not amend this Article IV or the Restated
Certificate of Incorporation in any manner which would alter or change the
rights, preferences or limitations of the Series C Preferred Stock so as to
affect such rights, preferences or limitations in any material respect
prejudicial to the holders of the Series C Preferred Stock without, in addition
to any other vote of shareholders required by law, the affirmative vote of the
holders of at least two-thirds of the outstanding shares of Series C Preferred
Stock, voting together as a single class either in writing or by resolution
adopted at an annual or special meeting called for the purpose; provided,
however, that the creation of another series of Preferred Stock ranking senior
to or on a parity with the Series C Preferred Stock as to the payment of
dividends or the distribution of assets on liquidation, dissolution or winding
up, or which has equivalent or greater voting rights than the Series C
Preferred Stock, in each case shall not be deemed to be prejudicial to the
holders of the Series C Preferred Stock for the purposes of this paragraph (n).

                                      A-11
<PAGE>

                                   ARTICLE V

                                   Directors

   (1) Power of the Board of Directors. Subject to Article XIII of this
Restated Certificate of Incorporation, the property and business of the
Corporation shall be controlled and managed by or under the direction of its
Board of Directors. In furtherance, and not in limitation of the powers
conferred by the laws of the State of Delaware, the Board of Directors is
expressly authorized, subject in all cases to Article XIII of this Restated
Certificate of Incorporation:

     (a) To make, alter, amend or repeal the By-Laws of the Corporation;
  provided that no By-Laws hereafter adopted shall invalidate any prior act
  of the Directors that would have been valid if such By-Laws had not been
  adopted;

     (b) To determine the rights, powers, duties, rules and procedures that
  affect the power of the Board of Directors to manage and direct the
  property, business and affairs of the Corporation, including, without
  limitation, the power to designate and empower committees of the Board of
  Directors, to elect, appoint and empower the officers and other agents of
  the Corporation, and to determine the time and place of, and the notice
  requirements for Board meetings, as well as the manner of taking Board
  action; and

     (c) To exercise all such powers and do all such acts as may be exercised
  by the Corporation, subject to the provisions of the laws of the State of
  Delaware, this Restated Certificate of Incorporation, and the By-Laws of
  the Corporation.

   (2) Number and Qualifications of Directors. The number of directors
constituting the entire Board of Directors shall be fixed from time to time by
resolution of the Board of Directors but shall not be less than three nor more
than twenty. Directors shall be elected to hold office for a term of one year.
As used in this Restated Certificate of Incorporation, the term "entire Board
of Directors" means the total number of Directors fixed in the manner provided
in this Article V Section (2) and in the By-Laws.

                                   ARTICLE VI

                         Indemnification Of Directors,
                              Officers and Others

   (1) Action Not By or on Behalf of Corporation. The Corporation shall
indemnify any person who was or is a party or is threatened to be made a party
to any threatened, pending or completed action, suit or proceeding, whether
civil, criminal, administrative or investigative (other than an action by or in
the right of the Corporation) by reason of the fact that he is or was a
Director, officer, employee or agent of the Corporation, or is or was serving
at the request of the Corporation as a director, officer, employee or agent
(including, without limitation, a trustee) of another corporation, partnership,
joint venture, trust or other enterprise, against judgments, fines, amounts
paid in settlement and expenses (including, without limitation, attorneys'
fees), actually and reasonably incurred by him in connection with such action,
suit or proceeding if he acted in good faith and in a manner reasonably
believed to be in or not opposed to the best interests of the Corporation, and
with respect to any criminal action or proceeding, had no reasonable cause to
believe his conduct was unlawful. The termination of any action, suit or
proceeding by judgment, order, settlement, conviction, or upon a plea of nolo
contendere or its equivalent, shall not, of itself, create a presumption that
the person did not act in good faith and in a manner which he reasonably
believed to be in or not opposed to the best interests of the Corporation, and,
with respect to any criminal action or proceeding, had reasonable cause to
believe that his conduct was unlawful.

   (2) Action By or on Behalf of Corporation. The Corporation shall indemnify
any person who was or is a party or is threatened to be made a party to any
threatened, pending or completed action or suit by or in the right of the
Corporation to procure a judgment in its favor by reason of the fact that he is
or was a Director, officer, employee or agent of the Corporation, or is or was
serving at the request of the Corporation as a

                                      A-12
<PAGE>

director, officer, employee or agent of another corporation, partnership, joint
venture, trust, or other enterprise against expenses (including, without
limitation, attorneys' fees) actually and reasonably incurred by him in
connection with the defense or settlement of such action or suit if he acted in
good faith and in a manner he reasonably believed to be in or not opposed to
the best interests of the Corporation, except that no indemnification shall be
made in respect of any claim, issue or matter as to which such person shall
have been adjudged to be liable to the Corporation unless and only to the
extent that the court in which such action or suit was brought shall determine
upon application that, despite the adjudication of liability and in view of all
of the circumstances of the case, such person is fairly and reasonably entitled
to indemnity for such expenses which the court shall deem proper.

   (3) Successful Defense. To the extent that a present or former Director,
officer, employee or agent of the Corporation has been successful on the merits
or otherwise in defense of any action, suit or proceeding referred to in
Section 1 or 2 of this Article VI, or in defense of any claim, issue or matter
therein, he shall be indemnified against expenses (including, without
limitation, attorneys' fees) actually and reasonably incurred by him in
connection therewith.

   (4) Determination of Right to Indemnification in Certain Circumstances. Any
indemnification under Section 1 or 2 of this Article VI (unless ordered by a
court) shall be made by the Corporation only as authorized in the specific case
upon a determination that indemnification of the present or former Director,
officer, employee or agent is proper in the circumstances because he has met
the applicable standard of conduct set forth in Section 1 or 2 of this Article
IV. Such determination shall be made, with respect to a person who is a
Director or officer at the time of such determination, (1) by a majority vote
of the Directors who are not parties to such action, suit or proceeding, even
though less than a quorum, or (2) by a committee of such Directors designated
by a majority vote of such Directors, even though less than a quorum, or (3) if
there are no such Directors, or if such Directors so direct, by independent
legal counsel in a written opinion, or (4) by the stockholders of the
Corporation entitled to vote thereon.

   (5) Advance Payment of Expenses.

     (a) Expenses (including attorneys' fees) incurred by a Director or
  officer in defending any civil, criminal, administrative or investigative
  action, suit or proceeding shall be paid by the Corporation in advance of
  the final disposition of such action, suit or proceeding upon receipt of an
  undertaking by or on behalf of such Director or officer, to repay such
  amount if it shall ultimately be determined that he is not entitled to be
  indemnified by the Corporation as authorized in this Article.

     (b) Expenses (including attorneys' fees) incurred by any other employee
  or agent in defending any civil, criminal, administrative or investigative
  action, suit or proceeding may be paid by the Corporation in advance of the
  final disposition of such action, suit or proceeding upon such terms and
  conditions, if any, as the Corporation deems appropriate.

   (6) Not Exclusive. The indemnification and advancement of expenses provided
by, or granted pursuant to, the other sections of this Article VI shall not be
deemed exclusive of any other rights to which a person seeking indemnification
or advancement of expenses may be entitled under any statute, by-law,
agreement, vote of stockholders or disinterested Directors or otherwise, both
as to action in his official capacity and as to action in another capacity
while holding such office. Without limiting the foregoing, the Corporation is
authorized to enter into an agreement with any Director, officer, employee or
agent of the Corporation providing indemnification for such person against
expenses, including, without limitation, attorneys' fees, judgments, fines and
amounts paid in settlement that result from any threatened, pending or
completed action, suit, or proceeding, whether civil, criminal, administrative
or investigative, including, without limitation, any action by or in the right
of the Corporation, that arises by reason of the fact that such person is or
was a Director, officer, employee or agent of the Corporation, or is or was
serving at the request of the Corporation as a director, officer, employee or
agent of another corporation, partnership, joint venture, trust or other
enterprise, to the full extent allowed by law, except that no such agreement
shall provide for indemnification for any actions that constitute fraud, actual
dishonesty or willful misconduct.

                                      A-13
<PAGE>

   (7) Insurance. The Corporation may purchase and maintain insurance on behalf
of any person who is or was a Director, officer, employee or agent of the
Corporation, or is or was serving as the request of the Corporation as a
director, officer, employee or agent of another corporation, partnership, joint
venture, trust or other enterprise against any liability asserted against him
and incurred by him in any such capacity, or arising out of his status as such,
whether or not the Corporation would have the power to indemnify him against
such liability under the provisions of this Article VI.

   (8) Certain Definitions. For the purposes of this Article VI, (A) any
Director, officer, employee or agent of the Corporation who shall serve as a
director, officer, employee or agent of any other corporation, joint venture,
trust or other enterprise of which the Corporation, directly or indirectly, is
or was a stockholder or creditor, or in which the Corporation is or was in any
way interested, or (B) any director, officer, employee or agent of any
subsidiary corporation, joint venture, trust or other enterprise wholly owned
by the Corporation, shall be deemed to be serving as such director, officer,
employee or agent at the request of the Corporation, unless the Board of
Directors of the Corporation shall determine otherwise. In all other instances
where any person shall serve as a director, officer, employee or agent of
another corporation, joint venture, trust or other enterprise of which the
Corporation is or was a stockholder or creditor, or in which it is or was
otherwise interested, if it is not otherwise established that such person is or
was serving as such director, officer, employee or agent at the request of the
Corporation, the Board of Directors of the Corporation may determine whether
such service is or was at the request of the Corporation, and it shall not be
necessary to show any actual or prior request for such service. For purposes of
this Article VI, references to a corporation include all constituent
corporations absorbed in a consolidation or merger as well as the resulting or
surviving corporation so that any person who is or was a director, officer,
employee or agent of such a constituent corporation or is or was serving at the
request of such constituent corporation as a director, officer, employee or
agent of another corporation, joint venture, trust or other enterprise shall
stand in the same position under the provisions of this Article VI with respect
to the resulting or surviving corporation as he would if he had served the
resulting or surviving corporation in the same capacity. For purposes of this
Article VI, references to "other enterprises" shall include employee benefit
plans; references to "fines" shall include any excise taxes assessed on a
person with respect to an employee benefit plan; and references to "serving at
the request of the Corporation" shall include any service as a director,
officer, employee or agent of the Corporation which imposes duties on, or
involves services by, such director, officer, employee, or agent with respect
to an employee benefit plan, its participants, or beneficiaries, and a person
who acted in good faith and in a manner he reasonably believed to be in the
interest of the participants and beneficiaries of an employee benefit plan
shall be deemed to have acted in a manner "not opposed to the best interests of
the Corporation" as referred to in this Article VI.

   (9) The indemnification and advancement of expenses provided by, or granted
pursuant to, this Article VI shall, unless otherwise provided when authorized
or ratified, continue as to a person who has ceased to be a director, officer,
employee or agent and shall inure to the benefit of the heirs, executors and
administrators of such a person.

                                  ARTICLE VII

                     Director Liability to the Corporation

   (a) A Director's liability to the Corporation for breach of duty to the
Corporation or its stockholders shall be limited to the fullest extent
permitted by Delaware law as now in effect or hereafter amended. In particular
no Director of the Corporation shall be liable to the Corporation or any of its
stockholders for monetary damages for breach of fiduciary duty as a director,
except for liability (i) for any breach of the Director's duty of loyalty to
the Corporation or its stockholders, (ii) for acts or omissions not in good
faith or which involve intentional misconduct or a knowing violation of law,
(iii) under Section 174 of the Delaware General Corporation Law, as the same
exists or hereafter may be amended, or (iv) for any transaction from which the
Director derived an improper personal benefit.

                                      A-14
<PAGE>

   (b) Any repeal or modification of the foregoing paragraph (a) by the
stockholders of the Corporation entitled to vote thereon shall not adversely
affect any right or protection of a director of the Corporation existing at the
time of such repeal or modification.

   (c) If the General Corporation Law of the State of Delaware is amended to
authorize corporate action further eliminating or limiting the liability of
directors, then a director of the Corporation, in addition to the circumstances
in which he is not now liable, shall be free of liability to the fullest extent
permitted by the General Corporation Law of the State of Delaware, as so
amended.

                                  ARTICLE VIII

                         Reservation of Right to Amend
                          Certificate of Incorporation

   Subject to Article XIII of this Restated Certificate of Incorporation, the
Corporation reserves the right to amend, alter, change or repeal any provision
contained in this Restated Certificate of Incorporation in the manner now or
hereafter prescribed by law, and all the provisions of this Restated
Certificate of Incorporation and all rights and powers conferred in this
Restated Certificate of Incorporation on stockholders, directors and officers
are subject to this reserved power.

   Each reference in the Restated Certificate of Incorporation to "the Restated
Certificate of Incorporation," "hereunder," "hereof," or words of like import
and each reference to the Restated Certificate of Incorporation set forth in
any amendment to the Restated Certificate of Incorporation shall mean and be a
reference to the Restated Certificate of Incorporation as supplemented and
amended through such amendment to the Restated Certificate of Incorporation.

                                   ARTICLE IX

                                 Voting Rights

   (1) Class A Common Stock. In addition to any other approval required by law
or by this Restated Certificate of Incorporation, the affirmative vote of a
majority of the then outstanding shares of Class A Common Stock, voted
separately as a class, shall be necessary to approve any consolidation of the
Corporation with another corporation, any merger of the Corporation into
another corporation or any merger of any other corporation into the Corporation
pursuant to which shares of Common Stock are converted into or exchanged for
any securities or any other consideration.

   (2) Preferred Stock. Subject to Article XIII of this Restated Certificate of
Incorporation, in addition to any other approval required by law or by this
Restated Certificate of Incorporation, each particular series of any class of
Preferred Stock shall have such right to vote, if any, as shall be fixed in the
resolution or resolutions, adopted by the Board of Directors, providing for the
issuance of shares of such particular series.

                                   ARTICLE X

                                Stock Ownership
                      and the Federal Communications Laws

   (1) Requests for Information. So long as the Corporation or any of its
subsidiaries holds any authorization from the Federal Communications Commission
(or any successor thereto), if the Corporation has reason to believe that the
ownership, or proposed ownership, of shares of capital stock of the Corporation
by any stockholder or any person presenting any shares of capital stock of the
Corporation for transfer into his name (a "Proposed Transferee") may be
inconsistent with, or in violation of, any provision of the Federal

                                      A-15
<PAGE>

Communications Laws (as hereinafter defined), such stockholder or Proposed
Transferee, upon request of the Corporation, shall furnish promptly to the
Corporation such information (including, without limitation, information with
respect to citizenship, other ownership interests and affiliations) as the
Corporation shall reasonably request to determine whether the ownership of, or
the exercise of any rights with respect to, shares of capital stock of the
Corporation by such stockholder or Proposed Transferee is inconsistent with, or
in violation of, the Federal Communications Laws. For purposes of this Article
X, the term "Federal Communications Laws" shall mean any law of the United
States now or hereafter in effect (and any regulation thereunder) pertaining to
the ownership of, or the exercise of the rights of ownership with respect to,
capital stock of corporations holding, directly or indirectly, Federal
Communications Commissions authorizations, including, without limitation, the
Communications Act of 1934, as amended (the "Communications Act"), and
regulations thereunder pertaining to the ownership, or the exercise of the
rights of ownership, of capital stock of corporations holding, directly or
indirectly, Federal Communications Commission authorizations, by (i) aliens, as
defined in or under the Communications Act, as it may be amended from time to
time, (ii) persons and entities having interests in television or radio
stations, daily newspapers and cable television systems or (iii) persons or
entities, unilaterally or otherwise, seeking direct or indirect control of the
Corporation, as construed under the Communications Act, without having obtained
any requisite prior Federal regulatory approval to such control.

   (2) Denial of Rights, Refusal to Transfer. If any stockholder or Proposed
Transferee from whom information is requested should fail to respond to such
request pursuant to Section (1) of this Article or the Corporation shall
conclude that the ownership of, or the exercise of any rights of ownership with
respect to, shares of capital stock of the Corporation, by such stockholder or
Proposed Transferee, could result in any inconsistency with, or violation of,
the Federal Communications Laws, the Corporation may refuse to permit the
transfer of shares of capital stock of the Corporation to such Proposed
Transferee, or may suspend those rights of stock ownership the exercise of
which would result in any inconsistency with, or violation of, the Federal
Communications Laws, such refusal of transfer or suspension to remain in effect
until the requested information has been received and the Corporation has
determined that such transfer, or the exercise of such suspended rights, as the
case may be, is permissible under the Federal Communications Laws, and the
Corporation may exercise any and all appropriate remedies, at law or in equity,
in any court of competent jurisdiction, against any such stockholder or
Proposed Transferee, with a view towards obtaining such information or
preventing or curing any situation which would cause any inconsistency with, or
violation of, any provision of the Federal Communications Laws.

   (3) Legends. The Corporation may note on the certificates of its capital
stock that the shares represented by such certificates are subject to the
restrictions set forth in this Article.

   (4) Certain Definitions. For purposes of this Article, the word "person"
shall include not only natural persons but partnerships, associations,
corporations, joint ventures and other entities, and the word "regulation"
shall include not only regulations but rules, published policies and published
controlling interpretations by an administrative agency or body empowered to
administer a statutory provision of the Federal Communications Laws.

                                   ARTICLE XI
                    Transactions with Directors And Officers

   No contract or transaction between the Corporation and one or more of its
directors or officers, or between the Corporation and any other corporation,
partnership, association, or other organization in which one or more of its
directors or officers are directors or officers, or have a financial interest,
shall be void or voidable solely for this reason, or solely because the
director or officer is present at or participates in the meeting of the board
or committee thereof which authorizes the contract or transaction, or solely
because his or their votes are counted for such purpose if (a) the material
facts as to his relationship or interest and as to the contract or transaction
are disclosed or are known to the Board of Directors or the committee, and the
Board of Directors

                                      A-16
<PAGE>

or the committee in good faith authorizes the contract or transaction by the
affirmative votes of a majority of the disinterested directors, even though the
disinterested directors be less than a quorum, or (b) the material facts as to
his relationship or interest and as to the contract or transaction are
disclosed or are known to the stockholders entitled to vote thereon, and the
contract or transaction is specifically approved in good faith by vote of such
stockholders, or (c) the contract or transaction is fair as to the Corporation
as of the time it is authorized, approved or ratified by the Board of
Directors, a committee thereof, or the stockholders entitled to vote thereon.
Common or interested directors may be counted in determining the presence of a
quorum at a meeting of the Board of Directors or of a committee which
authorizes the contract or transaction.

                                  ARTICLE XII

                         Compromise and Reorganization

   Whenever a compromise or arrangement is proposed between this Corporation
and its creditors or any class of them and/or between this Corporation and its
stockholders or any class of them, any court of equitable jurisdiction within
the State of Delaware may, on the application in a summary way of this
Corporation or of any creditor or stockholder thereof or on the application of
any receiver or receivers appointed for this Corporation under the provisions
of Section 291 of Title 8 of the Delaware Code or on the application of
trustees in dissolution or of any receiver or receivers appointed for this
Corporation under the provisions of Section 279 of Title 8 of the Delaware Code
order a meeting of the creditors or class of creditors, and/or of the
stockholders or class of stockholders of this Corporation, as the case may be,
to be summoned in such manner as the said court directs. If a majority in
number representing three-fourths in value of the creditors or class of
creditors, and/or of the stockholders or class of stockholders of this
Corporation, as the case may be, agrees to any compromise or arrangement and to
any reorganization of the Corporation as a consequence of such compromise or
arrangement, the said compromise or arrangement and the said reorganization
shall, if sanctioned by the court to which the said application has been made,
be binding on all the creditors or class of creditors, and/or on all the
stockholders or class of stockholders, of this Corporation, as the case may be,
and also on this Corporation.

                                  ARTICLE XIII

                         Governance of the Corporation
                            During Specified Period

   (1) Definitions. As used in this Article XIII, the following terms shall
have the following meanings:

     (a) "CBS" shall mean CBS Corporation, a Pennsylvania corporation,
  immediately prior to the Effective Time.

     (b) "CBS Directors" shall mean (i) eight (8) of those directors serving
  as members of the Board of Directors of CBS on September 6, 1999 (or any
  Independent Directors elected or appointed prior to the Effective Time to
  serve as a CBS Director) who are designated as such by the Board of
  Directors of CBS prior to the Effective Time and (ii) any Replacement CBS
  Director (as defined in Section 2(b) of this Article XIII).

     (c) "CEO" shall mean the Chief Executive Officer.

     (d) "COO" shall mean the President and Chief Operating Officer.

     (e) "Effective Time" shall mean the time of filing of the Certificate of
  Merger to which this Certificate of Incorporation is attached.

     (f) "Independent Director" shall mean a disinterested, independent
  person (determined in accordance with customary standards for independent
  directors applicable to U.S. public companies).

     (g) "NAI" shall mean National Amusements, Inc., a Maryland corporation,
  and its successors or assigns.


                                      A-17
<PAGE>

     (h) "Specified Independent Directors" shall mean the directors of the
  Corporation first elected after 1993 and who are not management of the
  Corporation or NAI (together with any replacements of such persons).

     (i) "Specified Period" shall mean the period of three years commencing
  at the Effective Time.

     (j) "Stockholder Agreement" shall mean the Stockholder Agreement dated
  as of September 6, 1999, by and between NAI and CBS, relating to
  Corporation governance matters.

     (k) "Viacom Directors" shall mean the ten (10) directors of the
  Corporation serving as the Board of Directors of the Corporation
  immediately prior to the Effective Time (including the Specified
  Independent Directors).

   (2) Directors.

   (a) Effective immediately at the Effective Time, the Board of Directors
shall consist of eighteen (18) directors. The number of directors may be fixed
by resolution of the Board from time to time, provided, however, that the size
of the Board of Directors may not be changed during the Specified Period
without the approval of at least fourteen (14) directors. At the Effective
Time, ten (10) directors shall be Viacom Directors and eight (8) directors
shall be CBS Directors.

   (b) Until the expiration of the Specified Period, the Board of Directors
(subject to the fiduciary duties of the directors) shall take all action
necessary to ensure that any seat on the Board of Directors held by (i) a CBS
Director which becomes vacant is filled promptly by a person qualifying as an
Independent Director and designated to fill such seat by a majority of the CBS
Directors remaining on the Board of Directors (a "Replacement CBS Director")
and (ii) a Specified Independent Director which becomes vacant is filled
promptly by an Independent Director who is the chief executive officer, chief
operating officer or chief financial officer or former chief executive officer
of a Fortune 500 company or a non-U.S. public company of comparable size.

   (c) During the Specified Period, all committees of the Board of Directors
(other than the Compensation Committee and the Officers Nominating Committee)
shall have such number of CBS Directors as equals the total number of members
of the Committee multiplied by a fraction, the numerator of which is eight (8)
and the denominator of which is eighteen (18), rounded to the closest whole
number; provided that in no event shall any committee have (x) fewer than one
(1) CBS Director or (y) less than a majority of Viacom Directors.

   (d) During the Specified Period, the Board of Directors shall not take any
action or fail to take any action which would have the effect of eliminating,
limiting, restricting, avoiding or otherwise modifying the effect of the
provisions set forth in this Article XIII (e.g., by creating a holding company
structure if the certificate of incorporation or similar document of such
holding company does not contain equivalent provisions).

   (3) Chairman and Chief Executive Officer.

   (a) At the Effective Time, Sumner Redstone shall remain the Chairman and
CEO. In the event that Sumner Redstone is not the CEO at the Effective Time or
ceases to be the CEO at any time during the Specified Period, then Mel
Karmazin, if he is COO at such time, shall succeed to the position of CEO for
the remainder of the Specified Period. During any such period of succession,
Mel Karmazin shall continue to exercise the powers, rights, functions and
responsibilities of the COO in addition to exercising those of the CEO.

   (b) The Chairman shall chair all meetings of the Board of Directors and
stockholders at which he is present.

   (c) The CEO shall be responsible, in consultation with the COO, for
corporate policy and strategy and the COO shall consult on all major decisions
with, and shall report directly to, the CEO, during the Specified

                                      A-18
<PAGE>

Period; provided, however, that the CEO shall not exercise any powers, rights,
functions or responsibilities of the COO unless Mel Karmazin is the CEO.

   (4) President and Chief Operating Officer.

   (a) At the Effective Time, the President and Chief Operating Officer of the
Corporation shall be Mel Karmazin. During the Specified Period, Mel Karmazin
may not be terminated or demoted from the position of COO (or, in the event
that Sumner Redstone is not the CEO, from the position of CEO) and no COO
Functions (as defined below) may be changed without the affirmative vote of at
least fourteen (14) directors.

   (b) Subject to the requirement that the COO consult with the CEO on all
major decisions, the powers, rights, functions and responsibilities of the COO
(collectively, the "COO Functions") shall include, without limitation, the
following:

     (i) supervising, coordinating and managing the Corporation's business,
  operations, activities, operating expenses and capital allocation;

     (ii) matters relating to officers (other than the Chairman, CEO and COO)
  and employees, including, without limitation, hiring (subject to (A) the
  specific Board of Directors authority described below with respect to the
  CFO, the General Counsel and the Controller and (B) Section 5 below),
  terminating, changing positions and allocating responsibilities of such
  officers and employees; and

     (iii) substantially all of the powers, rights, functions and
  responsibilities typically exercised by a chief operating officer.

  All officers (other than the Chairman, CEO and COO) will report, directly or
indirectly, to the COO (this reporting relationship will be deemed a COO
Function).

   (c) In the event that Mel Karmazin is not COO or CEO, the Board may
terminate the COO's employment, eliminate the COO position and the Officers
Nominating Committee and reallocate the COO Functions without regard to the
other provisions of this Article XVIII.

   (5) Officers Nominating Committee; Compensation Committee.

   (a) Subject to the powers of the Compensation Committee set forth below,
during the Specified Period, all powers of the Board of Directors, including,
without limitation, the right to hire, elect, terminate, change positions,
allocate responsibilities or determine non-equity compensation, with respect to
officers and employees, shall be exercised, subject to clauses (b) and (c)
below, by, and delegated to, the Officers Nominating Committee of the Board of
Directors. The Officers Nominating Committee shall consist solely of the member
of the Board of Directors who is the COO, except that in the event Mel Karmazin
succeeds to the position of CEO, the sole member of the Officers Nominating
Committee shall be the member of the Board of Directors who is the CEO.

   (b) The Officers Nominating Committee shall have no powers with respect to
the Chairman, CEO and COO, and shall not have the power to fill the positions
of Chief Financial Officer, Controller or General Counsel of the Corporation
without the approval of the Board of Directors; provided that this provision
shall in no way affect the other powers and authorities of the Officers
Nominating Committee with respect to the Chief Financial Officer, Controller
and General Counsel positions, including, without limitation, the power to
terminate employment of persons holding such positions.

   (c) The Compensation Committee shall not be required to, or have any power
to, approve the annual compensation of (i) any employee if the total value of
such employee's annual cash compensation (assuming for this purpose that the
actual bonus of each officer and employee is equal to his or her target bonus)
is less than $1 million or (ii) talent (as such term is commonly used in the
media or entertainment industries), in each such case which power shall be
delegated to the Officers Nominating Committee. The annual compensation of

                                      A-19
<PAGE>

all other officers and employees and any equity or equity-based compensation of
any officer or employee must be approved by the Compensation Committee.

   (d) The Compensation Committee shall consist of three CBS Directors who are
Independent Directors and three non-CBS Directors, two of whom will be the
Specified Independent Directors and the other of whom will be an Independent
Director.

   (e) Any decision or determination of the Officers Nominating Committee may
be reversed or overridden by (and only by) the affirmative vote of at least
fourteen (14) directors.

   (6) Stockholder Agreement.

   The Stockholder Agreement may not be amended, and no provision thereof may
be modified or waived, except with the approval of at least fourteen (14)
directors.

   (7) Issuance of Voting Stock.

   During the Specified Period, in addition to any other approval required by
law or by this Restated Certificate of Incorporation, the Corporation may not
issue (i) additional shares of Class A Common Stock or (ii) any shares of
Preferred Stock or any other class or series of stock or securities, in each
case with, or convertible into or exchangeable or exercisable for stock or
other securities with, the right to vote on any matter on which stockholders
are entitled to vote if the result would be that parties bound by the
Stockholder Agreement could fail to own at least a majority of the outstanding
shares of voting stock of the Corporation.

   (8) Voting.

   During the Specified Period, except for those actions set forth on Annex I
to this Restated Certificate of Incorporation, which shall require the approval
of the Board of Directors, all action by the Board of Directors shall require
the affirmative vote of at least fourteen (14) directors. At all meetings of
the Board of Directors a majority of the full Board of Directors shall
constitute a quorum for the transaction of business and the act of a majority
of the Directors present at any meeting at which there is a quorum shall be the
act of the Board of Directors, except as may be otherwise specifically provided
by statute or this Restated Certificate of Incorporation. If a quorum shall not
be present at any meeting of the Board of Directors, the Directors present
thereat may adjourn the meeting from time to time, without notice other than
announcement at the meeting, until a quorum shall be present.

   (9) Amendment.

   Until the expiration of the Specified Period the provisions of any Article
of this Restated Certificate which refer to this Article XIII, the provisions
of this Article XIII, and the provisions of Article VIII of the by-laws of the
Corporation, may not be amended, altered, repealed or waived in any respect
without the approval of at least fourteen (14) directors.

   (10) Successors.

   During the Specified Period, the provisions of this Article XIII shall be
applicable to (i) any successor to the Corporation as the result of a merger,
consolidation or other business combination, whether or not the Corporation is
the surviving company in such transaction, or otherwise and (ii) any
corporation or other entity with respect to which the Corporation or its
successor is or becomes a direct or indirect subsidiary, the Board of Directors
shall not permit the Corporation to be a party to any transaction which would
not comply with the foregoing without the approval of at least fourteen (14)
directors.

                                      A-20
<PAGE>

   (11) Subsidiaries.

   The Board of Directors shall have the right, following consultation with the
COO or, if Mel Karmazin is the CEO, the CEO, with respect to any public company
which is a subsidiary of the Corporation, to take such steps as the Board of
Directors reasonably determines are necessary to implement corporate governance
arrangements applicable to such subsidiary in a manner as consistent as
practicable with the provisions contained in this Restated Certificate of
Incorporation; provided that any such steps shall not vest in the Board of
Directors greater power or provide the COO with fewer rights than those
provided for in this Restated Certificate of Incorporation.


                                      A-21
<PAGE>

                                                                         ANNEX I
                                                         TO VIACOM INC. RESTATED
                                                    CERTIFICATE OF INCORPORATION

   The provisions of this Annex I shall form a part of, and be incorporated in
all respects in, the Restated Certificate of Incorporation to which this Annex
I is attached. The following actions shall require the approval of a majority
of the directors:

A. Acquisitions, Divestitures, Joint Ventures, Guarantees

  . Any acquisition, equity investment or joint venture (each an
    "Acquisition") by the Corporation or any of its subsidiaries for more
    than $25 million.

  . Any divestiture or other sale of assets (each a "Divestiture") (not in
    the ordinary course) by the Corporation or any of its subsidiaries for
    more than $25 million (based on purchase price or net book value of
    assets).

  . Any real estate purchase, sale or lease by the Corporation or any of its
    subsidiaries for more than $25 million.

  . Any guarantee by the Corporation or any of its subsidiaries of an
    obligation of a third party where the obligation guaranteed is more than
    $25 million.

  . Notwithstanding the above, any Acquisition or Divestiture by the
    Corporation or any of its subsidiaries of (a) internet or internet
    related businesses for more than $25 million but less than $100 million,
    with the value thereof represented by multi-year commitments for
    advertising, promotion and content licensing, is excluded, so long as the
    aggregate of such Acquisitions or Divestitures, in each case, does not
    exceed $550 million and (b) radio or outdoor advertising businesses for
    more than $25 million but less than $100 million, is excluded, so long as
    the aggregate of such Acquisitions or Divestitures, in each case, does
    not exceed $300 million; provided that (i) any Divestiture of shares of a
    publicly traded internet or internet related business with a value of up
    to $75 million is excluded and shall not be included in the calculation
    of any of the threshold amounts set forth above, (ii) Board approval may
    be secured (but is not required) for any transaction of more than $25
    million but less than $100 million where the regular meeting schedule of
    the Board so permits (and shall not otherwise be required), (iii) the
    Board will be provided with information about and a status report on such
    transactions completed without Board approval and (iv) this limit of
    authority will be reviewed in 12 months from the Effective Time (as
    defined in Article XIII of the Restated Certificate) and may be amended
    only with the approval of 14 members of the Board of Directors.

  . Any contract of the Corporation or any of its subsidiaries not in the
    ordinary course with a value in excess of $25 million.

  . Notwithstanding the above, any of the foregoing transactions that is
    approved by the Board shall not be included in the calculation of any of
    the threshold amounts set forth above.

B. Employee Matters

  . Employee benefit plans (at the Corporation or a subsidiary): (a) creating
    a new plan, (b) suspending or terminating an existing plan, (c) any
    amendment that materially increases cost to the Corporation or
    subsidiary.

  . Entering into any modifications or amendments to the employment
    agreements with the CEO or the COO.

C. General

  .  The Annual Report on Form 10-K.


                                      A-22
<PAGE>

  .  Proxy statement and notice of meeting (including annual or special
     meeting date, location, record date for voting).

  .  Any issuance of Corporation stock, or options, warrants or other similar
     rights (including stock appreciation rights) or debt or other securities
     convertible into or exchangeable for Corporation stock.

  .  Any issuance of debt unless such debt is short term and is within the
     spending limits of the annual operating budget or is replacing existing
     debt.

  .  Annual capital expenditure and annual operating budgets and individual
     capital expenditure transactions in excess of $25 million for the
     Corporation or any of its subsidiaries.

  .  Any Corporation or subsidiary pays a dividend or repurchases stock from
     a third party.

  .  Review and approve any action or transaction where Board action is
     required by law (other than (S) 141(a) of the Delaware General
     Corporation Law) or by the terms of the transaction (in all cases other
     than as specifically set forth in the Restated Certificate of
     Incorporation).

  .  Review and approve Board minutes.

  .  Subject to Article XIII of the Restated Certificate of Incorporation,
     determine Board administration, including number of directors, meeting
     schedule, nominees, committees, director compensation, D&O insurance
     authorization, internal investigations and retention of advisors in
     connection therewith, and decisions regarding indemnification of
     individuals.

  .  Subject to Article XIII of the Restated Certificate of Incorporation,
     amendments to the Restated Certificate of Incorporation and by-laws of
     the Corporation.

  .  Commencement and settlement of major litigation.

  .  Selection of independent auditors.

  .  All matters on which the Corporation Board of Directors has historically
     taken action other than (1) matters relating to the subject matters
     addressed in this Annex I and not requiring approval of the Board of
     Directors hereunder and (2) those matters delegated to the COO,
     including all of the COO Functions (as defined in Article XIII of this
     Restated Certificate of Incorporation).

                                      A-23
<PAGE>

                                                                         ANNEX C

                                  VIACOM INC.
                              AMENDED AND RESTATED

                                  BY-LAWS

                                   ARTICLE I

                                    Offices

   Section 1. The registered office shall be in the City of Wilmington, County
of New Castle, State of Delaware.

   Section 2. The Corporation may also have offices at such other places both
within and without the state of Delaware as the board of directors may from
time to time determine or the business of the Corporation may require.

                                   ARTICLE II

                            Meetings of Stockholders

   Section 1. Meetings of stockholders may be held at such time and place,
within or without the State of Delaware, as shall be stated in the notice of
the meeting or in a duly executed waiver of notice thereof. The annual meeting
of stockholders may be held at such place, within or without the State of
Delaware, as shall be designated by the board of directors and stated in the
notice of the meeting or in a duly executed waiver of notice thereof.

   Section 2. The annual meeting of stockholders for the purpose of electing
directors and for the transaction of such other business as may properly come
before the meeting shall be held at such date and hour as shall be determined
by the board of directors or, in the absence of such determination, on the
third Thursday of the ninth month after the month end most nearly coinciding
with the close of the fiscal year of the Corporation.

   Section 3. Written notice of the annual meeting stating the place, date and
hour of the meeting shall be given to each stockholder entitled to vote at such
meeting not less than ten nor more than sixty days before the date of the
meeting.

   Section 4. The officer who has charge of the stock ledger of the Corporation
shall prepare and make, at least ten days before every meeting of stockholders,
a complete list of the stockholders entitled to vote at the meeting, arranged
in alphabetical order and showing the address of each stockholder and the
number of shares registered in the name of each stockholder. Such list shall be
open to the examination of any stockholder, for any purpose germane to the
meeting, during ordinary business hours, for a period of at least ten days
prior to the meeting, either at a place within the city where the meeting is to
be held, which place shall be specified in the notice of the meeting, or, if
not so specified, at the place where the meeting is to be held. The list shall
also be produced and kept open at the time and place of the meeting during the
whole time thereof, and may be inspected by any stockholder who is present.

   Section 5. Special meetings of the stockholders, for any purpose or
purposes, unless otherwise prescribed by statute or by the Restated Certificate
of Incorporation, may be called by the affirmative vote of a majority of the
board of directors, the Chairman of the Board, the Chief Executive Officer, the
Vice Chairman of the Board or the President and Chief Operating Officer and
shall be called by the Chairman of the Board, the Chief Executive Officer, the
Vice Chairman of the Board, the President and Chief Operating Officer or
Secretary at the request in writing of the holders of record of at least 50.1%
of the aggregate voting power of

                                      C-1
<PAGE>

all outstanding shares of capital stock of the Corporation entitled to vote
generally in the election of Directors, acting together as a single class. Such
request shall state the purpose or purposes of the proposed meeting.

   Section 6. Written notice of a special meeting stating the place, date and
hour of the meeting and the purpose or purposes for which the meeting is
called, shall be given not less than ten nor more than sixty days before the
date of the meeting to each stockholder of record entitled to vote at such
meeting.

   Section 7. Business transacted at any special meeting of stockholders shall
be limited to the purposes stated in the notice.

   Section 8. The holders of a majority of the aggregate voting power of the
shares of the capital stock issued and outstanding and entitled to vote
thereat, present in person or represented by proxy, shall constitute a quorum
at all meetings of the stockholders for the transaction of business except as
otherwise provided by statute or by the Restated Certificate of Incorporation.
If, however, such quorum shall not be present or represented at any meeting of
the stockholders, the stockholders entitled to vote thereat, present in person
or represented by proxy, shall have the power to adjourn the meeting from time
to time, without notice other than announcement at the meeting, until a quorum
shall be present or represented. At such adjourned meeting at which a quorum
shall be present or represented, any business may be transacted which might
have been transacted at the meeting as originally notified. If the adjournment
is for more than thirty days, or if after the adjournment a new record date is
fixed for the adjourned meeting, a notice of the adjourned meeting shall be
given to each stockholder of record entitled to vote at the meeting.

   Section 9. When a quorum is present at any meeting, the vote of the holders
of a majority of the aggregate voting power of the shares of the capital stock
having voting power present in person or represented by proxy shall decide any
question brought before such meeting, unless the question is one upon which, by
provision of applicable law or of the Restated Certificate of Incorporation, a
different vote is required in which case such express provision shall govern
and control the decision of such question.

   Section 10. At every meeting of the stockholders, each stockholder shall be
entitled to vote, in person or by proxy executed in writing by the stockholder
or his duly authorized attorney-in-fact, each share of the capital stock having
voting power held by such stockholder in accordance with the provisions of the
Restated Certificate of Incorporation and, if applicable, the certificate of
designations relating thereto, but no proxy shall be voted or acted upon after
three years from its date, unless the proxy provides for a longer period.

   Section 11. Any action required to be taken at any annual or special meeting
of stockholders of the Corporation, or any action which may be taken at any
annual or special meeting of such stockholders, may be taken without a meeting,
without prior notice and without a vote, if a consent in writing, setting forth
the action so taken, shall be signed by stockholders representing not less than
the minimum number of votes that would be necessary to authorize or take such
actions at a meeting at which all shares entitled to vote thereon were present
and voted. Prompt notice of the taking of such action without a meeting by less
than unanimous written consent shall be given to those stockholders who have
not consented in writing. The Secretary shall file such consents with the
minutes of the meetings of the stockholders.

   Section 12. At all meetings of stockholders, the chairman of the meeting
shall have absolute authority over matters of procedure, and there shall be no
appeal from the ruling of the chairman.

   Section 13. Attendance of a stockholder, in person or by proxy, at any
meeting shall constitute a waiver of notice of such meeting, except where the
stockholder, in person or by proxy, attends a meeting for the express purpose
of objecting to the transaction of any business because the meeting is not
lawfully called or convened.


                                      C-2
<PAGE>

                                  ARTICLE III

                                   Directors

   Section 1. The number of directors which shall constitute the entire Board
of Directors shall be fixed as set forth in Article XIII of the Restated
Certificate of Incorporation, and shall not be less than three nor more than
eighteen. Directors shall have such qualifications as may be prescribed by
these by-laws. Directors need not be stockholders. If required by regulations
of the Federal Communications Commission, each director shall be a citizen of
the United States of America.

   Section 2. Subject to the rights of the holders of any series of Preferred
Stock or any other class of capital stock of the corporation then outstanding
(other than the Common Stock), and subject to Article XIII of the Restated
Certificate of Incorporation, vacancies in the board of directors for any
reason, including by reason of an increase in the authorized number of
directors, shall, if occurring prior to the expiration of the term of office in
which the vacancy occurs, be filled by a majority of the directors then in
office, though less than a quorum, or by a sole remaining director, and the
directors so chosen shall hold office until the next annual meeting of
stockholders of the Corporation or until their successors are duly elected and
shall qualify, unless sooner displaced. Subject to Article XIII of the Restated
Certificate of Incorporation, if there are no directors in office, then an
election of directors may be held in the manner provided by statute.

   Section 3. The property and business of the Corporation shall be controlled
and managed in accordance with the terms of the Restated Certificate of
Incorporation by its board of directors which may, subject to Article XIII of
the Restated Certificate of Incorporation, exercise all such powers of the
Corporation and do all such lawful acts and things as are not by statute or by
the Restated Certificate of Incorporation or by these by-laws directed or
required to be exercised or done by the stockholders.

                       MEETINGS OF THE BOARD OF DIRECTORS

   Section 4. The board of directors of the Corporation, or any committees
thereof, may hold meetings, both regular and special, either within or without
the State of Delaware.

   Section 5. A regular annual meeting of the board of directors, including
newly elected directors, shall be held immediately after each annual meeting of
stockholders at the place of such stockholders' meeting, and no notice of such
meeting to the directors shall be necessary in order legally to constitute the
meeting, provided a quorum shall be present. If such meeting is held at any
other time or place, notice thereof must be given or waived as hereinafter
provided for special meetings of the board of directors.

   Section 6. Additional regular meetings of the board of directors shall be
held on such dates and at such times and at such places as shall from time to
time be determined by the board of directors.

   Section 7. The Chairman of the Board, the Chief Executive Officer, Vice
Chairman of the Board or the President and Chief Operating Officer of the
Corporation and the Secretary may call a special meeting of the board of
directors at any time by giving notice, specifying the business to be
transacted at and the purpose or purposes of the meeting, to each member of the
board at least twenty-four (24) hours before the time appointed.

   Section 8. At all meetings of the board a majority of the full board of
directors shall constitute a quorum for the transaction of business and the act
of a majority of the directors present at any meeting at which there is a
quorum shall be the act of the board of directors, except as may be otherwise
specifically provided by statute, the Restated Certificate of Incorporation or
these by-laws. If a quorum shall not be present at any meeting of the board of
directors, the directors present thereat may adjourn the meeting from time to
time, without notice other than announcement at the meeting, until a quorum
shall be present.


                                      C-3
<PAGE>

   Section 9. Any action required or permitted to be taken at any meeting of
the board of directors or of any committee thereof may be taken without a
meeting if all members of the board or committee, as the case may be, consent
thereto in writing, setting forth the action so taken, and the writing or
writings are filed with the minutes of proceedings of the board or committee.

   Section 10. Unless otherwise restricted by the Restated Certificate of
Incorporation or these by-laws, members of the board of directors, or any
committee thereof, may participate in a meeting of the board of directors, or
any committee, by means of conference telephone or similar communications
equipment whereby all persons participating in the meeting can hear each other,
and such participation in a meeting shall constitute presence in person at the
meeting.

                            COMMITTEES OF DIRECTORS

   Section 11. Designation of Committees. Subject to Article XIII of the
Restated Certificate of Incorporation, the board of directors may, by
resolution passed by a majority of the whole board, designate one or more
committees, each committee to consist of one or more of the directors of the
Corporation. Subject to Article XIII of the Restated Certificate of
Incorporation, the board of directors may designate one or more directors as
alternate members of any committee, who may replace any absent or disqualified
member at any meeting of the committee.

   Section 12. Vacancies. Subject to Article XIII of the Restated Certificate
of Incorporation, in the absence or disqualification of a member of a
committee, the member or members thereof present at any meeting and not
disqualified from voting, whether or not he or they constitute a quorum, may
unanimously appoint another member of the board of directors to act at the
meeting in the place of any such absent or disqualified member.

   Section 13. Powers. Subject to Article XIII of the Restated Certificate of
Incorporation, any such committee, to the extent provided in the resolution of
the board of directors, shall have and may exercise all the powers and
authority of the board of directors to the extent provided by Section 141(c) of
the General Corporation Law of the State of Delaware as it exists now or may
hereafter be amended.

   Section 14. Each committee of the board of directors shall keep regular
minutes of its meetings and report the same to the board of directors when
required.

                           COMPENSATION OF DIRECTORS

   Subject to Article XIII of the Restated Certificate of Incorporation:

   Section 15. Unless otherwise restricted by the Restated Certificate of
Incorporation or these by-laws, the board of directors shall have the authority
to fix the compensation of directors. All directors may be paid their expenses,
if any, of attendance at each meeting of the board of directors, and directors
who are not full-time employees of the Corporation may be paid a fixed sum for
attendance at each meeting of the board of directors and/or a stated salary as
director. No such payment shall preclude any director from serving the
Corporation in any other capacity and receiving compensation therefor. Members
of special or standing committees may be allowed like compensation and expenses
for attending committee meetings.

                              REMOVAL OF DIRECTORS

   Subject to Article XIII of the Restated Certificate of Incorporation:

   Section 16. Subject to the rights of the holders of any series of Preferred
Stock or any other class of capital stock of the Corporation (other than the
Common Stock) then outstanding, (a) any director, or the entire

                                      C-4
<PAGE>

board of directors, may be removed from office at any time prior to the
expiration of his term of office, with or without cause, only by the
affirmative vote of the holders of record of outstanding shares representing at
least a majority of all of the aggregate voting power of outstanding shares of
capital stock of the Corporation then entitled to vote generally in the
election of directors, voting together as a single class at a special meeting
of stockholders called expressly for that purpose; provided that, any director
may be removed from office by the affirmative vote of a majority of the entire
board of directors, at any time prior to the expiration of his term of office,
as provided by law, in the event a director fails to meet the qualifications
stated in these by-laws for election as a director or in the event such
director is in breach of any agreement between such director and the
Corporation relating to such director's service as a director or employee of
the Corporation.

                          INDEMNIFICATION OF DIRECTORS

   Section 17. The Corporation shall have the right to indemnify directors,
officers and agents of the Corporation to the fullest extent permitted by the
General Corporation Law of Delaware and by the Restated Certificate of
Incorporation, as both may be amended from time to time.

                                   ARTICLE IV

                                    Notices

   Section 1. Whenever, under the provisions of applicable law or of the
Restated Certificate of Incorporation or of these by-laws, notice is required
to be given to any director or stockholder, it shall be construed to mean
written or printed notice given either personally or by mail or wire addressed
to such director or stockholder, at his address as it appears on the records of
the Corporation, with postage or other charges thereon prepaid, and such notice
shall be deemed to be given at the time when the same shall be deposited in the
United States mail or at the appropriate office for transmission by wire.
Notice to directors may also be given by telephone.

   Section 2. Whenever any notice is required to be given under the provisions
of applicable law or of the Restated Certificate of Incorporation or of these
by-laws, a waiver thereof in writing, signed by the person or persons entitled
to said notice, whether before or after the time stated therein, shall be
deemed equivalent thereto.

   Section 3. Attendance at a meeting shall constitute a waiver of notice
except where a director or shareholder attends a meeting for the express
purpose of objecting to the transaction of any business because the meeting is
not lawfully called or convened.

   Section 4. Neither the business to be transacted at, nor the purpose of, any
regular meeting of the board of directors need be specified in the notice or
waiver of notice of such meeting.

                                   ARTICLE V

                                    Officers

   Subject to Article XIII of the Restated Certificate of Incorporation:

   Section 1. The officers of the Corporation shall be elected by the board of
directors at its first meeting after each annual meeting of the stockholders
and shall be a President and Chief Operating Officer, a Treasurer and a
Secretary. The board of directors may also elect a Chairman of the Board, a
Chief Executive Officer, one or more Vice Chairmen of the Board and Vice
Presidents and one or more Assistant Treasurers and Assistant Secretaries. Any
number of offices may be held by the same person, except that the offices of
President and Chief Operating Officer and Secretary shall not be held by the
same person. Vice Presidents may be given distinctive designations such as
Executive Vice President or Senior Vice President. Every officer shall be a
citizen of the United States of America.

                                      C-5
<PAGE>

   Section 2. The board of directors may elect such other officers and agents
as it shall deem necessary who shall hold their offices for such terms and
shall exercise such powers and perform such duties as shall be determined from
time to time by the board of directors.

   Section 3. The officers of the Corporation shall hold office until their
successors are elected or appointed and qualify or until their earlier
resignation or removal. Any officer elected or appointed by the board of
directors may be removed at any time with or without cause by the affirmative
vote of a majority of the whole board of directors. Any vacancy occurring in
any office of the Corporation shall be filled by the board of directors.

                             CHAIRMAN OF THE BOARD

   Section 4. The Chairman of the Board, if any shall be elected, shall preside
at all meetings of the board of directors and the stockholders and shall have
such other powers and perform such other duties as may from time to time be
assigned to him by the board of directors.

                           VICE CHAIRMAN OF THE BOARD

   Section 5. The Vice Chairman of the Board, if any shall be elected, or if
there be more than one, the Vice Chairmen of the Board in order of their
election, shall, in the absence of the Chairman of the Board, or in the case
the Chairman of the Board shall resign, retire, become deceased or otherwise
cease or be unable to act, perform the duties and exercise the powers of the
Chairman of the Board. In addition, the Vice Chairman of the Board shall have
such other powers and perform such other duties as may from time to time be
assigned to him by the board of directors.

                          THE CHIEF EXECUTIVE OFFICER

   Section 6. The Chief Executive Officer shall be responsible, in consultation
with the President and Chief Operating Officer, for corporate policy and
strategy. The President and Chief Operating Officer shall consult on all major
decisions with, and shall report directly to, the Chief Executive Officer;
provided, however, that the Chief Executive Officer shall not exercise any
powers, rights, functions or responsibilities of the President and Chief
Operating Officer unless Mel Karmazin is the Chief Executive Officer.

                   THE PRESIDENT AND CHIEF OPERATING OFFICER

   Section 7. Subject to Article XIII of the Restated Certificate of
Incorporation and to the requirement that the President and Chief Operating
Officer consult with the Chief Executive Officer on all major decisions, the
President and Chief Operating Officer shall be responsible for:

     (i) supervising, coordinating and managing the Corporation's business,
  operations and activities, operating expenses and capital allocation;

     (ii) matters relating to officers (other than the Chairman, the Chief
  Executive Officer and the President and Chief Operating Officer) and
  employees, including, without limitation, hiring, terminating, changing
  positions and allocation of responsibilities of such officers and
  employees;

     (iii) substantially all of the powers, rights, functions and
  responsibilities typically exercised by a chief operating officer; and

     (iv) all officers (other than the Chairman, the Chief Executive Officer
  and the President and Chief Operating Officer) will report, directly or
  indirectly, to the President and Chief Operating Officer.


                                      C-6
<PAGE>

                              THE VICE-PRESIDENTS

   Section 8. The Vice-Presidents shall have such powers and perform such
duties as may from time to time be assigned to them by the board of directors
or the President and Chief Operating Officer.

                     THE SECRETARY AND ASSISTANT SECRETARY

   Section 9. The Secretary shall attend all meetings of the board of directors
and all meetings of the stockholders and record all the proceedings of the
meetings of the Corporation and of the board of directors in a book to be kept
for that purpose and shall perform like duties for the standing committees of
the board of directors when required. He shall give, or cause to be given,
notice of all meetings of the stockholders and special meetings of the board of
directors, and shall perform such other duties as may be prescribed by the
board of directors or the President and Chief Operating Officer, under whose
supervision he shall be. He shall have custody of the corporate seal of the
Corporation and he, or an Assistant Secretary, shall have authority to affix
the same to any instrument requiring it and when so affixed, it may be attested
by his signature or by the signature of such Assistant Secretary. The board of
directors may give general authority to any other officer to affix the seal of
the Corporation and to attest the affixing by his signature.

   Section 10. The Assistant Secretary, if any shall be elected, or if there be
more than one, the Assistant Secretaries in the order determined by the board
of directors (or if there be no such determination, then in the order of their
election), shall, in the absence of the Secretary or in the event of his
inability or refusal to act, perform the duties and exercise the powers of the
Secretary and shall have such other powers and perform such other duties as may
from time to time be assigned to them by the board of directors or the
President and Chief Operating Officer.

                     THE TREASURER AND ASSISTANT TREASURERS

   Section 11. The Treasurer, under the supervision of the President and Chief
Operating Officer, shall have charge of the corporate funds and securities and
shall keep or cause to be kept full and accurate accounts of receipts and
disbursements in books belonging to the Corporation and shall deposit all
moneys and other valuable effects in the name and to the credit of the
Corporation in such depositaries as may be designated by or at the direction of
the board of directors.

   Section 12. The Treasurer shall disburse or cause to be disbursed the funds
of the Corporation as may be ordered by or at the direction of the President
and Chief Operating Officer or the board of directors, taking proper vouchers
for such disbursements, and subject to the supervision of the President and
Chief Operating Officer, shall render to the board of directors, when they or
either of them so require, an account of his transactions as Treasurer and of
the financial condition of the Corporation.

   Section 13. If required by the board of directors, the Treasurer shall give
the Corporation a bond in such sum and with such surety or sureties as shall be
satisfactory to the board of directors for the faithful performance of the
duties of his office and for the restoration to the Corporation, in case of his
death, resignation, retirement or removal from office, of all books, papers,
vouchers, money and other property of whatever kind in his possession or under
his control belonging to the Corporation.

   Section 14. The Assistant Treasurer, if any shall be elected, or if there
shall be more than one, the Assistant Treasurers in the order determined by the
board of directors (or if there be no such determination, then in the order of
their election), shall, in the absence of the Treasurer or in the event of his
inability or refusal to act, perform the duties and exercise the powers of the
Treasurer and shall have such other powers and perform such other duties as may
from time to time be assigned to them by the board of directors.

                                      C-7
<PAGE>

   Section 15. In addition to the corporate officers elected by the board of
directors pursuant to this Article V, the President and Chief Operating Officer
may, from time to time, appoint one or more other persons as appointed officers
who shall not be deemed to be corporate officers, but may, respectively, be
designated with such titles as the President and Chief Operating Officer may
deem appropriate. The President and Chief Operating Officer may prescribe the
powers to be exercised and the duties to be performed by each such appointed
officer, may designate the term for which each such appointment is made, and
may, from time to time, terminate any or all of such appointments. Such
appointments and termination of appointments shall be reported to the board of
directors.

                                   ARTICLE VI

                             Certificates of Stock

   Section 1. Every holder of shares of capital stock in the Corporation shall
be entitled to have a certificate sealed with the seal of the Corporation and
signed by, or in the name of the Corporation by, the Chairman of the Board, the
Chief Executive Officer, Vice Chairman of the Board or the President and Chief
Operating Officer and by the Treasurer or an Assistant Treasurer or the
Secretary or an Assistant Secretary of the Corporation, certifying the number
of shares owned by him in the Corporation. If the Corporation shall be
authorized to issue more than one class of stock or more than one series of any
class, the designations, preferences and relative, participating, optional or
other special rights of each class of stock or series thereof and the
qualifications, limitations or restrictions of such preferences and/or rights
shall be set forth in full or summarized on the face or back of the certificate
which the Corporation shall issue to represent such class or series of stock,
provided that, except as otherwise provided in section 202 of the General
Corporation Law of Delaware, in lieu of the foregoing requirements, there may
be set forth on the face or back of the certificate which the Corporation shall
issue to represent such class or series of stock, a statement that the
Corporation will furnish without charge to each stockholder who so requests the
designations, preferences and relative, participating, optional or other
special rights of each class of stock or series thereof and the qualifications,
limitations or restrictions of such preferences and/or rights.

   Section 2. Any or all of the signatures on the certificate may be facsimile.
In case any officer, transfer agent or registrar who has signed or whose
facsimile signature has been placed upon a certificate shall have ceased to be
such officer, transfer agent or registrar before such certificate is issued, it
may be issued by the Corporation with the same effect as if he were such
officer, transfer agent or registrar at the date of issue.

                               LOST CERTIFICATES

   Section 3. The board of directors may direct a new certificate or
certificates to be issued in place of any certificate or certificates
theretofore issued by the Corporation alleged to have been lost, stolen or
destroyed, upon the making of an affidavit of that fact by the person claiming
the certificate of capital stock to be lost, stolen or destroyed. When
authorizing such issue of a new certificate or certificates, the board of
directors may, in its discretion and as a condition precedent to the issuance
thereof, require the owner of such lost, stolen or destroyed certificate or
certificates, or his legal representative, to advertise the same in such manner
as it shall require and/or to give the Corporation a bond in such sum as it may
direct as indemnity against any claim that may be made against the Corporation
with respect to the certificate alleged to have been lost, stolen or destroyed.

                               TRANSFERS OF STOCK

   Section 4. Upon surrender to the Corporation or the transfer agent of the
Corporation of a certificate for shares duly endorsed or accompanied by proper
evidence of succession, assignation or authority to transfer, it shall be the
duty of the Corporation to issue a new certificate to the person entitled
thereto, cancel the old certificate and record the transaction upon its books.

                                      C-8
<PAGE>

                               FIXING RECORD DATE

   Section 5. In order that the Corporation may determine the stockholders
entitled to notice of or to vote at any meeting of stockholders or any
adjournment thereof, or to express consent to corporate action in writing
without a meeting, or entitled to receive payment of any dividend or other
distribution, or allotment of any rights, or entitled to exercise any rights in
respect of any change, conversion or exchange of stock or for the purpose of
any other lawful action, the board of directors may fix, in advance, a record
date, which shall not be more than sixty nor less than ten days before the date
of such meetings, nor more than sixty days prior to any other action. A
determination of stockholders of record entitled to notice of or to vote at a
meeting of stockholders shall apply to any adjournment of the meeting;
provided, however, that the board of directors may fix a new record date for
the adjourned meeting.

                            REGISTERED STOCKHOLDERS

   Section 6. The Corporation shall be entitled to recognize the exclusive
right of a person registered on its books as the owner of shares to receive
dividends, and to vote as such owner, and to hold liable for calls and
assessments a person registered on its books as the owner of shares, and shall
not be bound to recognize any equitable or other claim to or interest in such
share or shares on the part of any other person, whether or not it shall have
express or other notice thereof, except as otherwise provided by the laws of
Delaware.

                                  ARTICLE VII

                               General Provisions
                                   Dividends

   Section 1. Dividends upon the capital stock of the Corporation, subject to
the provisions of the certificate of incorporation, if any, may be declared by
the board of directors at any regular or special meeting, pursuant to law.
Dividends may be paid in cash, in property or in shares of the capital stock,
subject to the provisions of any statute, the Restated Certificate of
Incorporation and these by-laws.

   Section 2. Before payment of any dividend, there may be set aside out of any
funds of the Corporation available for dividends such sum or sums as the
directors from time to time, in their absolute discretion, think proper as a
reserve or reserves to meet contingencies, or for equalizing dividends, or for
repairing or maintaining any property of the Corporation, or for such other
purposes as the directors shall think conducive to the interest of the
Corporation, and the directors may modify or abolish any such reserve in the
manner in which it was created.

                                ANNUAL STATEMENT

   Section 3. The board of directors shall present at each annual meeting, and
at any special meeting of the stockholders when called for by vote of the
stockholders, a full and clear statement of the business and condition of the
Corporation.

                                     CHECKS

   Section 4. All checks or demands for money of the Corporation shall be
signed by such officer or officers or such other person or persons as the board
of directors may from time to time designate.

                                      C-9
<PAGE>

                                  FISCAL YEAR

   Section 5. The fiscal year of the Corporation shall be as specified by the
board of directors.

                                      SEAL

   Section 6. The corporate seal shall have inscribed thereon the name of the
Corporation, the year of its organization and the words "Corporate Seal,
Delaware". The seal may be used by causing it or a facsimile thereof to be
impressed or affixed or reproduced or otherwise.

                                   CONTRACTS

   Section 7. An Officer of the Corporation may sign any note, bond, or
mortgage of the Corporation in furtherance of the Corporation's ordinary
business and in order to implement any action authorized by these by-laws.

                                  ARTICLE VIII

                     Restated Certificate of Incorporation

   In addition to all other provisions of the Restated Certificate of
Incorporation, and notwithstanding that these by-laws may contain any provision
contrary thereto, these by-laws shall be subject in all respects to Article
XIII of the Restated Certificate of Incorporation.

                                   ARTICLE IX

                                   Amendments

   In furtherance of and not in limitation of the powers conferred by statute,
the board of directors of the Corporation from time to time may make, amend,
alter, change or repeal the by-laws of the Corporation; provided, that any by-
laws made, amended, altered, changed or repealed by the board of directors or
the stockholders of the Corporation may be amended, altered, changed or
repealed, and that any by-laws may be made, by the stockholders of the
Corporation. Notwithstanding any other provisions of the Restated Certificate
of Incorporation of the Corporation or these by-laws (and notwithstanding the
fact that a lesser percentage may be specified by law, the Restated Certificate
of Incorporation or these by-laws), the affirmative vote of not less than a
majority of the aggregate voting power of all outstanding shares of capital
stock of the Corporation then entitled to vote generally in this election of
Directors, voting together as a single class, shall be required for the
stockholders of the Corporation to amend, alter, change, repeal or adopt any
by-laws of the Corporation.

                                      C-10
<PAGE>

                                                                         ANNEX D




                                VOTING AGREEMENT

                                       By

                           NATIONAL AMUSEMENTS, INC.
                                 (Stockholder)

                                      and

                                CBS CORPORATION

                         Dated as of September 6, 1999


                                      D-1
<PAGE>

                                VOTING AGREEMENT

   VOTING AGREEMENT, dated as of September 6, 1999 (this "Agreement"), by
NATIONAL AMUSEMENTS, INC., a Maryland corporation (the "Stockholder"), to and
for the benefit of CBS CORPORATION, a Pennsylvania corporation ("CBS").

   WHEREAS, as of the date hereof, the Stockholder owns of record and
beneficially 93,658,988 shares of Class A Common Stock (the "Viacom Class A
Common Stock"; such shares, together with any shares of Viacom Class A Common
Stock and any other shares of voting stock of Viacom acquired by the
Stockholder prior to the termination of this Agreement being referred to herein
as the "Stockholder's Shares"), par value $.01 per share, of VIACOM, INC., a
Delaware corporation ("Viacom");

   WHEREAS, concurrently with the execution of this Agreement, CBS and Viacom
are entering into an Agreement and Plan of Merger, dated as of the date hereof
(the "Merger Agreement"; capitalized terms used and not otherwise defined
herein shall have the respective meanings assigned to them in the Merger
Agreement), pursuant to which, upon the terms and subject to the conditions
thereof, CBS will be merged with and into Viacom (the "Merger"); and

   WHEREAS, as a condition to the willingness of Viacom and CBS to enter into
the Merger Agreement, CBS has requested the Stockholder to agree, and in order
to induce CBS to enter into the Merger Agreement, the Stockholder is willing to
agree, to vote in favor of the Viacom Proposals (as defined in the Merger
Agreement), upon the terms and subject to the conditions set forth herein.

   NOW, THEREFORE, in consideration of the foregoing and the mutual covenants
and agreements contained herein, and intending to be legally bound hereby, the
parties hereby agree as follows:

   Section 1. Voting of Stockholder's Shares. Until the termination of this
Agreement in accordance with the terms hereof, the Stockholder hereby agrees
that, at the Viacom Stockholders' Meeting or any other meeting of the
stockholders of Viacom, however called, and in any action by written consent of
the stockholders of Viacom, the Stockholder will vote all of the Stockholder's
Shares (i) in favor of the Viacom Proposals and (ii) against any action,
proposal or agreement that would or could reasonably be expected to result in a
breach of any covenant, representation or warranty or any other obligation or
agreement of Viacom under the Merger Agreement or which would or could
reasonably be expected to result in any of the conditions to the Merger
Agreement not being fulfilled.

   Section 2. No Inconsistent Agreements. The Stockholder hereby covenants and
agrees that, except as contemplated by this Agreement and the Merger Agreement,
the Stockholder shall not enter into any voting agreement or grant a proxy or
power of attorney with respect to the Stockholder's Shares which is
inconsistent with this Agreement.

   Section 3. Transfer of Stockholder's Shares. The Stockholder hereby
covenants and agrees that the Stockholder shall not transfer record or
beneficial ownership of any of the Stockholder's Shares unless the transferee
unconditionally agrees in writing to be bound by the terms and conditions of
this Agreement.

   Section 4. Representations and Warranties of Stockholder. The Stockholder
hereby represents and warrants to CBS as follows:

     (a) Authority Relative to This Agreement. The Stockholder has all
  necessary power and authority to execute and deliver this Agreement, to
  perform its obligations hereunder and to consummate the transactions
  contemplated hereby. The execution and delivery of this Agreement by the
  Stockholder and the consummation by the Stockholder of the transactions
  contemplated hereby have been duly and validly authorized by the Board of
  Directors of the Stockholder, and no other corporate proceedings on the
  part of the Stockholder are necessary to authorize this Agreement or to
  consummate such transactions. This Agreement has been duly and validly
  executed and delivered by the Stockholder and, assuming the due

                                      D-2
<PAGE>

  authorization, execution and delivery by CBS, constitutes a legal, valid
  and binding obligation of the Stockholder, enforceable against the
  Stockholder in accordance with its terms.

     (b) No Conflict. (i) The execution and delivery of this Agreement by the
  Stockholder do not, and the performance of this Agreement by the
  Stockholder shall not, (A) conflict with or violate the Certificate of
  Incorporation or By-laws or equivalent organizational documents of the
  Stockholder, (B) conflict with or violate any law, rule, regulation, order,
  judgment or decree applicable to the Stockholder or by which the
  Stockholder's Shares are bound or affected or (C) result in any breach of
  or constitute a default (or an event that with notice or lapse of time or
  both would become a default) under, or give to others any rights of
  termination, amendment, acceleration or cancellation of, or result in the
  creation of a lien or encumbrance on any of the Stockholder's Shares
  pursuant to, any note, bond, mortgage, indenture, contract, agreement,
  lease, license, permit, franchise or other instrument or obligation to
  which the Stockholder is a party or by which the Stockholder or the
  Stockholder's Shares are bound or affected, except, in the case of clauses
  (B) and (C), for any such conflicts, violations, breaches, defaults or
  other occurrences which would not prevent or delay the performance by the
  Stockholder of its obligations under this Agreement.

     (ii) The execution and delivery of this Agreement by the Stockholder do
  not, and the performance of this Agreement by the Stockholder shall not,
  require any consent, approval, authorization or permit of, or filing with
  or notification to, any Governmental Entity except for applicable
  requirements, if any, of the Securities Exchange Act of 1934, as amended,
  and except where the failure to obtain such consents, approvals,
  authorizations or permits, or to make such filings or notifications, would
  not prevent or delay the performance by the Stockholder of its obligations
  under this Agreement.

     (c) Title to the Shares. As of the date hereof, the Stockholder is the
  record and beneficial owner of 93,658,988 shares of Viacom Class A Common
  Stock. The Stockholder's Shares are all the voting securities of Viacom
  owned, either of record or beneficially, by the Stockholder. The
  Stockholder's Shares are owned free and clear of all security interests,
  liens, claims, pledges, options, rights of first refusal, agreements,
  limitations on the Stockholder's voting rights, charges and other
  encumbrances of any nature whatsoever. The Stockholder has not appointed or
  granted any proxy, which appointment or grant is still effective, with
  respect to the Stockholder's Shares.

   Section 5. Termination. This Agreement shall terminate upon the earlier to
occur of (a) the Effective Time and (b) the termination of the Merger Agreement
in accordance with the terms thereof. No such termination of this Agreement
shall relieve any party hereto from any liability for any breach of this
Agreement prior to termination.

   Section 6. Notices. All notices, requests, claims, demands and other
communications hereunder shall be in writing and shall be given or made (and
shall be deemed to have been duly given or made upon receipt) by delivery in
person, by facsimile, by courier service or by registered or certified mail
(postage prepaid, return receipt requested) to the respective parties at the
following addresses (or at such other address for a party as shall be specified
in a notice given in accordance with this Section 6):

         if to the Stockholder:

                 National Amusements, Inc.
                 200 Elm Street
                 Dedham, Massachusetts 02026
                 Telecopier No.: (781) 461-1412
                 Attention: General Counsel

                                      D-3
<PAGE>

         with a copy to:

                 Shearman & Sterling
                 599 Lexington Avenue
                 New York, New York 10022
                 Telecopier No.: (212) 848-7179
                 Attention: Creighton O'M. Condon, Esq. and
                          Stephen R. Volk, Esq.

         if to CBS:

                 CBS Corporation
                 51 West 52nd Street
                 35th Floor
                 New York, New York 10019
                 Telecopier No.: (212) 597-4031
                 Attention: Louis J. Briskman, Esq.
                          Executive Vice President and
                          General Counsel

         with copies to:

                 Cravath, Swaine & Moore
                 825 Eighth Avenue
                 New York, New York 10019
                 Telecopier No.: (212) 474-3700
                 Attention: Allen Finkelson, Esq. and
                          Scott A. Barshay, Esq.

   Section 7. Severability. If any term or other provision of this Agreement is
invalid, illegal or incapable of being enforced by any rule of Law, or public
policy, all other conditions and provisions of this Agreement shall
nevertheless remain in full force and effect so long as the economic or legal
substance of this Agreement is not affected in any manner materially adverse to
any party. Upon such determination that any term or other provision is invalid,
illegal or incapable of being enforced, the parties hereto shall negotiate in
good faith to modify this Agreement so as to effect the original intent of the
parties as closely as possible in a mutually acceptable manner in order that
the transactions contemplated by this Agreement be consummated as originally
contemplated to the fullest extent possible.

   Section 8. Entire Agreement; Assignment. This Agreement and the Merger
Agreement constitute the entire agreement among the parties with respect to the
subject matter hereof and supersede all prior agreements and undertakings, both
written and oral, among the parties, or any of them, with respect to the
subject matter hereof. Neither this Agreement nor any of the rights, interests
or obligations under this Agreement shall be assigned, in whole or in part, by
operation of law or otherwise, by either of the parties hereto without the
prior written consent of the other party hereto. Any purported assignment in
violation of this Section 8 shall be void. Subject to the preceding sentences
of this Section 8, this Agreement will be binding upon, inure to the benefit
of, and be enforceable by, the parties hereto and their respective successors
and assigns.

   Section 9. Parties in Interest; Certain Events. This Agreement shall be
binding upon and inure solely to the benefit of each party hereto, and nothing
in this Agreement, express or implied, is intended to or shall confer upon any
other person any right, benefit or remedy of any nature whatsoever under or by
reason of this Agreement. The Stockholder agrees that this Agreement and the
obligations hereunder shall attach to the Stockholder's Shares and shall be
binding upon any person or entity to which legal or beneficial ownership of the
Stockholder's Shares shall pass, whether by operation of law or otherwise. In
the event of any stock split, stock dividend, merger, reorganization,
recapitalization or other change in the capital structure of Viacom

                                      D-4
<PAGE>

affecting the capital stock of Viacom, or the acquisition of additional shares
of Viacom Class A Common Stock or other voting securities of Viacom by the
Stockholder, the number of Stockholder's Shares shall be adjusted appropriately
and this Agreement and the obligations hereunder shall attach to any additional
shares of Viacom Class A Common Stock or other voting securities of Viacom
issued to or acquired by the Stockholder.

   Section 10. Specific Performance. The parties hereto agree that irreparable
damage would occur in the event any provision of this Agreement was not
performed in accordance with the terms hereof and that the parties shall be
entitled to specific performance of the terms hereof, in addition to any other
remedy at law or equity.

   Section 11. Governing Law. This Agreement shall be governed by and construed
in accordance with the laws of the State of Delaware, without regard to any
principles of conflicts of laws of such State.

   Section 12. Consent to Jurisdiction. (a) Each of the Stockholder and CBS
hereby irrevocably submits to the exclusive jurisdiction of the courts of the
State of Delaware and to the jurisdiction of the United States District Court
for the State of Delaware, for the purpose of any action or proceeding arising
out of or relating to this Agreement and each of CBS and the Stockholder hereby
irrevocably agrees that all claims in respect to such action or proceeding
shall be heard and determined exclusively in any Delaware state or federal
court. Each of CBS and the Stockholder agrees that a final judgment in any
action or proceeding shall be conclusive and may be enforced in other
jurisdictions by suit on the judgment or in any other manner provided by law.

   (b) Each of CBS and the Stockholder irrevocably consents to the service of
the summons and complaint and any other process in any other action or
proceeding relating to the transactions contemplated by this Agreement, on
behalf of itself or its property, by personal delivery of copies of such
process to such party. Nothing in this Section 12 shall affect the right of any
party to serve legal process in any other manner permitted by law.

   Section 13. Headings. The descriptive headings contained in this Agreement
are included for convenience of reference only and shall not affect in any way
the meaning or interpretation of this Agreement.

   Section 14. Amendments. This Agreement may be amended or modified, and the
terms and conditions hereof may be waived, only by a written instrument signed
by the parties hereto or, in the case of a waiver, by each party waiving
compliance.

   Section 15. Counterparts. This Agreement may be executed and delivered
(including by facsimile transmission) in one or more counterparts, and by the
different parties hereto in separate counterparts, each of which when executed
and delivered shall be deemed to be an original but all of which taken together
shall constitute one and the same agreement.

   Section 16. WAIVER OF JURY TRIAL. EACH OF CBS AND THE STOCKHOLDER HEREBY
IRREVOCABLY WAIVES ALL RIGHT TO TRIAL BY JURY IN ANY ACTION, PROCEEDING OR
COUNTERCLAIM (WHETHER BASED ON CONTRACT, TORT OR OTHERWISE) ARISING OUT OF OR
RELATING TO THIS AGREEMENT OR THE ACTIONS OF CBS AND THE STOCKHOLDER IN THE
NEGOTIATION, ADMINISTRATION, PERFORMANCE AND ENFORCEMENT THEREOF.

                                      D-5
<PAGE>

   IN WITNESS WHEREOF, each of the parties hereto has caused this Agreement to
be executed as of the date first written above by their respective officers
thereunto duly authorized.

                                          National Amusements, Inc.

                                                  /s/ Sumner M. Redstone
                                          By___________________________________
                                            Name: Sumner M. Redstone
                                            Title: Chairman, President
                                                  & Chief Executive Officer

                                          CBS Corporation

                                                  /s/ Fredric G. Reynolds
                                          By___________________________________
                                            Name: Fredric G. Reynolds
                                            Title: Executive Vice President,
                                                  Chief Financial Officer

                                      D-6
<PAGE>

                                                                         ANNEX E



                             STOCKHOLDER AGREEMENT

                                       By

                           NATIONAL AMUSEMENTS, INC.
                                 (Stockholder)

                                      and

                                CBS CORPORATION

                         Dated as of September 6, 1999

                                      E-1
<PAGE>

                             STOCKHOLDER AGREEMENT

   STOCKHOLDER AGREEMENT, dated as of September 6, 1999 (this "Agreement"), by
NATIONAL AMUSEMENTS, INC., a Maryland corporation (the "Stockholder"), to and
for the benefit of CBS CORPORATION, a Pennsylvania corporation ("CBS"), and its
assigns by operation of law.

   WHEREAS, as of the date hereof, the Stockholder owns of record and
beneficially 93,658,988 shares of Class A Common Stock (the "Viacom Class A
Common Stock"; such shares, together with any shares of Viacom Class A Common
Stock and any other shares of voting stock of Viacom (together with the Viacom
Class A Common Stock, the "Voting Stock") acquired by the Stockholder during
the Specified Period (as defined in Section 1 of this Agreement) being
collectively referred to herein as the "Stockholder's Shares"), par value $.01
per share, of VIACOM INC., a Delaware corporation ("Viacom");

   WHEREAS, concurrently with the execution of this Agreement, CBS and Viacom
are entering into an Agreement and Plan of Merger, dated as of the date hereof
(the "Merger Agreement"; capitalized terms used and not otherwise defined
herein shall have the respective meanings assigned to them in the Merger
Agreement), pursuant to which, upon the terms and subject to the conditions
thereof, CBS will be merged with and into Viacom (the "Merger"); and

   WHEREAS, as a condition to the willingness of Viacom and CBS to enter into
the Merger Agreement, CBS has requested the Stockholder to enter into this
Agreement.

   NOW, THEREFORE, in consideration of the foregoing and the mutual covenants
and agreements contained herein, and intending to be legally bound hereby, the
parties hereby agree as follows:

   Section 1. Definitions. As used in this Agreement, the following terms shall
have the following meanings:

     (a) "CBS Directors" shall mean (i) eight (8) of those directors serving
  as members of the Board of Directors of CBS on the date of this Agreement
  (or any Independent Directors elected or appointed prior to the Effective
  Time to serve as a CBS Director) who are designated as such by the Board of
  Directors of CBS prior to the Effective Time and (ii) any Replacement CBS
  Director.

     (b) "Independent Director" shall mean a disinterested, independent
  person (determined in accordance with customary standards for independent
  directors applicable to U.S. public companies).

     (c) "Replacement CBS Director" shall mean a person qualifying as an
  Independent Director and designated by a majority of the CBS Directors
  remaining on the Board of Directors of Viacom to fill a seat on the Board
  of Directors of Viacom vacated by a CBS Director or such a seat with
  respect to which a CBS Director does not seek reelection.

     (d) "Specified Independent Directors" shall mean the directors of Viacom
  first elected after 1993 and who are not management of Viacom or the
  Stockholder (together with any replacements of such persons).

     (e) "Specified Period" shall mean the period of three years commencing
  at the Effective Time.

   Section 2. Covenants of the Stockholder.

     (a) The Stockholder shall cause to be nominated and elected each CBS
  Director, including any Replacement CBS Director, so that there are eight
  CBS Directors on the Board of Directors of Viacom at all times;

     (b) the Stockholder shall take all action necessary to ensure that any
  seat on the Board of Directors of Viacom vacated by a CBS Director or such
  a seat with respect to which a CBS Director elects not to seek reelection
  is filled by a Replacement CBS Director immediately following the
  designation of such person as such and notice thereof to the Stockholder;

                                      E-2
<PAGE>

     (c) the Stockholder shall take all action necessary to ensure that no
  CBS Director is removed as a director of Viacom unless such removal is for
  cause and is approved by at least 14 members of the Board of Directors of
  Viacom;

     (d) in the event that any Specified Independent Director shall resign,
  vacate his directorship, fail to stand as a director, fail to be elected as
  a director, or otherwise be removed as or for any reason cease to be a
  director of Viacom, the Stockholder shall take all necessary action to
  cause such Specified Independent Director to be replaced by an Independent
  Director; provided that any such replacement Specified Independent Director
  shall be the chief executive officer, chief operating officer or chief
  financial officer or former chief executive officer of a Fortune 500
  company or a non-U.S. public company of comparable size;

     (e) unless approved by a vote of at least 14 members of the Board of
  Directors of Viacom, the Stockholder shall not take any action to amend,
  modify or repeal Article XIII of the Restated Certificate of Incorporation
  of Viacom (in the form attached as Exhibit A-1 of the Merger Agreement) or
  Article VIII of the By-laws of Viacom (in the form attached as Exhibit A-2
  of the Merger Agreement), or otherwise vote in favor of or take any action
  or fail to take any action which would have the effect of eliminating,
  limiting, restricting, avoiding or otherwise modifying the effect of any
  provision contained therein (e.g., by creating a holding company structure
  if the certificate of incorporation or similar document of such holding
  company does not contain equivalent provisions). Without limiting the
  generality of the foregoing, the Stockholder further agrees to take all
  necessary action to ensure that such provisions shall be applicable to (i)
  any successor to Viacom as the result of a merger, consolidation or other
  business combination, whether or not Viacom is the surviving corporation in
  such transaction, or otherwise and (ii) any corporation or other entity
  with respect to which Viacom or its successor is or becomes a direct or
  indirect subsidiary, and the Stockholder shall take all necessary action to
  ensure that Viacom shall not be a party to any transaction which would not
  comply with the provisions of this paragraph (e) unless such transaction is
  approved by a vote of at least 14 members of the Board of Directors of
  Viacom;

     (f) the Stockholder shall take all necessary action, including without
  limitation by voting and/or holding the Stockholder's Shares, to ensure
  that the Stockholder or transferees thereof (in accordance with Section 4
  of this Agreement) owns, beneficially and of record, on an outstanding and
  fully diluted basis, a majority of the shares of Voting Stock, at all times
  (and refrain from taking any action that would have the opposite result);
  and

     (g) each of the CBS Directors are intended third-party beneficiaries of
  this Agreement and shall have the right to enforce the provisions of this
  Agreement.

   Section 3. No Inconsistent Agreements. The Stockholder hereby covenants and
agrees that the Stockholder shall not enter into any voting agreement or grant
a proxy or power of attorney with respect to the Stockholder's Shares which is
inconsistent with this Agreement.

   Section 4. Transfer of Stockholder's Shares. The Stockholder hereby
covenants and agrees that the Stockholder shall not transfer record or
beneficial ownership of any of the Stockholder's Shares unless the transferee
unconditionally agrees in writing to be bound by the terms and conditions of
this Agreement.

   Section 5. Representations and Warranties of Stockholder. The Stockholder
hereby represents and warrants to CBS as follows:

     (a) Authority Relative to This Agreement. The Stockholder has all
  necessary power and authority to execute and deliver this Agreement, to
  perform its obligations hereunder and to consummate the transactions
  contemplated hereby. The execution and delivery of this Agreement by the
  Stockholder and the consummation by the Stockholder of the transactions
  contemplated hereby have been duly and validly authorized by the Board of
  Directors of the Stockholder, and no other corporate proceedings on the
  part of the Stockholder are necessary to authorize this Agreement or to
  consummate such transactions. This

                                      E-3
<PAGE>

  Agreement has been duly and validly executed and delivered by the
  Stockholder and, assuming the due authorization, execution and delivery by
  CBS, constitutes a legal, valid and binding obligation of the Stockholder,
  enforceable against the Stockholder in accordance with its terms.

     (b) No Conflict. (i) The execution and delivery of this Agreement by the
  Stockholder do not, and the performance of this Agreement by the
  Stockholder shall not, (A) conflict with or violate the Certificate of
  Incorporation or By-laws or equivalent organizational documents of the
  Stockholder, (B) conflict with or violate any law, rule, regulation, order,
  judgment or decree applicable to the Stockholder or by which the
  Stockholder's Shares are bound or affected or (C) result in any breach of
  or constitute a default (or an event that with notice or lapse of time or
  both would become a default) under, or give to others any rights of
  termination, amendment, acceleration or cancellation of or result in the
  creation of a lien or encumbrance on any of the Stockholder's Shares
  pursuant to, any note, bond, mortgage, indenture, contract, agreement,
  lease, license, permit, franchise or other instrument or obligation to
  which the Stockholder is a party or by which the Stockholder or the
  Stockholder's Shares are bound or affected, except, in the case of clauses
  (B) and (C), for any such conflicts, violations, breaches, defaults or
  other occurrences which would not prevent or delay the performance by the
  Stockholder of its obligations under this Agreement.

     (ii) The execution and delivery of this Agreement by the Stockholder do
  not, and the performance of this Agreement by the Stockholder shall not,
  require any consent, approval, authorization or permit of, or filing with
  or notification to, any Governmental Entity except for applicable
  requirements, if any, of the Securities Exchange Act of 1934, as amended,
  and except where the failure to obtain such consents, approvals,
  authorizations or permits, or to make such filings or notifications, would
  not prevent or delay the performance by the Stockholder of its obligations
  under this Agreement.

     (c) Title to the Shares. As of the date hereof, the Stockholder is the
  record and beneficial owner of 93,658,988 shares of Viacom Class A Common
  Stock. The Stockholder's Shares are all the voting securities of Viacom
  owned, either of record or beneficially, by the Stockholder. The
  Stockholder's Shares are owned free and clear of all security interests,
  liens, claims, pledges, options, rights of first refusal, agreements,
  limitations on the Stockholders voting rights, charges and other
  encumbrances of any nature whatsoever. The Stockholder has the sole right
  to vote and transfer the Stockholder's Shares, and the Stockholder has not
  appointed or granted any proxy, which appointment or grant is still
  effective, with respect to the Stockholder's Shares.

   Section 6. Effectiveness; Termination. This Agreement shall become effective
as of the date of this Agreement, provided that the Stockholder shall have no
obligation under Section 2(a), (b), (c) and (e) until the commencement of the
Specified Period. This Agreement shall terminate at the close of business on
the final day of the Specified Period.

   Section 7. Notices. All notices, requests, claims, demand and other
communications under this Agreement shall be in writing and shall be given or
made (and shall be deemed to have been duly given or made upon receipt) by
delivery in Person, by facsimile, by courier service or by registered or
certified mail (postage prepaid, return receipt requested) to the respective
parties at the following addresses (or at such other address for a party as
shall be specified in a notice given in accordance with this Section 7):

         if to Stockholder

                 National Amusements, Inc.
                 200 Elm Street
                 Dedham, MA 02026
                 Telecopier No.: (781) 461-1412
                 Attention: General Counsel

                                      E-4
<PAGE>

         with copies to:

                 Shearman & Sterling
                 599 Lexington Avenue
                 New York, New York 10022
                 Telecopier No.: (212) 848-7179
                 Attention: Creighton O'M. Condon, Esq. and
                         Stephen R. Volk, Esq.

         if to CBS:

                 CBS Corporation
                 51 West 52nd Street
                 35th Floor
                 New York, New York 10019
                 Telecopier No.: (212) 597-4031
                 Attention: Louis J. Briskman, Esq.
                         Executive Vice President
                         and General Counsel

         with copies to:

                 Cravath, Swaine & Moore
                 825 Eighth Avenue
                 New York, New York 10019
                 Telecopier No.: (212) 474-3700
                 Attention: Allen Finkelson, Esq. and
                         Scott A. Barshay, Esq.

   Section 8. Severability. If any term or other provision of this Agreement is
invalid, illegal or incapable of being enforced by any rule of Law, or public
policy, all other conditions and provisions of this Agreement shall
nevertheless remain in full force and effect so long as the economic or legal
substance of this Agreement is not affected in any manner materially adverse to
any party. Upon such determination that any term or other provision is invalid,
illegal or incapable of being enforced, the parties hereto shall negotiate in
good faith to modify this Agreement so as to effect the original intent of the
parties as closely as possible in a mutually acceptable manner in order that
the transactions contemplated by this Agreement be consummated as originally
contemplated to the fullest extent possible.

   Section 9. Entire Agreement; Assignment. This Agreement and the Merger
Agreement constitute the entire agreement among the parties with respect to the
subject matter hereof and supersede all prior agreements and undertakings, both
written and oral, among the parties, or any of them, with respect to the
subject matter hereof. Neither this Agreement nor any of the rights, interests
or obligations under this Agreement shall be assigned, in whole or in part, by
either of the parties hereto without the prior written consent of the other
party hereto, except that CBS may assign, its rights, interests and obligations
under this Agreement to Viacom by operation of law. Any purported assignment in
violation of this Section 9 shall be void.

   Section 10. Parties in Interest; Certain Events. This Agreement shall be
binding upon and inure solely to the benefit of each party hereto, and nothing
in this Agreement, express or implied, is intended to or shall confer upon any
other person any right, benefit or remedy of any nature whatsoever under or by
reason of this Agreement except as set forth in Section 2(g). The Stockholder
agrees that this Agreement and the obligations hereunder shall attach to the
Stockholder's Shares and shall be binding upon any person or entity to which
legal or beneficial ownership of the Stockholder's Shares shall pass, whether
by operation of law or otherwise, including the Stockholder's heirs, guardians,
administrators or successors. In the event of any stock

                                      E-5
<PAGE>

split, stock dividend, merger, reorganization, recapitalization or other change
in the capital structure of Viacom affecting the capital stock of Viacom, or
the acquisition of additional shares of Viacom Class A Common Stock or other
voting securities of Viacom by the Stockholder, the number of Stockholder's
Shares shall be adjusted appropriately and this Agreement and the obligations
hereunder shall attach to any additional shares of Viacom Class A Common Stock
or other voting securities of Viacom issued to or acquired by the Stockholder.

   Section 11. Specific Performance. The parties hereto agree that irreparable
damage would occur in the event any provision of this Agreement was not
performed in accordance with the terms hereof and that the parties shall be
entitled to specific performance of the terms hereof, in addition to any other
remedy at law or equity.

   Section 12. Governing Law. This Agreement shall be governed by and construed
in accordance with the laws of the State of Delaware, without regard to any
principles of conflicts of laws of such State.

   Section 13. Consent to Jurisdiction. (a) Each of the Stockholder and CBS
hereby irrevocably submits to the exclusive jurisdiction of the courts of the
State of Delaware and to the jurisdiction of the United States District Court
for the State of Delaware, for the purpose of any action or proceeding arising
out of or relating to this Agreement and each of CBS and the Stockholder hereby
irrevocably agrees that all claims in respect to such action or proceeding
shall be heard and determined exclusively in any Delaware state or federal
court. Each of CBS and the Stockholder agrees that a final judgment in any
action or proceeding shall be conclusive and may be enforced in other
jurisdictions by suit on the judgment or in any other manner provided by law.

   (b) Each of CBS and the Stockholder irrevocably consents to the service of
the summons and complaint and any other process in any other action or
proceeding relating to the transactions contemplated by this Agreement, on
behalf of itself or its property, by personal delivery of copies of such
process to such party. Nothing in this Section 13 shall affect the right of any
party to serve legal process in any other manner permitted by law.

   Section 14. Headings. The descriptive headings contained in this Agreement
are included for convenience of reference only and shall not affect in any way
the meaning or interpretation of this Agreement.

   Section 15. Amendments. This Agreement may be amended or modified, and the
terms and conditions hereof may be waived, only (i) by a written instrument
signed by the parties hereto or, in the case of a waiver, by each party waiving
compliance and (ii) after the Effective Time if any such amendment or waiver is
concurred in by at least 14 members of the Board of Directors of Viacom.

   Section 16. Counterparts. This Agreement may be executed and delivered
(including by facsimile transmission) in one or more counterparts, and by the
different parties hereto in separate counterparts, each of which when executed
and delivered shall be deemed to be an original but all of which taken together
shall constitute one and the same agreement.

   Section 17. WAIVER OF JURY TRIAL. EACH OF CBS AND THE STOCKHOLDER HEREBY
IRREVOCABLY WAIVES ALL RIGHT TO TRIAL BY JURY IN ANY ACTION, PROCEEDING OR
COUNTERCLAIM (WHETHER BASED ON CONTRACT, TORT OR OTHERWISE) ARISING OUT OF OR
RELATING TO THIS AGREEMENT OR THE ACTIONS OF CBS AND THE STOCKHOLDER IN THE
NEGOTIATION, ADMINISTRATION, PERFORMANCE AND ENFORCEMENT THEREOF.

                                      E-6
<PAGE>

   IN WITNESS WHEREOF, each of the parties hereto has caused this Agreement to
be executed as of the date first written above by their respective officers
thereunto duly authorized.

                                          National Amusements, Inc.

                                                  /s/ Sumner M. Redstone
                                          by __________________________________
                                                 Name: Sumner M. Redstone
                                                Title: Chairman, President
                                                 & Chief Executive Officer


                                          CBS Corporation

                                                  /s/ Fredric G. Reynolds
                                          by __________________________________
                                                 Name: Fredric G. Reynolds
                                             Title: Executive Vice President,
                                                  Chief Financial Officer

                                      E-7
<PAGE>

                                                                         ANNEX F

                                  VIACOM INC.

                             September 6, 1999

Sumner M. Redstone
The Carlyle Hotel
Suite 3201
35 East 76th Street
New York, New York 10021

Dear Mr. Redstone:

   This is to confirm our agreement that, effective as of the Effective Time
(as defined in the Agreement and Plan of Merger (the "Merger Agreement")
between Viacom Inc. ("Viacom") and CBS Corporation ("CBS"), dated as of the
date hereof) (the "Effective Date"), you shall be paid the following
compensation by Viacom, in addition to any compensation, benefits and
perquisites you have heretofore received from Viacom.

   As the sole compensation for services to be rendered by you in all
capacities to Viacom, its subsidiaries and affiliates, you will receive the
following compensation.

   (a) Salary: For all the services rendered by you in any capacity to Viacom,
its subsidiaries and affiliates, Viacom agrees to pay you a base salary at the
rate of $1,000,000 per annum ("Salary"), payable in accordance with Viacom's
then effective payroll practices.

   (b) Bonus Compensation: In addition to your Salary, you shall be entitled to
receive bonus compensation for each of the calendar years during your
employment with Viacom, determined and payable as follows ("Bonus"):

     (i) Your Bonus for each of the calendar years during your employment
  with Viacom will be based upon a measurement of performance against
  objectives in accordance with Viacom's Short-Term Incentive Plan and its
  Senior Executive Short-Term Incentive Plan, as the same may be amended from
  time to time (collectively, the "STIP"), which objectives shall be no less
  favorable to you than the objectives used to determine the amount of bonus
  payable to any other executive of Viacom whose bonus is based in whole or
  in part on corporate performance and who participates in the STIP.

     (ii) Your Target Bonus and Maximum Bonus opportunity for each calendar
  year (prorated for calendar year 2000 by multiplying such amount by a
  fraction, the numerator of which is the number of days in 2000 following
  the Effective Date, and the denominator of which is 365) during your
  employment with Viacom shall be as follows:

<TABLE>
<CAPTION>
   Year                                                     Target     Maximum
   ----                                                   ---------- -----------
   <S>                                                    <C>        <C>
   2000.................................................. $5,000,000 $10,000,000
   2001.................................................. $5,500,000 $11,000,000
   2002.................................................. $6,050,000 $12,100,000
   2003 and thereafter................................... $6,655,000 $13,310,000
</TABLE>

     (iii) Your Bonus for any calendar year shall be payable by February 28
  of the following year.

   (c) Deferred Compensation: In addition to your Salary and Bonus, you shall
earn, in respect of calendar year 2000 and each calendar year thereafter during
your employment with Viacom, an additional amount ("Deferred Compensation"),
the payment of which (together with the return thereon as provided in this
paragraph (c)) shall be deferred until January of the first calendar year
following the year in which you cease to be an "executive officer" of Viacom,
as defined for purposes of the Securities Exchange Act of 1934, as

                                      F-1
<PAGE>

amended. The amount of Deferred Compensation for calendar year 2000 shall be
$2,000,000, prorated by multiplying such amount by a fraction, the numerator of
which is the number of days in 2000 following the Effective Date, and the
denominator of which is 365. The amount of Deferred Compensation for calendar
years 2001 through 2003 shall be subject to annual increases each January 1st,
commencing January 1, 2001, in an amount equal to 10% of the sum of your Salary
and Deferred Compensation for the preceding year. Deferred Compensation shall
be credited to a bookkeeping account maintained by Viacom on your behalf, the
balance of which account shall periodically be credited (or debited) with
deemed positive (or negative) return calculated in the same manner, and at the
same times, as the deemed return on your account under the excess 401(k) plan
of Viacom (as such plan may be amended from time to time) is determined or, if
you do not participate in such plan, with a return to be mutually agreed by the
Company and you. Viacom's obligation to pay the Deferred Compensation
(including the return thereon provided for in this paragraph (c)) shall be an
unfunded obligation to be satisfied from the general funds of Viacom.

   (d) Grant: You will be awarded a grant (the "Grant") under Viacom's 1997
Long-Term Management Incentive Plan (the "1997 LTMIP") of stock options to
purchase 2,000,000 shares of Viacom's Class B Common Stock, effective as of the
Effective Date, with an exercise price equal to the fair-market value of
Viacom's Class B Common Stock on the date of the Grant. The Grant shall vest in
three equal installments on the first, second and third anniversaries of the
Effective Date. Such stock options shall be subject to terms identical in all
material respects to those applicable to the grant to be made to Mr. Karmazin
as of the Effective Date.

   If you agree with the foregoing terms, please execute this letter in the
space provided below and return a copy to the undersigned.


                                          VIACOM Inc.

                                                  /s/ Philippe P. Dauman
                                          By: _________________________________
                                                    Philippe P. Dauman
                                                      Deputy Chairman
ACCEPTED AND AGREED:

       /s/ Sumner M. Redstone
_____________________________________
         Sumner M. Redstone

September 6, 1999

                                      F-2
<PAGE>

                                                                         ANNEX G

                                  VIACOM INC.

                               September 6, 1999

Mel Karmazin
1 Central Park West
New York, New York 10023

Dear Mel:

   Viacom Inc. ("Viacom"), having an address at 1515 Broadway, New York, New
York 10036, agrees to employ you and you agree to accept such employment upon
the following terms and conditions:

     1. Term. The term of your employment hereunder shall commence on the
  Effective Time (as defined in the Agreement and Plan of Merger between
  Viacom and CBS Corporation ("CBS"), dated as of the date hereof (the
  "Merger Agreement"), pursuant to which CBS shall merge with and into
  Viacom) (the "Effective Date") and, unless terminated by Viacom or you
  pursuant to paragraph 8 hereof, shall continue through and until December
  31, 2003. The period from the Effective Date through December 31, 2003
  shall hereinafter be referred to as the "Employment Term," notwithstanding
  any earlier termination pursuant to paragraph 9. In the event that the
  Merger Agreement is terminated or otherwise abandoned, this Agreement shall
  be void ab initio.

     2. Duties. During the Employment Term, you agree to devote your entire
  business time, attention and energies to the business of Viacom and its
  subsidiaries. This is not intended to prevent you from engaging in other
  activities that do not conflict with or interfere with the performance of
  your duties and responsibilities hereunder. You will be President and Chief
  Operating Officer of Viacom reporting directly and solely to Sumner M.
  Redstone, the Chairman of the Board and Chief Executive Officer of Viacom
  (the "Chairman"), and, upon the termination of the Chairman's service as
  Chief Executive Officer during the Employment Term, you shall be appointed
  the Chief Executive Officer. You will perform such duties and have such
  responsibilities set forth in Article XIII of the Amended and Restated
  Certificate of Incorporation of Viacom to be effective as of the Effective
  Date (the "Certificate of Incorporation"), a copy of which is attached
  hereto as Exhibit A. You will have such authority as is necessary for the
  performance of your obligations hereunder. You shall serve as a member of
  the Boards of Directors of Viacom and Circular. Your principal place of
  business shall be at Viacom's headquarters in the New York City
  metropolitan area and you shall not be required to relocate outside of the
  New York City metropolitan area. You shall be entitled to continue to serve
  on the corporate, charitable and educational boards of which you are a
  member as of the date hereof.

     3. Compensation. As the sole compensation for services to be rendered by
  you during the Employment Term in all capacities to Viacom, its
  subsidiaries and affiliates, you will receive the following compensation.

     (a) Salary: For all the services rendered by you in any capacity to
  Viacom, its subsidiaries and affiliates, Viacom agrees to pay you a base
  salary at the rate of $1,000,000 per annum ("Salary"), payable in
  accordance with Viacom's then effective payroll practices.

     (b) Bonus Compensation: In addition to your Salary, you shall be
  entitled to receive bonus compensation for each of the calendar years
  during the Employment Term, determined and payable as follows ("Bonus"):

       (i) Your Bonus for each of the calendar years during the Employment
    Term will be based upon a measurement of performance against objectives
    in accordance with Viacom's Short-Term Incentive Plan and its Senior
    Executive Short-Term Incentive Plan, as the same may be amended from
    time to time

                                      G-1
<PAGE>

      (collectively, the "STIP"), which objectives shall be no less favorable
      to you than the objectives used to determine the amount of bonus payable
      to any other executive of Viacom whose bonus is based in whole or in
      part on corporate performance and who participates in the STIP.

       (ii) Your Target Bonus and Maximum Bonus opportunity for each
    calendar year (prorated for calendar year 2000 by multiplying such
    amount by a fraction, the numerator of which is the number of days in
    2000 following the Effective Date, and the denominator of which is 365)
    during the Employment Term shall be as follows:

<TABLE>
<CAPTION>
      Year                                                  Target     Maximum
      ----                                                ---------- -----------
      <S>                                                 <C>        <C>
      2000............................................... $5,000,000 $10,000,000
      2001............................................... $5,500,000 $11,000,000
      2002............................................... $6,050,000 $12,100,000
      2003............................................... $6,655,000 $13,310,000
</TABLE>

       (iii) Your Bonus for any calendar year shall be payable by February
    28 of the following year (even if not during the Employment Term).

     (c) Deferred Compensation: In addition to your Salary and Bonus, you
  shall earn, in respect of calendar year 2000 and each calendar year during
  the Employment Term after 2000, an additional amount ("Deferred
  Compensation"), the payment of which (together with the return thereon as
  provided in this paragraph 3(c)) shall be deferred until January of the
  first calendar year following the year in which you cease to be an
  "executive officer" of Viacom, as defined for purposes of the Securities
  Exchange Act of 1934, as amended. The amount of Deferred Compensation for
  calendar year 2000 shall be $2,000,000, prorated by multiplying such amount
  by a fraction, the numerator of which is the number of days in 2000
  following the Effective Date, and the denominator of which is 365. The
  amount of Deferred Compensation for calendar years 2001 through 2003 shall
  be subject to annual increases each January 1st, commencing January 1,
  2001, in an amount equal to 10% of the sum of your Salary and Deferred
  Compensation for the preceding year. Deferred Compensation shall be
  credited to a bookkeeping account maintained by Viacom on your behalf, the
  balance of which account shall periodically be credited (or debited) with
  deemed positive (or negative) return calculated in the same manner, and at
  the same times, as the deemed return on your account under the excess
  401(k) plan of Viacom (as such plan may be amended from time to time) is
  determined (it being understood and agreed that if at any time during which
  the Deferred Compensation remains payable your excess 401(k) account
  balance is distributed in full to you, your Deferred Compensation account
  shall continue to be credited or debited with a deemed return based on the
  investment portfolio in which your excess 401(k) account was notionally
  invested immediately prior to its distribution). Viacom's obligation to pay
  the Deferred Compensation (including the return thereon provided for in
  this paragraph 3(c)) shall be an unfunded obligation to be satisfied from
  the general funds of Viacom.

     (d) Grant: You will be awarded a grant (the "Grant") under Viacom's 1997
  Long-Term Management Incentive Plan (the "1997 LTMIP") of stock options to
  purchase 2,000,000 shares of Viacom's Class B Common Stock (such number to
  be adjusted for any stock split, stock dividend or other similar
  transaction that would result in an adjustment under the terms of the 1997
  LTMIP if such options were granted on the date hereof), effective as of the
  Effective Date, with an exercise price equal to the fair-market value of
  Viacom's Class B Common Stock on the Effective Date. Except as provided
  herein, the Grant shall be made in accordance with the standard terms of
  stock option awards under the 1997 LTMIP (a copy of the standard form of
  such stock option awards is attached hereto as Exhibit B), shall vest in
  three equal installments on the first, second and third anniversaries of
  the Effective Date and shall be for a ten-year term. In the event you cease
  to be employed by the Company for any reason upon the expiration of the
  Employment Term, you shall be able to exercise the Grant for two years
  following such termination.

                                      G-2
<PAGE>

   4. Benefits.

   (a) You shall be entitled to participate in such medical, dental and life
insurance, 401(k), pension and other plans as Viacom may have or establish from
time to time and in which any other Viacom executives are eligible to
participate. The foregoing, however, shall not be construed to require Viacom
to establish any such plans or to prevent the modification or termination of
such plans once established, and no such action or failure thereof shall affect
this Agreement; provided, however, that no modification of any plans in which
you participate shall be made which results in treating you less favorably than
other senior executives of Viacom. It is further understood and agreed that all
benefits (including without limitation, Viacom's Pension and Excess Pension
Plans, short term disability program, Long-Term Disability program and any
supplement thereto, life insurance and any applicable death benefit) you may be
entitled to as an employee of Viacom shall be based upon your Salary and, your
Deferred Compensation, as set forth in paragraphs 3(a) and (c) hereof, and not
upon any bonus compensation due, payable or paid to you hereunder, except where
the benefit plan expressly provides otherwise. In addition, it is hereby
expressly agreed that you shall retain all benefits that you have accrued under
any compensation and benefit plans of CBS. You shall be entitled to four (4)
weeks vacation.

   (b) Viacom shall provide you with no less than Five Million Dollars
($5,000,000) of term life insurance during the Employment Term. You shall have
the right to assign the policy for such life insurance to your spouse or issue
or to a trust or trusts primarily for the benefit of your spouse and/or issue.

   (c) In addition to the benefits described in paragraphs 4(a) and (b) hereof,
Viacom agrees that you shall be credited for service accrued or deemed accrued
prior to the Effective Date with CBS or any of its subsidiaries or predecessors
for all purposes under any employee benefit plans, programs or arrangement
established or maintained by Viacom or any of its subsidiaries; provided,
however that such crediting of service shall not operate to duplicate any
benefit or the funding of any such benefit.

   (d) Notwithstanding anything herein to the contrary, if it is determined
that any payment or benefit provided to you (whether hereunder or otherwise,
and including any payments or benefits resulting from the transactions
contemplated by the Merger Agreement) would be subject to the excise tax
imposed by Section 4999 of the Code or any interest or penalties with respect
to such excise tax (such excise tax, together with any interest or penalties
thereon, is herein referred to as an "Excise Tax"), then you shall be entitled
to an additional cash payment (a "Gross-Up Payment") in an amount that will
place you in the same after-tax economic position that you would have enjoyed
if the Excise Tax had not applied to the payment. The amount of the Gross-Up
Payment shall be determined by Viacom's regular independent auditors. No Gross-
Up Payments shall be payable hereunder if Viacom's auditors determine that such
payments are not subject to an Excise Tax. Viacom's auditors shall be paid by
Viacom for services performed hereunder.

   5. Business Expenses. During the Employment Term, you shall be reimbursed
for such reasonable travel and other expenses incurred in the performance of
your duties hereunder as are customarily reimbursed to senior executives of
Viacom.

   6. Perquisites. You shall be eligible for all perquisites made available by
Viacom from time to time during the Employment Term to other senior executives
of Viacom. Without limiting the generality of the foregoing, you shall be
entitled to (i) a car allowance and insurance in accordance with Viacom's
policy and (ii) use of a private airplane on a basis no less favorable than as
provided by CBS to you as of the date of execution of this Agreement, or, if
more beneficial to you, as provided by Viacom to any of its senior executives.

   7. Exclusive Employment, Confidential Information, Etc.

   (a) Non-Competition. You agree that your employment hereunder is on an
exclusive basis, and that during the period of your employment hereunder and,
in the event during the Employment Term, of (x) a termination of your
employment pursuant to paragraph 9(a) hereof or (y) your resignation without
Good Reason, for a period of eighteen (18) months following the date of such
termination or resignation, as the case

                                      G-3
<PAGE>

may be (the "Non-Compete Period"), you will not engage in any other business
activity which is in conflict with your duties and obligations hereunder. You
agree that during the Non-Compete Period you shall not directly or indirectly
engage in or participate as an officer, employee, director, agent of or
consultant for any business directly competitive with that of Viacom, nor shall
you make any investments in any company or business competing with Viacom;
provided, however, that nothing herein shall prevent you from investing as less
than a two (2%) percent shareholder in the securities of any company listed on
a national securities exchange or quoted on an automated quotation system.

   (b) Confidential Information. You agree that you shall not, during the
Employment Term or at any time thereafter, use for your own purposes, or
disclose to or for the benefit of any third party, any trade secret or other
confidential information of Viacom or any of its affiliates or predecessors
(except as may be required by law or in the performance of your duties
hereunder consistent with Viacom's policies) and that you will comply with any
confidentiality obligations of Viacom to a third party, whether under agreement
or otherwise. Notwithstanding the foregoing, confidential information shall be
deemed not to include information which (i) is or becomes generally available
to the public other than as a result of a disclosure by you or any other person
who directly or indirectly receives such information from you or at your
direction or (ii) is or becomes available to you on a non-confidential basis
from a source which is entitled to disclose it to you.

   (c) No Employee Solicitation. You agree that, during the Employment Term and
for one (1) year thereafter, you shall not, directly or indirectly, engage,
employ, or solicit the employment of any person who is then or has been within
six (6) months prior thereto, an employee of Viacom or any of Viacom's
affiliates or predecessors.

   (d) Viacom Ownership. The results and proceeds of your services hereunder,
including, without limitation, any works of authorship resulting from your
services during your employment with Viacom and/or any of its affiliates or
predecessors and any works in progress, shall be works-made-for-hire and Viacom
shall be deemed the sole owner throughout the universe of any and all rights of
whatsoever nature therein, whether or not now or hereafter known, existing,
contemplated, recognized or developed, with the right to use the same in
perpetuity in any manner Viacom determines in its sole discretion without any
further payment to you whatsoever. If, for any reason, any of such results and
proceeds shall not legally be a work-for-hire and/or there are any rights which
do not accrue to Viacom under the preceding sentence, then you hereby
irrevocably assign and agree to assign any and all of your right, title and
interest thereto, including, without limitation, any and all copyrights,
patents, trade secrets, trademarks and/or other rights of whatsoever nature
therein, whether or not now or hereafter known, existing, contemplated,
recognized or developed to Viacom, and Viacom shall have the right to use the
same in perpetuity throughout the universe in any manner Viacom determines
without any further payment to you whatsoever. You shall, from time to time, as
may be requested by Viacom, do any and all things which Viacom may deem useful
or desirable to establish or document Viacom's exclusive ownership of any and
all rights in any such results and proceeds, including, without limitation, the
execution of appropriate copyright and/or patent applications or assignments.
To the extent you have any rights in the results and proceeds of your services
that cannot be assigned in the manner described above, you unconditionally and
irrevocably waive the enforcement of such rights. This paragraph 7(d) is
subject to, and shall not be deemed to limit, restrict, or constitute any
waiver by Viacom of any rights of ownership to which Viacom may be entitled by
operation of law by virtue of Viacom or any of its affiliates or predecessors
being your employer.

   (e) Litigation. You agree that, during the Employment Term, for one (1) year
thereafter and, if longer, during the pendancy of any litigation or other
proceeding, (i) you shall not communicate with anyone (other than your own
attorneys and tax advisors and, except to the extent required by law or
necessary in the performance of your duties hereunder) with respect to the
facts or subject matter of any pending or potential litigation, or regulatory
or administrative proceeding involving any of Viacom's affiliates or
predecessors, other than any litigation or other proceeding in which you are a
party-in-opposition, without giving prior notice to Viacom or Viacom's counsel,
and (ii) in the event that any other party attempts to obtain information or
documents from you with respect to matters possibly related to such litigation
or other proceeding, you shall promptly so notify Viacom's counsel unless you
are prohibited from doing so under applicable law.


                                      G-4
<PAGE>

   (f) No Right to Write Books, Articles, Etc. During the Employment Term,
except as authorized by Viacom, you shall not prepare or assist any person or
entity in the preparation of any books, articles, television or motion picture
productions or other creations, concerning Viacom or any of Viacom's affiliates
or predecessors or any of their officers, directors, agents, employees,
suppliers or customers.

   (g) Return of Property. All documents, data, recordings, or other property,
whether tangible or intangible, including all information stored in electronic
form, obtained or prepared by or for you and utilized by you in the course of
your employment with Viacom or any of its affiliates or predecessors shall
remain the exclusive property of Viacom. In the event of the termination of
your employment for any reason, Viacom reserves the right, to the extent
permitted by law and in addition to any other remedy Viacom may have, to deduct
from any monies otherwise payable to you the following: (i) the full amount of
any debt you owe to Viacom or any of its affiliates or predecessors at the time
of or subsequent to the termination of your employment with Viacom, and (ii)
the value of the Viacom property which you retain in your possession after the
termination of your employment with Viacom. In the event that the law of any
state or other jurisdiction requires the consent of an employee for such
deductions, this Agreement shall serve as such consent.

   (h) Non-Disparagement. You and, to the extent set forth in the next
sentence, Viacom agree that each party shall not, during the Employment Term
and for one (1) year thereafter criticize, ridicule or make any statement which
disparages or is derogatory of the other party in any communications with any
customer or client. Viacom's obligations under the preceding sentence shall be
limited to communications by its senior corporate executives having the rank of
Senior Vice President or above.

   (i) Injunctive Relief. Viacom has entered into this Agreement in order to
obtain the benefit of your unique skills, talent, and experience. You
acknowledge and agree that any violation of paragraphs 7(a) through (k) hereof
will result in irreparable damage to Viacom, and, accordingly, Viacom may
obtain injunctive and other equitable relief for any breach or threatened
breach of such paragraphs, in addition to any other remedies available to
Viacom.

   (j) Survival; Modification of Terms. Your obligations under paragraphs 7(a)
through (i) hereof shall remain in full force and effect for the entire period
provided therein notwithstanding the termination of the Employment Term
pursuant to paragraph 9 hereof or otherwise. You and Viacom agree that the
restrictions and remedies contained in paragraphs 7(a) through (k) are
reasonable and that it is your intention and the intention of Viacom that such
restrictions and remedies shall be enforceable to the fullest extent
permissible by law. If it shall be found by a court of competent jurisdiction
that any such restriction or remedy is unenforceable but would be enforceable
if some part thereof were deleted or the period or area of application reduced,
then such restriction or remedy shall apply with such modification as shall be
necessary to make it enforceable.

   (k) No Selling of Viacom Stock without Board Consent. In consideration of
your employment hereunder, you hereunder agree that, except as otherwise
provided herein, during the period commencing on the date hereof and ending on
the third anniversary of the Effective Date, you shall not sell or dispose of
(nor exercise any limited rights or stock appreciation rights with respect to)
any shares of capital stock of CBS or Viacom held by you, your immediate family
members (which does not include your former spouse), or trusts or other
entities in which you or your immediate family members have a controlling
interest or are beneficiaries (together, the "Family Affiliates" and each, a
"Family Affiliate") that you or any Family Affiliate now hold, or in the future
may acquire, including, without limitation, shares that you or any Family
Affiliate receive pursuant to the transactions contemplated by the Merger
Agreement (whether in exchange for shares of CBS common stock or otherwise),
under any stock options or other equity-based compensation awards made to you
by CBS or by Viacom under this Agreement or under any other agreement awarding
you shares of capital stock of Viacom, without first obtaining the consent of
(i) if prior to the Effective Date, the Chairman, or (ii) if on or following
the Effective Date, fourteen of the eighteen members of the Board of Viacom.
This restriction shall lapse in the event that, during the Employment Term, you
are terminated without Cause, resign for Good Reason, die or become disabled.
Notwithstanding the foregoing, between the first anniversary of the Effective
Date and the second anniversary of the Effective Date you and the Family
Affiliates collectively may sell or

                                      G-5
<PAGE>

dispose of a number of shares equal to up to 10% of the shares held by you and
the Family Affiliates on the Effective Date (including, for this purpose, the
shares underlying any equity-based compensation awards held by you on the
Effective Date, but not shares underlying any equity-based compensation awards
granted to you pursuant to paragraph 3(d) or at any time after the Effective
Date). Between the second anniversary of the Effective Date and the third
anniversary of the Effective Date, you and the Family Affiliates collectively
may sell or dispose of a number of shares equal to up to 10% of the shares held
by you and the Family Affiliates on the second anniversary of the Effective
Date (including, for this purpose, the shares underlying any equity-based
compensation awards held by you on the Effective Date, but not shares
underlying any equity-based compensation awards granted to you pursuant to
paragraph 3(d) or at any time after the Effective Date), plus any shares that
were not sold or disposed of by you and the Family Affiliates collectively
under the prior year's limits. Notwithstanding the foregoing, you may transfer
shares to Family Affiliates, but such shares shall remain subject to the
restrictions contained in this paragraph 7(k).

   8. Incapacity. In the event you become totally medically disabled at any
time during the Employment Term and are not expected to be able to
substantially perform your duties for a six (6) consecutive month period, the
Chairman, at any time after such disability has in fact continued for 60
consecutive days, may determine that Viacom requires such duties and
responsibilities be performed by another executive. In the event you become
disabled, you will first receive benefits under Viacom's short-term disability
program for the first 26 weeks of consecutive absence. Thereafter, you will be
eligible to receive benefits under Viacom's Long-Term Disability ("LTD")
program or any supplement thereto, in accordance with its terms.

   Upon receipt of benefits under the LTD program you will also be entitled to
receive, subject to applicable withholding taxes:

     (i) a Target Bonus prorated for the portion of calendar year through the
  date on which you become eligible to receive benefits under the LTD
  program, payable at the time that the Bonus for such calendar year would
  otherwise be paid;

     (ii) prorated Deferred Compensation for the calendar year in which such
  benefits commence and Deferred Compensation attributable to prior calendar
  years, payable, together with the return thereon as provided in paragraph
  3(c), prior to January 31 of the calendar year following the calendar year
  in which such benefits commence;

     (iii) stock options granted to you under the 1997 LTMIP which are
  exercisable on or prior to the date as of which benefits commence under the
  LTD program or that would have vested and become exercisable on or before
  the last day of the Employment Term will be exercisable for two (2) years
  after the date as of which such benefits commence or, if later, until
  December 31, 2003, but in no event may such stock options be exercised
  following the expiration date of such stock options; and

   In the event that you thereafter become able to substantially perform your
duties, you will then be entitled to receive from Viacom your Salary and
Deferred Compensation at the rate being paid to you immediately prior to the
commencement of such disability, and your Bonus calculated pursuant to
paragraph 3(b) hereof, through the remainder of the Employment Term reduced by
any employment compensation earned by you for any work or service performed for
any other person.

   9. Termination.

   (a) Termination for Cause. Viacom may, at its option, terminate your
employment under this Agreement forthwith for "cause", and Viacom shall
thereafter have no further obligations under this Agreement, including, without
limitation, any obligation to pay Salary or Bonus or provide benefits under
this Agreement; provided, however, that Viacom may terminate this Agreement
pursuant to this paragraph only with the affirmative vote of fourteen of the
eighteen members of the Board of Viacom at a meeting called for such purpose at
which you and a counsel of your choosing shall have an opportunity to be heard.
For purposes of this Agreement, termination of this Agreement for "cause" shall
mean termination for embezzlement, fraud or other conduct

                                      G-6
<PAGE>

which would constitute a felony, conviction of a felony, or willful
unauthorized disclosure of confidential information, or if you at any time
materially breach this Agreement (including, without limitation, your failure,
neglect of or refusal to substantially perform your obligations hereunder as
set forth in paragraphs 2, 7(k) and 12 hereof), except in the event of your
disability as set forth in paragraph 8. Anything herein to the contrary
notwithstanding, Viacom will give you written notice prior to terminating this
Agreement for your material breach setting forth the exact nature of any
alleged breach and the conduct required to cure such breach. Except for a
breach which by its nature cannot be cured, you shall have ten (10) business
days from the giving of such notice within which to cure and within which
period Viacom cannot terminate this Agreement for the stated reasons.

   (b) Good Reason Termination. You may terminate your employment hereunder for
"Good Reason" at any time during the Employment Term by written notice to
Viacom not more than thirty (30) days after the occurrence of the event
constituting "Good Reason". Such notice shall state an effective date no
earlier than thirty (30) business days after the date it is given. Viacom shall
have ten (10) business days from the giving of such notice within which to
cure. Good Reason shall mean any of the following, without your prior written
consent, other than in connection with the termination of your employment for
"cause" (as defined above) or in connection with your permanent disability:

     (i) the assignment to you by Viacom of duties substantially inconsistent
  with your positions, duties, responsibilities, titles or offices, the
  withdrawal of a material part of your responsibilities or a change in your
  reporting relationship, as set forth in paragraph 2 or in Article XIII of
  the Certificate of Incorporation as in effect on the Effective Date;

     (ii) a reduction by Viacom in your Salary or Target Bonus as in effect
  at the date hereof or as the same may be increased from time to time during
  the Employment Term;

     (iii) Viacom's requiring you to be based anywhere other than the New
  York City metropolitan area, except for required travel on Viacom's
  business to any extent substantially consistent with business travel
  obligations of other senior executives of Viacom;

     (iv) Viacom's violation of Article XIII of the Certificate of
  Incorporation; or

     (v) the material breach by Viacom of its obligations hereunder.

   (c) Termination Without Cause. Viacom may terminate your employment under
this Agreement without "cause" (as defined above) at any time during the
Employment Term by written notice to you; provided, however, that Viacom may
terminate your employment pursuant to this paragraph only with the affirmative
vote of fourteen of the eighteen members of the Board of Viacom.

   (d) Termination Payments, Etc. In the event that your employment terminates
pursuant to paragraph 9(b) or 9(c) hereof, you shall be entitled to receive,
subject to applicable withholding taxes:

     (i) your Salary as provided in paragraph 3(a) until the end of the
  Employment Term, payable in accordance with Viacom's then effective payroll
  practices;

     (ii) bonus compensation for each calendar year during the Employment
  Term equal to your Target Bonus as set forth in paragraph 3(b);

     (iii) Deferred Compensation for each calendar year during the Employment
  Term as set forth in paragraph 3(c); Deferred Compensation attributable to
  the calendar year in which the termination pursuant to paragraph 9(b) or
  9(c) hereof occurs and to prior calendar years shall be payable, together
  with the return thereon as provided in paragraph 3(c), prior to January 31
  of the calendar year following such termination; and Deferred Compensation
  attributable to subsequent calendar years shall be payable, together with
  the return thereon as provided in paragraph 3(c), prior to January 31 of
  each such following calendar year;


                                      G-7
<PAGE>

     (iv) your perquisites as provided in paragraph 6 until the end of the
  Employment Term, payable in accordance with Viacom's then effective payroll
  practices;

     (v) medical and dental insurance coverage until the end of the
  Employment Term or, if earlier, the date on which you become eligible for
  medical and dental coverage from a third party employer; during this
  period, Viacom will pay an amount equal to the applicable COBRA premiums
  (or such other amounts as may be required by applicable law) (which amount
  will be included in your income for tax purposes to the extent required by
  applicable law); at the end of such period, you may elect to continue your
  medical and dental insurance coverage at your own expense for the balance,
  if any, of the period required by law;

     (vi) life insurance coverage as set forth in paragraph 4(b) until the
  end of the Employment Term (the amount of such insurance to be reduced by
  the amount of any insurance provided by a new employer without cost to
  you);

     (vii) stock options granted to you under the 1997 LTMIP which are
  exercisable on or prior to the date of the termination of your employment
  under paragraph 9(b) or 9(c) or that would have vested and become
  exercisable on or before the last day of the Employment Term will be
  exercisable for two (2) years after the date of such termination or, if
  later, until December 31, 2003, but in no event may such stock options be
  exercised following the expiration date of such stock options;

     (viii) a supplemental pension benefit calculated in accordance with the
  terms of the Excess Pension Plan and paragraph 4(c) as though you were
  employed through the end of the Employment Term; and

     (ix) provision of an appropriate office and secretarial assistance for
  up to six (6) months after the termination of your employment.

   The payments provided for in (i) above are in lieu of any severance or
income continuation or protection under any Viacom plan that may now or
hereafter exist. The payments and benefits to be provided pursuant to this
paragraph 9(d) shall constitute liquidated damages, and shall be deemed to
satisfy and be in full and final settlement of all obligations of Viacom to you
under this Agreement.

   (e) Termination of Benefits. Notwithstanding anything in this Agreement to
the contrary (except as otherwise provided in paragraph 9(d) with respect to
medical, dental and life insurance and Excess Pension Plan benefits or in
paragraphs 7 and 8 with respect to continued exercisability of options),
coverage under all Viacom benefit plans and programs (including, without
limitation, vacation, 401(k), excess 401(k) and pension plans, LTD and
accidental death and dismemberment and business travel and accident insurance)
will terminate upon the termination of your employment except to the extent
otherwise expressly provided in such plans or programs.

   10. Death. If you die prior to the end of the Employment Term, your
beneficiary or estate shall be entitled to receive your Salary up to the date
on which the death occurs, a pro-rated Target Bonus and pro-rated Deferred
Compensation for the calendar year in which the death occurs and Deferred
Compensation attributable to prior calendar years payable, together with the
return thereon as provided in paragraph 3(c), prior to January 31 of the
following calendar year. In addition, the vesting of all stock options granted
under the 1997 LTMIP that are not exercisable as of the date on which the death
occurs shall be accelerated, and your beneficiary or estate shall be entitled
to exercise such stock options, together with all stock options that are
exercisable as of the date of your death, for two (2) years after the date of
death or, if later, until December 31, 2003, but in no event may such stock
options be exercised following the expiration date of such stock options.

   11. Section 317 and 507 of the Federal Communications Act. You represent
that you have not accepted or given nor will you accept or give, directly or
indirectly, any money, services or other valuable consideration from or to
anyone other than Viacom for the inclusion of any matter as part of any film,
television program or other production produced, distributed and/or developed
by Viacom and/or any of its affiliates or predecessors.

                                      G-8
<PAGE>

   12. Equal Opportunity Employer. You acknowledge that Viacom is an equal
opportunity employer. You agree that you will comply with Viacom policies
regarding employment practices and with applicable federal, state and local
laws prohibiting discrimination on the basis of race, color, creed, national
origin, age, sex or disability.

   13. Indemnification.

   (a) Viacom shall indemnify and hold you harmless, to the maximum extent
permitted by law and by the Certificate of Incorporation and/or the By-laws of
Viacom, against judgments, fines, amounts paid in settlement of and reasonable
expenses incurred by you in connection with the defense of any action or
proceeding (or any appeal therefrom) in which you are a party by reason of your
position as President and Chief Operating Officer or any other office you may
hold with Viacom or its affiliates or by reason of any prior positions held by
you with Viacom or any of its affiliates or predecessors or for any acts or
omissions made by you in good faith in the performance of any of your duties as
an officer of Viacom.

   (b) To the extent that Viacom maintains officers' and directors' liability
insurance, you will be covered under such policy.

   14. Notices. All notices required to be given hereunder shall be given in
writing, by personal delivery or by mail at the respective addresses of the
parties hereto set forth above, or at such other address as may be designated
in writing by either party. Any notice given by mail shall be deemed to have
been given three days following such mailing.

   15. Assignment. This is an Agreement for the performance of personal
services by you and may not be assigned by you or Viacom except that Viacom may
assign this Agreement to any affiliate of or any successor in interest to
Viacom.

   16. New York Law, Etc. This Agreement and all matters or issues collateral
thereto shall be governed by the laws of the State of New York applicable to
contracts entered into and performed entirely therein. Any action to enforce
this Agreement shall be brought in the state or federal courts located in the
City of New York.

   17. No Implied Contract. Nothing contained in this Agreement shall be
construed to impose any obligation on Viacom to renew this Agreement or any
portion thereof. The parties intend to be bound only upon execution of a
written agreement and no negotiation, exchange of draft or partial performance
shall be deemed to imply an agreement. Neither the continuation of employment
nor any other conduct shall be deemed to imply a continuing agreement upon the
expiration of this Agreement.

   18. Entire Understanding. This Agreement contains the entire understanding
of the parties hereto relating to the subject matter herein contained, and can
be changed only by a writing signed by both parties hereto.

   19. Void Provisions. If any provision of this Agreement, as applied to
either party or to any circumstances, shall be adjudged by a court to be void
or unenforceable, the same shall be deemed stricken from this Agreement and
shall in no way affect any other provision of this Agreement or the validity or
enforceability of this Agreement.

   20. Supersedes Previous Agreement. Effective as of the Effective Date, this
Agreement shall supersede and cancel all prior agreements relating to your
employment by Viacom or any of its affiliates and predecessors, including,
without limitation, the employment agreement with Westinghouse Electric
Corporation, dated as of June 20, 1996, and any amendments thereto.
Notwithstanding the preceding sentence, this Agreement is not intended, and
shall not be construed, to affect your rights in any compensation or benefits
that have been granted or accrued prior to the beginning of the Employment
Term.

                                      G-9
<PAGE>

   If the foregoing correctly sets forth our understanding, please sign one
copy of this letter and return it to the undersigned, whereupon this letter
shall constitute a binding agreement between us.

                                          Very truly yours,

                                          Viacom Inc.

                                                  /s/ Michael D. Fricklas
                                          By: _________________________________
                                                    Michael D. Fricklas
                                              Senior Vice President, General
                                                   Counsel and Secretary

ACCEPTED AND AGREED:

           /s/ Mel Karmazin
_____________________________________
             Mel Karmazin

                                      G-10
<PAGE>

                                   EXHIBIT A

     Article XIII of the Amended and Restated Certificate of Incorporation
                                   (attached)

                                      G-11
<PAGE>

                                   EXHIBIT B

                          Form of the Award Agreement
                                   (attached)

                                      G-12
<PAGE>

                                                                     EXHIBIT A-1

                     RESTATED CERTIFICATE OF INCORPORATION
                                       OF
                                  VIACOM INC.

                                  ARTICLE XIII

                         Governance of the Corporation
                            During Specified Period

   (1) Definitions. As used in this Article XIII, the following terms shall
have the following meanings:

     (a) "CBS" shall mean CBS Corporation, a Pennsylvania corporation,
  immediately prior to the Effective Time.

     (b)  "CBS Directors" shall mean (i) eight (8) of those directors serving
  as members of the Board of Directors of CBS on September 6, 1999 (or any
  Independent Directors elected or appointed prior to the Effective Time to
  serve as a CBS Director) who are designated as such by the Board of
  Directors of CBS prior to the Effective Time and (ii) any Replacement CBS
  Director (as defined in Section 2(b) of this Article XIII).

     (e) "CEO" shall mean the Chief Executive Officer.

     (d) "COO" shall mean the President and Chief Operating Officer.

     (e) "Effective Time" shall mean the time of filing of the Certificate of
  Merger to which this Certificate of Incorporation is attached.

     (f) "Independent Director" shall mean a disinterested, independent
  person (determined in accordance with customary standards for independent
  directors applicable to U.S. public companies).

     (g) "NAI" shall mean National Amusements, Inc., a Maryland corporation,
  and its successors or assigns.

     (h) "Specified Independent Directors" shall mean the directors of the
  Corporation first elected after 1993 and who are not management of the
  Corporation or NAI (together with any replacements of such persons).

     (i) "Specified Period" shall mean the period of three years commencing
  at the Effective Time.

     (j) "Stockholder Agreement" shall mean the Stockholder Agreement dated
  as of September 6, 1999, by and between NAI and CBS, relating to
  Corporation governance matters.

     (k) "Viacom Directors" shall mean the ten (10) directors of the
  Corporation serving as the Board of Directors of the Corporation
  immediately prior to the Effective Time (including the Specified
  Independent Directors).

   (2) Directors.

   (a) Effective immediately at the Effective Time, the Board of Directors
shall consist of eighteen (18) directors. The number of directors may be fixed
by resolution of the Board from time to time, provided, however, that the size
of the Board of Directors may not be changed during the Specified Period
without the approval of at least fourteen (14) directors. At the Effective
Time, ten (10) directors shall be Viacom Directors and eight (8) directors
shall be CBS Directors.

   (b) Until the expiration of the Specified Period, the Board of Directors
(subject to the fiduciary duties of the directors) shall take all action
necessary to ensure that any seat on the Board of Directors held by (i) a CBS

                                      G-13
<PAGE>

Director which becomes vacant is filled promptly by a person qualifying as an
Independent Director and designated to fill such seat by a majority of the CBS
Directors remaining on the Board of Directors (a "Replacement CBS Director")
and (ii) a Specified Independent Director which becomes vacant is filled
promptly by an Independent Director who is the chief executive officer, chief
operating officer or chief financial officer or former chief executive officer
of a Fortune 500 company or a non-U.S. public company of comparable size.

   (c) During the Specified Period, all committees of the Board of Directors
(other than the Compensation Committee and the Officers Nominating Committee)
shall have such number of CBS Directors as equals the total number of members
of the Committee multiplied by a fraction, the numerator of which is eight (8)
and the denominator of which is eighteen (18), rounded to the closest whole
number; provided that in no event shall any committee have (x) fewer than one
(1) CBS Director or (y) less than a majority of Viacom Directors.

   (d) During the Specified Period, the Board of Directors shall not take any
action or fail to take any action which would have the effect of eliminating,
limiting, restricting, avoiding or otherwise modifying the effect of the
provisions set forth in this Article XIII (e.g., by creating a holding company
structure if the certificate of incorporation or similar document of such
holding company does not contain equivalent provisions).

   (3) Chairman and Chief Executive Officer.

   (a) At the Effective Time, Sumner Redstone shall remain the Chairman and
CEO. In the event that Sumner Redstone is not the CEO at the Effective Time or
ceases to be the CEO at any time during the Specified Period, then Mel
Karmazin, if he is COO at such time, shall succeed to the position of CEO for
the remainder of the Specified Period. During any such period of succession,
Mel Karmazin shall continue to exercise the powers, rights, functions and
responsibilities of the COO in addition to exercising those of the CEO.

   (b) The Chairman shall chair all meetings of the Board of Directors and
stockholders at which he is present.

   (c) The CEO shall be responsible, in consultation with the COO, for
corporate policy and strategy and the COO shall consult on all major decisions
with, and shall report directly to, the CEO, during the Specified Period;
provided, however, that the CEO shall not exercise any powers, rights,
functions or responsibilities of the COO unless Mel Karmazin is the CEO.

   (4) President and Chief Operating Officer.

   (a) At the Effective Time, the President and Chief Operating Officer of the
Corporation shall be Mel Karmazin. During the Specified Period, Mel Karmazin
may not be terminated or demoted from the position of COO (or, in the event
that Sumner Redstone is not the CEO, from the position of CEO) and no COO
Functions (as defined below) may be changed without the affirmative vote of at
least fourteen (14) directors.

   (b) Subject to the requirement that the COO consult with the CEO on all
major decisions, the powers, rights, functions and responsibilities of the COO
(collectively, the "COO Functions") shall include, without limitation, the
following:

     (i) supervising, coordinating and managing the Corporation's business,
  operations, activities, operating expenses and capital allocation;

     (ii) matters relating to officers (other than the Chairman, CEO and COO)
  and employees, including, without limitation, hiring (subject to (A) the
  specific Board of Directors authority described below with respect to the
  CFO, the General Counsel and the Controller and (B) Section 5 below),
  terminating, changing positions and allocating responsibilities of such
  officers and employees; and


                                      G-14
<PAGE>

     (iii) substantially all of the powers, rights, functions and
  responsibilities typically exercised by a chief operating officer.

   All officers (other than the Chairman, CEO and COO) will report, directly or
indirectly, to the COO (this reporting relationship will be deemed a COO
Function).

   (c) In the event that Mel Karmazin is not COO or CEO, the Board may
terminate the COO's employment, eliminate the COO position and the Officers
Nominating Committee and reallocate the COO Functions without regard to the
other provisions of this Article XVIII.

   (5) Officers Nominating Committee; Compensation Committee.

   (a) Subject to the powers of the Compensation Committee set forth below,
during the Specified Period, all powers of the Board of Directors, including,
without limitation, the right to hire, elect, terminate, change positions,
allocate responsibilities or determine non-equity compensation, with respect to
officers and employees, shall be exercised, subject to clauses (b) and (c)
below, by, and delegated to, the Officers Nominating Committee of the Board of
Directors. The Officers Nominating Committee shall consist solely of the member
of the Board of Directors who is the COO, except that in the event Mel Karmazin
succeeds to the position of CEO, the sole member of the Officers Nominating
Committee shall be the member of the Board of Directors who is the CEO.

   (b) The Officers Nominating Committee shall have no powers with respect to
the Chairman, CEO and COO, and shall not have the power to fill the positions
of Chief Financial Officer, Controller or General Counsel of the Corporation
without the approval of the Board of Directors; provided that this provision
shall in no way affect the other powers and authorities of the Officers
Nominating Committee with respect to the Chief Financial Officer, Controller
and General Counsel positions, including, without limitation, the power to
terminate employment of persons holding such positions.

   (c) The Compensation Committee shall not be required to, or have any power
to, approve the annual compensation of (i) any employee if the total value of
such employee's annual cash compensation (assuming for this purpose that the
actual bonus of each officer and employee is equal to his or her target bonus)
is less than $1 million or (ii) talent (as such term is commonly used in the
media or entertainment industries), in each such case which power shall be
delegated to the Officers Nominating Committee. The annual compensation of all
other officers and employees and any equity or equity-based compensation of any
officer or employee must be approved by the Compensation Committee.

   (d) The Compensation Committee shall consist of three CBS Directors who are
Independent Directors and three non-CBS Directors, two of whom will be the
Specified Independent Directors and the other of whom will be an Independent
Director.

   (e) Any decision or determination of the Officers Nominating Committee may
be reversed or overridden by (and only by) the affirmative vote of at least
fourteen (14) directors.

   (6) Stockholder Agreement.

   The Stockholder Agreement may not be amended, and no provision thereof may
be modified or waived, except with the approval of at least fourteen (14)
directors.

   (7) Issuance of Voting Stock.

   During the Specified Period, in addition to any other approval required by
law or by this Restated Certificate of Incorporation, the Corporation may not
issue (i) additional shares of Class A Common Stock or (ii) any shares of
Preferred Stock or any other class or series of stock or securities, in each
case with, or convertible into or exchangeable or exercisable for stock or
other securities with, the right to vote on any

                                      G-15
<PAGE>

matter on which stockholders are entitled to vote if the result would be that
parties bound by the Stockholder Agreement could fail to own at least a
majority of the outstanding shares of voting stock of the Corporation.

   (8) Voting.

   During the Specified Period, except for those actions set forth on Annex I
to this Restated Certificate of Incorporation, which shall require the approval
of the Board of Directors, all action by the Board of Directors shall require
the affirmative vote of at least fourteen (14) directors. At all meetings of
the Board of Directors a majority of the full Board of Directors shall
constitute a quorum for the transaction of business and the act of a majority
of the Directors present at any meeting at which there is a quorum shall be the
act of the Board of Directors, except as may be otherwise specifically provided
by statute or this Restated Certificate of Incorporation. If a quorum shall not
be present at any meeting of the Board of Directors, the Directors present
thereat may adjourn the meeting from time to time, without notice other than
announcement at the meeting, until a quorum shall be present.

   (9) Amendment.

   Until the expiration of the Specified Period the provisions of any Article
of this Restated Certificate which refer to this Article XIII, the provisions
of this Article XIII, and the provisions of Article VIII of the by-laws of the
Corporation, may not be amended, altered, repealed or waived in any respect
without the approval of at least fourteen (14) directors.

   (10) Successors.

   During the Specified Period, the provisions of this Article XIII shall be
applicable to (i) any successor to the Corporation as the result of a merger,
consolidation or other business combination, whether or not the Corporation is
the surviving company in such transaction, or otherwise and (ii) any
corporation or other entity with respect to which the Corporation or its
successor is or becomes a direct or indirect subsidiary, the Board of Directors
shall not permit the Corporation to be a party to any transaction which would
not comply with the foregoing without the approval of at least fourteen (14)
directors.

   (11) Subsidiaries.

   The Board of Directors shall have the right, following consultation with the
COO or, if Mel Karmazin is the CEO, the CEO, with respect to any public company
which is a subsidiary of the Corporation, to take such steps as the Board of
Directors reasonably determines are necessary to implement corporate governance
arrangements applicable to such subsidiary in a manner as consistent as
practicable with the provisions contained in this Restated Certificate of
Incorporation; provided that any such steps shall not vest in the Board of
Directors greater power or provide the COO with fewer rights than those
provided for in this Restated Certificate of Incorporation.

                                      G-16
<PAGE>

                                   EXHIBIT B

                          Form of Agreement Under the
                                  Viacom Inc.
                    1997 Long-Term Management Incentive Plan
                        for the 1999 Stock Option Grant

   AGREEMENT, dated as of          , by and between Viacom Inc., a Delaware
corporation (the "Company"), and           (the "Participant"), with respect to
the 1999 grant of stock options under the Company's 1997 Long-Term Management
Incentive Plan, as amended (the "Plan").

   This Agreement, together with the Memorandum dated       and the agreements
delivered under the Plan in connection with each grant of stock options under
the Plan, constitutes the prospectus covering the shares of Class B Common
Stock subject to the Plan. The Participant can receive additional copies of his
or her Plan agreements and the Memorandum upon request to the Administrator,
Long-Term Incentive Plans, Viacom Inc., 1515 Broadway, New York, New York
10036.

                                  WITNESSETH:

   WHEREAS, the Participant is now employed by the Company or one of its
subsidiaries in a key capacity and the Company desires to reward the
Participant, in accordance with the terms hereof, for the Participant's
contributions to the financial success of the Company by awarding the
Participant stock options to purchase shares of Class B Common Stock;

   NOW, THEREFORE, in consideration of the covenants and agreements herein
contained, the parties hereto hereby agree as follows:

                                   ARTICLE I

                             Terms of Stock Options

   Section 1.1 Grant of Stock Options. Subject to the terms and conditions
contained herein and in the Plan, the terms of which are hereby incorporated by
reference, the Company hereby awards to the Participant, effective as of
          (the "Date of Grant"), a grant of stock options (the "Stock Options")
to purchase           shares of Class B Common Stock at an exercise price of
$       for each share (the "Exercise Price"). The capitalized terms used in
this Agreement which are not otherwise defined herein shall have the meanings
assigned to them in Article III hereof. The Stock Options granted hereunder are
not intended to be, or qualify as, "Incentive Stock Options" within the meaning
of Section 422 of the Code.

   Section 1.2 Terms of Stock Options.

   (a) Vesting. The Stock Options shall be exercisable only to the extent the
Participant is vested therein. The Stock Options shall vest in one-third
increments on        and          .

   (b) Option Period. Except as provided in Section 1.2(c) hereof, the period
during which the Stock Options may be exercised shall expire on the tenth
anniversary of the Date of Grant (the "Expiration Date").

   (c) Exercise in the Event of Termination of Employment, Retirement, Death or
Permanent Disability.

     (i) Termination other than for Cause, Retirement, Death or Permanent
  Disability. In the event that (A) the Participant ceases to be an employee
  of the Company or any of its subsidiaries by reason of the voluntary
  termination by the Participant or the termination by the Company or any of
  its subsidiaries other than for Cause, the Participant may exercise his or
  her Outstanding Stock Options to the extent then

                                      G-17
<PAGE>

  exercisable until the earlier of six months after the date of such
  termination (or such longer period, not in excess of the second anniversary
  of the Date of Grant of such Stock Options, as may be determined by the
  Committee, in its discretion) or the Expiration Date, (B) the Participant
  ceases to be an employee of the Company or any of its subsidiaries by
  reason of the Participant's Retirement, the Participant may exercise his or
  her Outstanding Stock Options to the extent then exercisable until the
  earlier of two years after such date or the Expiration Date, (C) the
  Participant dies during a period during which his or her Stock Options
  could have been exercised by him or her, his or her Outstanding Stock
  Options may be exercised to the extent exercisable at the date of death by
  the person who acquired the right to exercise such Stock Options by will or
  the laws of descent and distribution until the earlier of one year after
  such death (or such longer period as may be determined by the Committee, in
  its discretion, prior to the expiration of such one-year period) or the
  Expiration Date, or (D) the Permanent Disability of the Participant occurs,
  the Participant may exercise his or her Outstanding Stock Options to the
  extent exercisable upon the onset of such Permanent Disability until the
  earlier of one year after such date (or such longer period not in excess of
  two years after such date as may be determined by the Committee in its
  discretion) or the Expiration Date. Upon the occurrence of an event
  described in clauses (A), (B), (C) or (D) of this Section 1.2(c)(i), all
  rights with respect to Stock Options that are not vested as of such event
  will be relinquished.

     (ii) Termination for Cause. If the Participant's employment with the
  Company or any of its subsidiaries ends because of a Termination for Cause,
  all Outstanding Stock Options, whether or not then vested, shall terminate
  effective as of the date of such termination.

   Section 1.3 Exercise of Stock Options.

   (a) Whole or Partial Exercise. Subject to the restrictions of Section 1.2(b)
hereof, the Participant may exercise all vested Stock Options granted hereunder
at one time or in installments of 100 Stock Options (or in the whole number of
unexercised Stock Options in which the Participant is vested, if such number is
less than 100) by written notice to the Administrator, Long-Term Incentive
Plans, Viacom Inc., 1515 Broadway, New York, New York 10036. Such notice shall
(i) state the number of full Stock Options being exercised (ii) be signed by
the person or persons so exercising the Stock Options and, in the event the
Stock Options are being exercised (pursuant to Section 1.2(c)(i) hereof) by any
person or persons other than the Participant accompanied by proof satisfactory
to the Company's counsel of the right of such person or persons to exercise the
Stock Options, and (iii) be accompanied by full payment as set forth in Section
1.3(b) hereof.

   (b) Payment of Aggregate Option Price. The written notice of exercise
described above must be accompanied by full payment of the aggregate Exercise
Price which shall be determined by multiplying the number of Stock Options
being exercised by the Exercise Price. Such Exercise Price shall be paid in
cash (e.g. personal bank check, certified check or official bank check). In
addition, in accordance with Section 4.3 hereof, the Participant shall make an
arrangement acceptable to the Company to pay to the Company an amount
sufficient to satisfy the combined Federal, state and local withholding tax
obligations which arise in connection with the exercise of such Stock Options.

   (c) Issuance of Share Certificates. Upon satisfaction of the conditions set
forth in Section 1.3(b) hereof, the Company shall deliver (or cause to be
delivered) a certificate or certificates for the shares of Class B Common Stock
issued pursuant to the exercise of the Stock Options to the Participant.

                                   ARTICLE II

                      Effect of Certain Corporate Changes

   In the event of a merger, consolidation, stock split, dividend,
distribution, combination, reclassification or recapitalization that changes
the character or amount of the Class B Common Stock, the Committee shall make
such adjustments to the number of shares of Class B Common Stock subject to the
Stock Options or the exercise price of the Stock Options, in each case, as it
deems appropriate. Such determinations shall be conclusive and binding for all
purposes.

                                      G-18
<PAGE>

                                  ARTICLE III

                                  Definitions

   As used in this Agreement, the following terms shall have the following
meanings:

     (a) "Board" shall mean the Board of Directors of the Company.

     (b) "Class B Common Stock" shall mean shares of Class B Common Stock,
  par value $0.01 per share, of the Company.

     (c) "Code" shall mean the Internal Revenue Code of 1986, as amended,
  including any successor law thereto.

     (d) "Committee" shall mean the Senior Executive Compensation Committee
  of the Board (or such other Committee as may be appointed by the Board)
  except that (i) the number of directors on the Committee shall not be less
  than two and (ii) each member of the Committee shall be a "non-employee
  director" within the meaning of Rule 16b-3 under the Exchange Act.

     (e) "Exchange Act" shall mean the Securities Exchange Act of 1934, as
  amended, including any successor law thereto.

     (f) "Fair Market Value" of a share of Class B Common Stock on a given
  date shall be the closing price of a share of Class B Common Stock on the
  New York Stock Exchange or such other national securities exchange as may
  be designated by the Committee or, in the event that the Class B Common
  Stock is not listed for trading on a national securities exchange but is
  quoted on an automated quotation system, the average closing bid price per
  share of the Class B Common Stock on such automated quotation system or, in
  the event that the Class B Common Stock is not quoted on any such system,
  the average of the closing bid prices per share of the Class B Common Stock
  as furnished by a professional marketmaker making a market in the Class B
  Common Stock designated by the Committee.

     (g) "Outstanding Stock Option" shall mean a Stock Option granted to the
  Participant which has not yet been exercised and which has not yet expired
  in accordance with its terms.

     (h) "Permanent Disability" shall have the same meaning as such term or a
  similar term has in the long-term disability policy maintained by the
  Company or a subsidiary thereof for the Participant and in effect on the
  date of the onset of the Participant's Permanent Disability.

     (i) "Retirement" shall mean the resignation or termination of employment
  after attainment of an age and years of service required for payment of an
  immediate pension pursuant to the terms of any qualified retirement plan
  maintained by the Company or a subsidiary in which the Participant
  participates; provided, however, that no resignation or termination prior
  to a Participant's 60th birthday shall be deemed a retirement unless the
  Committee so determines in its sole discretion.

     (j) "Termination for Cause" shall mean a termination of employment with
  the Company or any of its subsidiaries which, as determined by the
  Committee, is by reason of (i) "cause" as such term or a similar term is
  defined in any employment agreement applicable to the Participant, or (ii)
  if there is no such employment agreement or if such employment agreement
  contains no such term, (x) dishonesty, conviction of a felony, or willful
  unauthorized disclosure of confidential information, (y) failure, neglect
  of or refusal by the Participant to substantially perform the duties of the
  Participant's employment, or (z) any other act or omission which is
  materially injurious to the financial condition or business reputation of
  the Company of any subsidiary thereof.

     (k) To "vest" a Stock Option held by the Participant shall mean to
  render such Stock Option exercisable, subject to the terms of the Plan,
  except where the Participant's employment ends because of a Termination for
  Cause.

                                      G-19
<PAGE>

                                   ARTICLE IV

                                 Miscellaneous

   Section 4.1 No Rights to Continued Employment. Neither this Agreement, the
Plan nor any action taken in accordance with such documents shall be construed
as giving the Participant any right to be retained by the Company or any of its
subsidiaries.

   Section 4.2 Restriction on Transfer. The rights of the Participant with
respect to the Stock Options shall not be transferable by the Participant
except (i) by will or the laws of descent and distribution or (ii) subject to
the prior approval of the Committee, for transfers to members of the
Participant's immediate family or trusts whose beneficiaries are members of the
Participant's immediate family, in each case subject to the condition that the
Committee shall be satisfied that such transfer is being made for estate and/or
tax planning purposes without consideration being received therefor and subject
to such other conditions as the Committee may impose.

   Section 4.3 Tax Withholding. As a condition to the exercise of the Stock
Options, the Participant shall make a payment (or an arrangement acceptable to
the Company for the withholding of such payment) sufficient to satisfy the
combined Federal, state and local withholding tax obligations which arise in
connection with the exercise of such Stock Options.

   Section 4.4 Stockholder Rights. The grant of Stock Options under this
Agreement shall not entitle the Participant or any permitted transferee to any
rights of a holder of shares of common stock of the Company, other than when
and until share certificates are delivered to the Participant upon exercise of
a Stock Option.

   Section 4.5 No Restriction on Right of Company to Effect Corporate
Changes. This Agreement shall not affect in any way the right or power of the
Company or its stockholders to make or authorize any or all adjustments,
recapitalization, reorganization or other changes in the Company's capital
structure or its business, or any merger or consolidation of the Company, or
any issue of stock or of options, warrants or rights to purchase stock or of
bonds, debentures, preferred or prior preference stocks whose rights are
superior to or affect the Class B Common Stock or the rights thereof or which
are convertible into or exchangeable for Class B Common Stock, or the
dissolution or liquidation of the Company, or any sale or transfer of all or
any part of its assets or business, or any other corporate act or proceeding,
whether of a similar character or otherwise.

   Section 4.6 Amendment. Other than as provided in Article II hereof, this
Agreement may not be modified, amended or waived in any manner except by an
instrument in writing signed by both parties hereto. The waiver by either party
of compliance with any provision of this Agreement by the other party shall not
operate or be construed as a waiver of any other provision of this Agreement,
or of any subsequent breach by such party of a provision of this Agreement.

   Section 4.7 Stockholder Approval. The grant of Stock Options under this
Agreement is subject to the approval of the stockholders of the Company, at the
next annual or special meeting of stockholders, to the extent that the number
of shares of Class B Common Stock subject to the Plan is insufficient to cover
the number of shares of Class B Common Stock subject to Stock Options awarded
under this Agreement.

   Section 4.8 Notices. Every notice or other communication relating to this
Agreement shall be in writing, and shall be mailed to or delivered to the party
for whom it is intended at such address as may from time to time be designated
by such party in a notice mailed or delivered to the other party as herein
provided. If no such address has been specified by the Participant, such
notices or communications shall be sent to the Participant's address as
specified in the records of the Company.

   Section 4.9 Headings. The headings of sections and subsections herein are
included solely for convenience of reference and shall not affect the meaning
of any of the provisions of this Agreement.

                                      G-20
<PAGE>

   Section 4.10 Receipt of Copy of Plan. By executing this Agreement, the
Participant acknowledges receipt of a copy of the Plan.

   Section 4.11 Governing Law. This Agreement and all rights hereunder shall be
construed in accordance with and governed by the laws of the State of Delaware.

                                          Viacom Inc.


                                          By: _________________________________
                                                  Senior Vice President,
                                                    Human Resources and
                                                      Administration


                                          _____________________________________
                                                        Participant

                                      G-21
<PAGE>

                                                                        Annex H

                                                              September 6, 1999

Board of Directors
Viacom Inc.
1515 Broadway
New York, NY 10036

Members of the Board:

   We understand that CBS Corporation ("CBS" or the "Company") and Viacom Inc.
("Viacom") have entered into an Agreement and Plan of Merger, dated as of
September 6, 1999 (the "Merger Agreement"), which provides, among other
things, for the merger of CBS with and into Viacom (the "Merger"). Pursuant to
the Merger, each issued and outstanding share of common stock, par value $1.00
per share, of CBS ("CBS Common Stock") shall be converted into the right to
receive 1.085 shares (the "Exchange Ratio") of Class B Common Stock, par value
$0.01 per share (the "Viacom Class B Common Stock") of Viacom. The terms and
conditions of the Merger are more fully set forth in the Merger Agreement.

   You have asked for our opinion as to whether the Exchange Ratio pursuant to
the Merger Agreement is fair from a financial point of view to Viacom.

   For purposes of the opinion set forth herein, we have:

     (i) reviewed certain publicly available financial statements and other
  information of CBS and Viacom, respectively;

     (ii) reviewed certain internal financial statements and other financial
  and operating data concerning CBS and Viacom prepared by the respective
  managements of CBS and Viacom;

     (iii) discussed the past and current operations and financial condition
  and the prospects of CBS and Viacom with senior executives of CBS and
  Viacom;

     (iv) analyzed certain internal financial statements and other financial
  operating data concerning CBS and Viacom prepared by the respective
  managements of CBS and Viacom;

     (v) discussed the past and current operations and financial condition
  and the prospects of Viacom with senior executives of Viacom including
  their estimates of the strategic and operational benefits of the Merger,
  and analyzed the pro forma impact of the Merger on Viacom's financial
  ratios;

     (vi) reviewed the reported prices and trading activity for the CBS
  Common Stock and the Viacom Class B Common Stock;

     (vii) compared the financial performance of CBS and Viacom and the
  prices and trading activity of CBS and Viacom with that of certain other
  comparable publicly-traded companies and their securities;

     (viii) participated in discussions and negotiations among
  representatives of CBS and Viacom and their financial and legal advisors;

     (ix) reviewed the Merger Agreement, the Voting Agreement dated as of
  September 6, 1999 between CBS and certain shareholders of Viacom and
  certain related documents; and

     (x) performed such other analyses and considered such other factors as
  we have deemed appropriate.

   We have assumed and relied upon without independent verification the
accuracy and completeness of the information reviewed by us for the purposes
of this opinion. With respect to the financial projections, including
information relating to certain strategic and operational benefits of the
Merger, we have assumed that they have been reasonably prepared on bases
reflecting the best currently available estimates and judgments of the future

                                      H-1
<PAGE>

financial performance of CBS and Viacom, respectively. We have not made any
independent valuation or appraisal of the assets or liabilities of CBS and
Viacom, nor have we been furnished with any such appraisals. We have assumed
that the Merger will be consummated in accordance with the terms set forth in
the Merger Agreement. Our opinion is necessarily based on economic, market and
other conditions as in effect on, and the information made available to us as
of, the date hereof.

   We have acted as financial advisor to the Board of Directors of Viacom in
connection with this transaction and will receive a fee for our services. In
the past, Morgan Stanley & Co. Incorporated and its affiliates have provided
financial advisory and financing services for CBS and Viacom and have received
fees for the rendering of these services. In the ordinary course of business,
Morgan Stanley may from time to time trade in the securities of CBS and Viacom
for its own account, the accounts of investment funds under the management of
Morgan Stanley and for the accounts of its customers and, accordingly, may at
any time hold a long or short position in such securities.

   It is understood that this letter is for the information of the Board of
Directors of Viacom and may not be used for any other purpose without our prior
written consent, except that this opinion may be included in its entirety in
any filing made by CBS or Viacom in respect of the Merger with the Securities
and Exchange Commission. In addition, this opinion does not in any manner
address the prices at which Viacom Class B Common Stock will trade following
the consummation of the Merger, and Morgan Stanley expresses no opinion or
recommendation as to how the stockholders of CBS and Viacom should vote at the
respective stockholders' meetings held in connection with the Merger.

   Based on and subject to the foregoing, we are of the opinion on the date
hereof that the Exchange Ratio pursuant to the Merger Agreement is fair from a
financial point of view to Viacom.

                                          Very truly yours,

                                          Morgan Stanley & Co. Incorporated

                                                    /s/ Paul J. Taubman
                                          By: _________________________________
                                                      Paul J. Taubman
                                                     Managing Director

                                      H-2
<PAGE>

                                                                         Annex I
                                                               September 6, 1999

Board of Directors
CBS Corporation
51 West 52nd Street
New York, NY 10019

Members of the Board of Directors:

   We understand that CBS Corporation ("CBS") has entered into an Agreement and
Plan of Merger dated as of September 6, 1999, by and between Viacom Inc.
("Viacom") and CBS (the "Merger Agreement"). Pursuant to the Merger Agreement,
CBS will merge with and into Viacom (the "Merger") and each outstanding share
of CBS Common Stock, par value $1.00 per share (the "CBS Common Stock"), will
be converted into the right to receive 1.085 shares of Viacom Class B Common
Stock, par value $0.01 per share ("Viacom Class B Common Stock"), with the
number of shares of Viacom Class B Common Stock to be received for each share
of CBS Common Stock being referred to herein as the exchange ratio (the
"Exchange Ratio").

   You have asked us for our opinion as to whether the Exchange Ratio is fair,
from a financial point of view, to the holders of CBS Common Stock.

   In connection with rendering our opinion, we have, among other things:

     (i) analyzed certain publicly available financial statements and other
  information relating to CBS and Viacom;

     (ii) analyzed certain internal financial statements and other non-public
  financial and operating data concerning CBS, which were prepared by and
  furnished to us or reviewed for us by the management of CBS, and concerning
  Viacom, which were prepared by and furnished to us or reviewed for us by
  the management of Viacom;

     (iii) analyzed certain financial projections concerning CBS, which were
  prepared by the management of CBS, and concerning Viacom, which were
  prepared by the management of Viacom;

     (iv) discussed the past and current operations and financial condition
  and the prospects of CBS with the management of CBS;

     (v) discussed the past and current operations and financial condition
  and the prospects of Viacom with the management of Viacom;

     (vi) reviewed the reported prices and trading activity of the CBS Common
  Stock and Viacom Class B Common Stock;

     (vii) compared the market valuation and financial performance of CBS and
  Viacom to that of certain other comparable publicly-traded companies;

     (viii) reviewed the financial terms to the extent available of certain
  comparable acquisition transactions;

     (ix) participated in discussions and negotiations among representatives
  of CBS, Viacom, and their financial and legal advisers;

     (x) reviewed the Merger Agreement and the related exhibits and schedules
  in the form provided to us and have assumed that the final form of such
  Merger Agreement, exhibits and schedules will not vary in any respect
  material to our analysis;

                                      I-1
<PAGE>

     (xi) reviewed certain information concerning cost savings and
  combination benefits ("Synergies") expected to result from the Merger that
  was provided to us or reviewed for us by the managements of CBS and Viacom;
  and

     (xii) performed such other analyses and examinations and considered such
  other factors as we have in our sole judgment deemed appropriate.

   For purposes of our analysis and opinion, we have assumed and relied,
without independent verification, upon the accuracy and completeness of the
information reviewed by us or reviewed for us for purposes of this opinion.
With respect to the financial projections of CBS and Viacom and the underlying
analysis concerning the potential Synergies which were furnished to us or
reviewed for us by the managements of CBS and Viacom, we have assumed that they
have been reasonably prepared on bases reflecting the best currently available
estimates and good faith judgments of the future competitive, operating and
regulatory environments and related financial performance of CBS and Viacom. We
have not made nor assumed any responsibility for making any independent
valuation or appraisal of the assets or liabilities of CBS or Viacom, nor have
we been furnished with any such appraisals. Our opinion is necessarily based on
economic, market and other conditions as in effect on, and the information and
Agreements made available to us as of, the date hereof. We have, with your
approval, assumed the Merger will qualify as a tax-free reorganization within
the meaning of Section 368 of the Internal Revenue Code of 1986, as amended.
Our opinion does not address CBS's underlying business decision to effect the
Merger nor constitute a recommendation to any CBS shareholder as to how such
holder should vote with respect to the Merger. Furthermore, we express no
opinion as to the price or range of prices at which the shares of Viacom Class
B Common Stock will trade subsequent to the consummation of the Merger.

   For purposes of rendering our opinion, we have assumed, in all respects
material to our analysis, that the representations and warranties of each party
contained in the Merger Agreement are true and correct, that each party will
perform all the covenants and agreements required under the Merger Agreement,
and that all conditions to the consummation of the Merger will be satisfied
without waiver thereof.

   We have acted as financial advisor to the Board of Directors of CBS in
connection with the Merger and will receive a fee for our services upon the
rendering of this opinion. In the past, Evercore Partners Inc. has provided
financial advisory services for CBS and has received fees for the rendering of
these services.

   It is understood that this letter and the opinion expressed herein is for
the information of the Board of Directors of CBS only and may not be quoted or
referred to or relied upon or used for any other purpose without our prior
written consent except as we and our affiliates have otherwise agreed with CBS
in writing.

   Based upon and subject to the foregoing, it is our opinion that, as of the
date hereof, the Exchange Ratio is fair, from a financial point of view, to the
holders of CBS Common Stock.

                                          Very truly yours,


                                          Evercore Group Inc.

                                                  /s/ David G. Offensend
                                          By: _________________________________
                                                    David G. Offensend
                                                       Vice Chairman

                                      I-2
<PAGE>

                                    PART II

                     INFORMATION NOT REQUIRED IN PROSPECTUS

ITEM 20. Indemnification of Officers And Directors

   Section 102(b)(7) of the Delaware General Corporation Law ("DGCL") allows a
corporation to include in its certificate of incorporation a provision
eliminating the personal liability of a director to the corporation or its
stockholders for monetary damages for breach of fiduciary duty as a director,
except in cases where the director breached his or her duty of loyalty to the
corporation or its stockholders, failed to act in good faith, engaged in
intentional misconduct or a knowing violation of the law, willfully or
negligently authorized the unlawful payment of a dividend or approved an
unlawful stock redemption or repurchase or obtained an improper personal
benefit. The registrant's Restated Certificate of Incorporation (the "Viacom
Charter") contain provisions that eliminates directors' personal liability, in
certain circumstances, as set forth above.

   Section 1 of Article VI of the Viacom Charter provides that the registrant
shall indemnify any person who was or is a party or is threatened to be made a
party to any threatened, pending or completed action, suit or proceeding,
whether civil, criminal, administrative or investigative (other than an action
by or in the right of the registrant) by reason of the fact that he or she is
or was a director, officer, employee or agent of the registrant, or is or was
serving at the request of the registrant as a director, officer, employee or
agent (including trustee) of another corporation, partnership, joint venture,
trust or other enterprise, against judgments, fines, amounts paid in settlement
and expenses (including attorneys' fees), actually and reasonably incurred by
him in connection with such action, suit or proceedings if he acted in good
faith and in a manner reasonably believed to be in or not opposed to the best
interests of the registrant, and with respect to any criminal action or
proceeding, had no reasonable cause to believe his conduct was unlawful. The
termination of any action, suit or proceeding by judgment, order, settlement,
conviction, or upon a plea of nolo contendere or its equivalent, shall not, of
itself, create a presumption that the person did not act in good faith and in a
manner which he reasonably believed to be in or not opposed to the best
interests of the registrant, and, with respect to any criminal action or
proceeding, had reasonable cause to believe that his conduct was unlawful.

   Section 2 of Article VI of the Viacom Charter provides that the registrant
shall indemnify any person who was or is a party or is threatened to be made a
party to any threatened, pending or completed action or suit by or in the right
of the registrant to procure a judgment in its favor by reason of the fact that
he or she is or was a director, officer, employee or agent of the registrant,
or is or was serving at the request of the registrant as a director, officer,
employee or agent of another corporation, partnership, joint venture, trust, or
other enterprise against expenses (including attorneys' fees) actually and
reasonably incurred by him or her in connection with the defense or settlement
of such action or suit if he acted in good faith and in a manner he reasonably
believed to be in or not opposed to the best interests of the registrant,
except that no indemnification shall be made in respect of any claim, issue or
matter as to which such person shall have been adjudged to be liable to the
registrant unless and only to the extent that the court in which such action or
suit was brought shall determine upon application that, despite the
adjudication of liability and in view of all of the circumstances of the case,
such person is fairly and reasonably entitled to indemnify for such expenses
which the court shall deem proper.

   Section 4 of Article VI of the Viacom Charter provides that any
indemnification made pursuant to the above provisions (unless ordered by a
court) shall be made by the registrant only as authorized in the specific case
upon a determination that indemnification of the present or former director,
officer, employee or agent is proper in the circumstances because he has met
the applicable standard of conduct as set forth above. Such determination shall
be made, with respect to a person who is a director or officer at the time of
such determination, (1) by a majority vote of the directors who are not parties
to such action, suit or proceedings, even though less than a quorum, or (2) by
a committee of such directors designated by a majority vote of such directors,
even though less than a quorum, or (3) if there are no such directors, or if
such directors so direct, by independent legal counsel in a written opinion, or
(4) by the stockholders of the registrant entitled to vote thereon.

                                      II-1
<PAGE>

   The Viacom Charter provides that to the extent that a present or former
director, officer, employee or agent of the registrant has been successful on
the merits or otherwise in defense of any action, suit or proceeding referred
above, or in defense of any claim, issue or matter therein, such person shall
be indemnified against expenses (including attorneys' fees) actually and
reasonably incurred by that person in connection therewith. The indemnification
and advancement of expenses provided by, or granted pursuant to, the
indemnification provisions of the Viacom Charter shall not be deemed exclusive
of any other rights to which a person seeking indemnification or advancement of
expenses may be entitled under any statute, by-law, agreement, vote of
stockholders or disinterested directors or otherwise, both as to action in that
person's official capacity and as to action in another capacity while holding
such office. Without limiting the foregoing, the registrant is authorized to
enter into an agreement with any director, officer, employee or agent of the
registrant providing indemnification for such person against expenses,
including attorneys' fees, judgments, fines and amounts paid in settlement that
result from any threatened pending or completed actions, suit, or proceeding,
whether civil, criminal, administrative or investigative, including any action
by or in the right of the registrant, that arises by reason of the fact that
such person is or was a director, officer, employee or agent of the registrant,
or is or was serving at the request of the registrant as a director, officer,
employee or agent of another corporation, partnership, joint venture, trust or
other enterprise, to the full extent allowed by law, except that no such
agreement shall provide for indemnification for any actions that constitute
fraud, actual dishonesty or willful misconduct.

   The registrant may purchase and maintain insurance on behalf of any person
who is or was a director, officer, employee or agent of the registrant, or is
or was serving at the request of the registrant as a director, officer,
employee or agent of another corporation, partnership, joint venture, trust or
other enterprise against any liability asserted against him and incurred by him
in any such capacity, or arising out of his status as such, whether or not the
registrant would have the power to indemnify him against such liability under
the provisions of Article VI of the Viacom Charter.

   Pursuant to Section 7 of Article VI of the Viacom Charter, the registrant
has purchased certain liability insurance for its officers and directors as
permitted by Section 145(g) of the DGCL.

ITEM 21. Exhibits and Financial Statement Schedules

   (a) The following documents are exhibits to the Registration Statement.

<TABLE>
<CAPTION>
 Exhibit
 Number                          Description of Document
 -------                         -----------------------
 <C>     <S>
 *2.1    Agreement and Plan of Merger, dated as of September 6, 1999, as
         amended and restated as of October 8, 1999 and as of November . ,
         1999, among Viacom Inc., CBS Corporation and Viacom/CBS LLC (attached
         as Annex A to the Joint Proxy Statement/Prospectus**)

 *3.1    Restated Certificate of Incorporation of Viacom Inc. (attached as
         Annex B to the Joint Proxy Statement/Prospectus**)

 *3.2    By-laws of Viacom Inc. (attached as Annex C to the Joint Proxy
         Statement/Prospectus**)

  4.1    Specimen certificate representing Viacom Inc. Class B Non-Voting
         Common Stock (incorporated by reference to Exhibit 4(a) to the
         Quarterly Report on Form 10-Q of Viacom Inc. for the quarter ended
         June 30, 1990) (File No. 1-9553)

  5.1    Opinion of Michael D. Fricklas, Senior Vice President, General Counsel
         and Secretary of Viacom Inc., as to the legality of the securities
         being registered

  8.1    Opinion of Paul, Weiss, Rifkind, Wharton & Garrison as to the material
         United States federal income tax consequences of the Merger

  8.2    Opinion of Cravath Swaine & Moore as to the material United States
         federal income tax consequences of the Merger
</TABLE>


                                      II-2
<PAGE>

<TABLE>
<CAPTION>
 Exhibit
 Number                          Description of Document
 -------                         -----------------------
 <C>     <S>
 *10.1   Voting Agreement, dated September 6, 1999, between National
         Amusements, Inc. and CBS Corporation (attached as Annex D to the Joint
         Proxy Statement/Prospectus**)

 *10.2   Stockholder Agreement, dated September 6, 1999, between National
         Amusements, Inc. and CBS Corporation (attached as Annex E to the Joint
         Proxy Statement/Prospectus**)

 *10.3   Employment Letter Agreement, dated as of September 6, 1999, between
         Viacom Inc. and Sumner Redstone (attached as Annex F to the Joint
         Proxy Statement/Prospectus**)

 *10.4   Employment Letter Agreement, dated as of September 6, 1999, between
         Viacom Inc. and Mel Karmazin (attached as Annex G to the Joint Proxy
         Statement/Prospectus**)

  10.5   Agreement, dated as of September 6, 1999, between Viacom Inc. and
         Philippe Dauman (incorporated by reference to the Report on Form 8-K
         filed by Viacom Inc. on September 7, 1999)

  10.6   Agreement, dated as of September 6, 1999, between Viacom Inc. and
         Thomas Dooley (incorporated by reference to the Report on Form 8-K
         filed by Viacom Inc. on September 7, 1999)

  10.7   Viacom Inc. 1989 Long-Term Management Incentive Plan (as amended and
         restated through April 23, 1990, as further amended and restated
         through April 27, 1995, and as further amended and restated through
         November 1, 1996) (incorporated by reference to Exhibit 10(a) to the
         Annual Report on Form 10-K of Viacom Inc. for the fiscal year ended
         December 31, 1996) (File No. 1-9553)

  10.8   Viacom Inc. 1994 Long-Term Management Incentive Plan (as amended and
         restated through April 27, 1995 and as further amended and restated
         through November 1, 1996) (incorporated by reference to Exhibit 10(b)
         to the Annual Report on Form 10-K of Viacom Inc. for the fiscal year
         ended December 31, 1996) (File No. 1-9553)

  10.9   Viacom Inc. 1997 Long-Term Management Incentive Plan (as amended July
         29, 1999 and as further amended September 6, 1999)

  10.10  Viacom Inc. Senior Executive Short-Term Incentive Plan (as amended and
         restated through March 27, 1996 and as further amended and restated
         through March 18, 1999) (incorporated by reference to Exhibit B to the
         Definitive Proxy Statement filed by Viacom Inc. on April 10, 1999)

  10.11  Viacom Inc. Long-Term Incentive Plan (Divisional) (incorporated by
         reference to Exhibit 10.2 to the Quarterly Report on Form 10-Q of
         Viacom Inc. for the quarter ended June 30, 1993) (File No. 1-9553)

  10.12  Viacom International Inc. Deferred Compensation Plan for Non-Employee
         Directors (as amended and restated through December 17, 1992)
         (incorporated by reference to Exhibit 10(e) to the Annual Report on
         Form 10-K of Viacom Inc. for the fiscal year ended December 31, 1992,
         as amended by Form 10-K/A Amendment No. 1 dated November 29, 1993 and
         as further amended by Form 10-K/A Amendment No. 2 dated December 9,
         1993) (File No. 1-9553)

  10.13  Viacom Inc. and Viacom International Inc. Retirement Income Plan for
         Non-Employee Directors (incorporated by reference to Exhibit 10(f) to
         the Annual Report on Form 10-K of Viacom Inc., for the fiscal year
         ended December 31, 1989) (File No. 1-9553)

  10.14  Viacom Inc. Stock Option Plan for Outside Directors (incorporated by
         reference to Exhibit 10.2 to the Quarterly Report on Form 10-Q of
         Viacom Inc. for the quarter ended June 30, 1993) (File No. 1-9553)

  10.15  Viacom Inc. 1994 Stock Option Plan for Outside Directors (incorporated
         by reference to Exhibit B to Viacom Inc.'s Definitive Proxy Statement
         dated April 28, 1995)

  10.16  Viacom Inc. Excess Investment Plan (incorporated by reference to
         Exhibit 4.1 to the Viacom Inc. Registration Statement on Form S-8)
         (File No. 1-9553)
</TABLE>


                                      II-3
<PAGE>

<TABLE>
<CAPTION>
 Exhibit
 Number                         Description of Document
 -------                        -----------------------
 <C>     <S>
 10.17   Excess Pension Plan for Certain Key Employees of Viacom International
         Inc. (incorporated by reference to Exhibit 10(i) to the Annual Report
         on Form 10-K of Viacom Inc. for the fiscal year ended December 31,
         1990) (File No. 1-9553)

 10.18   Agreement, dated as of January 1, 1996, between Viacom Inc. and
         Michael D. Fricklas, as amended by an Agreement dated March 31, 1998,
         and as further amended by an Agreement dated October 12, 1998
         (incorporated by reference to Exhibit 10(n) to the Annual Report on
         Form 10-K of Viacom Inc. for the fiscal year ended December 31, 1998)

 10.19   Agreement, dated as of April 1, 1995, between Viacom Inc. and George
         S. Smith, Jr., as amended by an Agreement dated as of March 30, 1998
         (incorporated by reference to Exhibit 10(o) to the Annual Report on
         Form 10-K of Viacom Inc. for the fiscal year ended December 31, 1997)
         (File No. 1-9553)

 10.20   Service Agreement, dated as of March 1, 1994, between George S.
         Abrams and Viacom Inc. (incorporated by reference to Exhibit 10(q) to
         the Annual Report on Form 10-K of Viacom Inc. for the fiscal year
         ended December 31, 1994) (File No. 1-9553)

 10.21   Viacom Inc. Executive Severance Plan for Senior Vice Presidents

 10.22   Blockbuster Entertainment Corporation ("BEC") stock option plans
         assumed by Viacom Inc. after the Blockbuster Merger consisting of the
         following:

         (i) BEC's 1989 Stock Option Plan (incorporated by reference to BEC's
             Proxy Statement dated March 31, 1989)

         (ii) Amendments to BEC's 1989 Stock Option Plan (incorporated by
              reference to BEC's Proxy Statement dated April 3, 1991)

         (iii) BEC's 1990 Stock Option Plan (incorporated by reference to
               BEC's Proxy Statement dated March 29, 1990)

         (iv) Amendments to BEC's 1990 Stock Option Plan (incorporated by
              reference to BEC's Proxy Statement dated April 15, 1991)

         (v) BEC's 1991 Employee Director Stock Option Plan (incorporated by
             reference to BEC's Proxy Statement dated April 15, 1991)

         (vi) BEC's 1991 Non-Employee Director Stock Option Plan (incorporated
              by reference to BEC's Proxy Statement dated April 15, 1991)

         (vii) BEC's 1994 Stock Option Plan (incorporated by reference to
               Exhibit 10.35 to the Annual Report on Form 10-K of BEC for the
               fiscal year ended December 31, 1993) (File No. 0-12700)

 10.23   Parents Agreement dated as of July 24, 1995 among Viacom Inc., Tele-
         Communications, Inc. and TCI Communications, Inc. (incorporated by
         reference to Exhibit 10.1 to the Registration Statement on Form S-4
         filed by Viacom International Inc.) (File No. 33-64467)

 10.24   Implementation Agreement dated as of July 24, 1995 between Viacom
         International Inc. and Viacom International Services Inc.
         (incorporated by reference to Exhibit 10.2 to the Registration
         Statement on Form S-4 filed by Viacom International Inc.) (File No.
         33-64467)

 10.25   Subscription Agreement dated as of July 24, 1995 among Viacom
         International Inc., Tele-Communications, Inc. and TCI Communications,
         Inc. (incorporated by reference to Exhibit 10.3 to the Registration
         Statement on Form S-4 filed by Viacom International Inc.) (File No.
         33-64467)

 10.26   Stock Purchase Agreement, dated as of February 16, 1997, between
         Viacom International Inc. and Evergreen Media Corporation of Los
         Angeles (incorporated by reference to Exhibit 10(u) to the Annual
         Report on Form 10-K of Viacom Inc. for the fiscal year ended December
         31, 1996) (File No. 1-9553)
</TABLE>


                                      II-4
<PAGE>

<TABLE>
<CAPTION>
 Exhibit
 Number                          Description of Document
 -------                         -----------------------
 <C>     <S>
  10.27  Stock Purchase Agreement, dated as of May 17, 1998, among Viacom
         International Inc., Pearson Inc., and Pearson plc (incorporated by
         reference to Exhibit 10.1 to the Quarterly Report on Form 10-Q of
         Viacom Inc. for the quarter ended June 30, 1998) (File No. 1-9553), as
         amended by Amendment No. 1 dated as of November 25, 1998 (filed
         herewith)

  10.28  Agreement and Plan of Merger among Viacom International Inc., VSEG
         Acquisition Inc. and Spelling Entertainment Group Inc., dated as of
         May 17, 1999 (incorporated by reference to the report filed on Form 8-
         K by Viacom Inc. on May 18, 1999)

  10.29  Amendment No. 3, dated as of May 21, 1999, to the Amended and Restated
         Credit Agreement, dated as of March 26, 1997, as amended, among Viacom
         Inc., the Bank parties thereto from time to time, The Bank of New
         York, as a Managing Agent and as the Documentation Agent, Citibank,
         N.A., as a Managing Agent and as the Administrative Agent, Morgan
         Guaranty Trust Company of New York, as a Managing Agent, Bank of
         America NT&SA, as a Managing Agent, The Chase Manhattan Bank, as a
         Managing Agent, JP Morgan Securities Inc., as a Syndication Agent,
         Bancamerica Robertson Stephens (formerly known as Bancamerica
         Securities, Inc.), as Syndication Agent, the Banks identified as
         Agents on the signature pages thereof, as Agents, and the Banks
         identified as Co-Agents on the signature pages thereof, as Co-Agents
         (incorporated by reference to Exhibit 10.1 to the Quarterly Report
         filed on Form 10-Q of Viacom Inc. for the quarter ended March 31,
         1999)

  10.30  Amendment No. 1, dated as of May 21, 1999, to the Amended and Restated
         VII Credit Agreement, dated as of March 26, 1997, among Viacom
         International Inc., the Bank parties thereto from time to time, The
         Bank of New York, as a Managing Agent and as the Documentation Agent,
         Citibank, N.A., as a Managing Agent and as the Administrative Agent,
         Morgan Guaranty Trust Company of New York, as a Managing Agent, Bank
         of America NT&SA, as a Managing Agent, The Chase Manhattan Bank, as a
         Managing Agent, JP Morgan Securities Inc., as a Syndication Agent,
         Bancamerica Robertson Stephens (formerly known as Bancamerica
         Securities, Inc.), as Syndication Agent, the Banks identified as
         Agents on the signature pages thereof, as Agents, and the Banks
         identified as Co-Agents on the signature pages thereof, as Co-Agents
         (incorporated by reference to Exhibit 10.2 to the Quarterly Report
         filed on Form 10-Q of Viacom Inc. for the quarter ended March 31,
         1999)

  21.1   Subsidiaries of Viacom Inc. (incorporated by reference to Exhibit 21
         to the Annual Report on Form 10-K of Viacom Inc. for the fiscal year
         ended December 31, 1998) (File No. 1-9553)

 *23.1   Consent of PricewaterhouseCoopers LLP

 *23.2   Consent of KPMG LLP

 *23.3   Consent of Arthur Andersen

  23.4   Consent of Michael D. Fricklas, Senior Vice President, General Counsel
         and Secretary of Viacom Inc. (included in its opinion in Exhibit 9.1)

  23.5   Consent of Cravath, Swaine & Moore (included in its opinion in Exhibit
         8.2)

  23.6   Consent of Paul, Weiss, Rifkind, Wharton & Garrison (included in its
         opinion in Exhibit 8.1)

 *23.7   Consent of Morgan Stanley & Co. Incorporated

 *23.8   Consent of Evercore Group Inc.

 *24.1   Powers of Attorney

 *99.1   Form of consent card for the Shareholders of Viacom Inc.

 *99.2   Form of proxy card for the Special Meeting of Shareholders CBS
         Corporation
</TABLE>


                                      II-5
<PAGE>

<TABLE>
<CAPTION>
 Exhibit
 Number                          Description of Document
 -------                         -----------------------
 <C>     <S>
 *99.3   Form of Chairman Letter to the Shareholders of Viacom Inc.

 *99.4   Form of Chairman Letter to the Shareholders of CBS Corporation

 *99.5   Form of Notice of Consent Solicitation of Shareholders of Viacom Inc.

 *99.6   Form of Notice of Special Meeting of Shareholders of CBS Corporation

 *99.7   Opinion of Morgan Stanley & Co. Incorporated (attached as Annex H to
         the Joint Proxy Statement/Prospectus)

 *99.8   Opinion of Evercore Group Inc. (attached as Annex I to the Joint Proxy
         Statement/Prospectus)
</TABLE>
- --------
 * Filed herewith.
** Schedules referred to in the Agreement and Plan of Merger are omitted from
   this filing. The Registrant agrees to furnish supplementally a copy of any
   omitted schedule to the Commission upon request, in accordance with Item
   601(b)(2) of Regulation S-K.

   (b) Not applicable.

   (c) The respective opinions of Morgan Stanley & Co. Incorporated and
Evercore Group Inc. are included as Annex H and Annex I, respectively, to this
joint proxy statement/prospectus which is part of this registration statement.

ITEM 22. Undertakings

   (a) The undersigned registrant hereby undertakes that, for purposes of
determining any liability under the Securities Act, each filing of the
registrant's annual report pursuant to section 13(a) or section 15(d) of the
Exchange Act (and, where applicable, each filing of an employee benefit plan's
annual report pursuant to section 15(d) of the Exchange Act) that is
incorporated by reference in the registration statement shall be deemed to be a
new registration statement relating to the securities offered therein, and the
offering of such securities at that time shall be deemed to be the initial bona
fide offering thereof.

  (b) (1) The undersigned registrant hereby undertakes as follows: that prior
       to any public reoffering of the securities registered hereunder
       through use of a prospectus which is a part of this registration
       statement, by any person or party who is deemed to be an underwriter
       within the meaning of Rule 145(c), the issuer undertakes that such
       reoffering prospectus will contain the information called for by the
       applicable registration form with respect to reofferings by persons
       who may be deemed underwriters, in addition to the information called
       for by the other items of the applicable form.

  (2) The registrant undertakes that every prospectus (i) that is filed
     pursuant to the paragraph immediately preceding, or (ii) that purports
     to meet the requirements of section 10(a)(3) of the Securities Act and
     is used in connection with an offering of securities subject to Rule
     415, will be filed as a part of an amendment to the registration
     statement and will not be used until such amendment is effective, and
     that, for purposes of determining any liability under the Securities
     Act, each such post-effective amendment shall be deemed to be a new
     registration statement relating to the securities offered therein, and
     the offering of such securities at that time shall be deemed to be the
     initial bona fide offering thereof.

   (c) Insofar as indemnification for liabilities arising under the Securities
Act of 1933 may be permitted to directors, officers and controlling persons of
the registrant pursuant to the foregoing provisions, or otherwise, the
registrant has been advised that in the opinion of the SEC such indemnification
is against public policy as expressed in the Securities Act and is, therefore,
unenforceable. In the event that a claim for indemnification against such
liabilities (other than the payment by the registrant of expenses incurred or
paid by a director,

                                      II-6
<PAGE>

officer or controlling person of the registrant in the successful defense of
any action, suit or proceeding) is asserted by such director, officer or
controlling person in connection with the securities being registered, the
registrant will, unless in the opinion of its counsel the matter has been
settled by controlling precedent, submit to a court of appropriate jurisdiction
the question whether such indemnification by it is against public policy as
expressed in the Securities Act and will be governed by the final adjudication
of such issue.

   (d) The undersigned registrant hereby undertakes to respond to requests for
information that is incorporated by reference into the Joint Proxy
Statement/Prospectus pursuant to Item 4, 10(b), 11, or 13 of this Form S-4,
within one business day of receipt of such request, and to send the
incorporated documents by first class mail or other equally prompt means. This
includes information contained in documents filed subsequent to the effective
date of the registration statement through the date of responding to the
request.

   (e) The undersigned registrant hereby undertakes to supply by means of a
post-effective amendment all information concerning a transaction, and the
company being acquired involved therein, that was not the subject of and
included in the registration statement when it became effective.

                                      II-7
<PAGE>

                           SIGNATURES OF VIACOM INC.

   Pursuant to the requirements of the Securities Act of 1933, the registrant
has duly caused this Amendment No. 1 to the Registration Statement to be signed
on its behalf by the undersigned, thereunto duly authorized, in the County of
New York, State of New York, on this 10th day of November, 1999.

                                          Viacom Inc.

                                                 /s/ Sumner M. Redstone
                                          By: _________________________________
                                                     Sumner M. Redstone
                                                  Chief Executive Officer

   Pursuant to the requirements of the Securities Act of 1933, this Amendment
No. 1 to the Registration Statement has been signed by the following persons in
the capacities and on the dates indicated.

<TABLE>
<CAPTION>
              Signature                          Title                   Date
              ---------                          -----                   ----

<S>                                    <C>                        <C>
      /s/ Sumner M. Redstone           Chairman of the Board of    November 10, 1999
______________________________________  Directors, Chief
          Sumner M. Redstone            Executive Officer and
                                        Director (Principal
                                        Executive Officer)

     /s/ George S. Smith, Jr.          Senior Vice President and   November 10, 1999
______________________________________  Chief Financial Officer
         George S. Smith, Jr.           (Principal Financial
                                        Officer)

       /s/ Susan C. Gordon             Vice President, Controller  November 10, 1999
______________________________________  and Chief Accounting
           Susan C. Gordon              Officer (Principal
                                        Accounting Officer)

                  *                    Director
______________________________________
           George S. Abrams

                  *                    Director
______________________________________
          Philippe P. Dauman

                  *                    Director
______________________________________
           Thomas E. Dooley

                  *                    Director
______________________________________
              Ken Miller

                  *                    Director
______________________________________
          Brent D. Redstone

                  *                    Director
______________________________________
            Shari Redstone

                  *                    Director
______________________________________
         Frederic V. Salerno

                  *                    Director
______________________________________
           William Schwartz

                  *                    Director
______________________________________
           Ivan Seidenberg

     /s/ Michael D. Fricklas                                       November 10, 1999
*By __________________________________
         Michael D. Fricklas
           Attorney-in-Fact
</TABLE>

                                      II-8
<PAGE>


                               EXHIBIT INDEX

<TABLE>
<CAPTION>
 Exhibit
 Number                          Description of Document
 -------                         -----------------------
 <C>     <S>
  *2.1   Agreement and Plan of Merger, dated as of September 6, as amended and
         restated as of October 8, 1999 and as of November  . , 1999, among
         Viacom Inc., CBS Corporation and Viacom/CBS LLC (attached as Annex A
         to the Joint Proxy Statement/Prospectus**)

  *3.1   Restated Certificate of Incorporation of Viacom Inc. (attached as
         Annex B to the Joint Proxy Statement/Prospectus**)

  *3.2   By-laws of Viacom Inc. (attached as Annex C to the Joint Proxy
         Statement/Prospectus**)

   4.1   Specimen certificate representing Viacom Inc. Class B Non-Voting
         Common Stock (incorporated by reference to Exhibit 4(a) to the
         Quarterly Report on Form 10-Q of Viacom Inc. for the quarter ended
         June 30, 1990) (File No. 1-9553)

   5.1   Opinion of Michael D. Fricklas, Senior Vice President, General Counsel
         and Secretary of Viacom Inc., as to the legality of the securities
         being registered

   8.1   Opinion of Paul, Weiss, Rifkind, Wharton & Garrison as to the material
         United States federal income tax consequences of the Merger

   8.2   Opinion of Cravath Swaine & Moore as to the material United States
         federal income tax consequences of the Merger

 *10.1   Voting Agreement, dated September 6, 1999, between National
         Amusements, Inc. and CBS Corporation (attached as Annex D to the Joint
         Proxy Statement/Prospectus**)

 *10.2   Stockholder Agreement, dated September 6, 1999, between National
         Amusements, Inc. and CBS Corporation (attached as Annex E to the Joint
         Proxy Statement/Prospectus**)

 *10.3   Employment Letter Agreement, dated as of September 6, 1999, between
         Viacom Inc. and Sumner Redstone (attached as Annex F to the Joint
         Proxy Statement/Prospectus**)

 *10.4   Employment Letter Agreement, dated as of September 6, 1999, between
         Viacom Inc. and Mel Karmazin (attached as Annex G to the Joint Proxy
         Statement/Prospectus**)

  10.5   Agreement, dated as of September 6, 1999, between Viacom Inc. and
         Philippe Dauman (incorporated by reference to the Report on Form 8-K
         filed by Viacom Inc. on September 7, 1999)

  10.6   Agreement, dated as of September 6, 1999, between Viacom Inc. and
         Thomas Dooley (incorporated by reference to the Report on Form 8-K
         filed by Viacom Inc. on September 7, 1999)

  10.7   Viacom Inc. 1989 Long-Term Management Incentive Plan (as amended and
         restated through April 23, 1990, as further amended and restated
         through April 27, 1995, and as further amended and restated through
         November 1, 1996) (incorporated by reference to Exhibit 10(a) to the
         Annual Report on Form 10-K of Viacom Inc. for the fiscal year ended
         December 31, 1996) (File No. 1-9553)

  10.8   Viacom Inc. 1994 Long-Term Management Incentive Plan (as amended and
         restated through April 27, 1995 and as further amended and restated
         through November 1, 1996) (incorporated by reference to Exhibit 10(b)
         to the Annual Report on Form 10-K of Viacom Inc. for the fiscal year
         ended December 31, 1996) (File No. 1-9553)

  10.9   Viacom Inc. 1997 Long-Term Management Incentive Plan (as amended on
         July 29, 1999 and as further amended on September 6, 1999)

  10.10  Viacom Inc. Senior Executive Short-Term Incentive Plan (as amended and
         restated through March 27, 1996 and as further amended and restated
         through March 18, 1999) (incorporated by reference to Exhibit B to the
         Definitive Proxy Statement filed by Viacom Inc. on April 10, 1999)

  10.11  Viacom Inc. Long-Term Incentive Plan (Divisional) (incorporated by
         reference to Exhibit 10.2 to the Quarterly Report on Form 10-Q of
         Viacom Inc. for the quarter ended June 30, 1993) (File No. 1-9553)
</TABLE>

<PAGE>

<TABLE>
<CAPTION>
 Exhibit
 Number                         Description of Document
 -------                        -----------------------
 <C>     <S>
 10.12   Viacom International Inc. Deferred Compensation Plan for Non-Employee
         Directors (as amended and restated through December 17, 1992)
         (incorporated by reference to Exhibit 10(e) to the Annual Report on
         Form 10-K of Viacom Inc. for the fiscal year ended December 31, 1992,
         as amended by Form 10-K/A Amendment No. 1 dated November 29, 1993 and
         as further amended by Form 10-K/A Amendment No. 2 dated December 9,
         1993) (File No. 1-9553)

 10.13   Viacom Inc. and Viacom International Inc. Retirement Income Plan for
         Non-Employee Directors (incorporated by reference to Exhibit 10(f) to
         the Annual Report on Form 10-K of Viacom Inc., for the fiscal year
         ended December 31, 1989) (File No. 1-9553)

 10.14   Viacom Inc. Stock Option Plan for Outside Directors (incorporated by
         reference to Exhibit 10.2 to the Quarterly Report on Form 10-Q of
         Viacom Inc. for the quarter ended June 30, 1993) (File No. 1-9553)

 10.15   Viacom Inc. 1994 Stock Option Plan for Outside Directors
         (incorporated by reference to Exhibit B to Viacom Inc.'s Definitive
         Proxy Statement dated April 28, 1995)

 10.16   Viacom Inc. Excess Investment Plan (incorporated by reference to
         Exhibit 4.1 to the Viacom Inc. Registration Statement on Form S-8)
         (File No. 1-9553)

 10.17   Excess Pension Plan for Certain Key Employees of Viacom International
         Inc. (incorporated by reference to Exhibit 10(i) to the Annual Report
         on Form 10-K of Viacom Inc. for the fiscal year ended December 31,
         1990) (File No. 1-9553)

 10.18   Agreement, dated as of January 1, 1996, between Viacom Inc. and
         Michael D. Fricklas, as amended by an Agreement dated March 31, 1998,
         and as further amended by an Agreement dated October 12, 1998
         (incorporated by reference to Exhibit 10(n) to the Annual Report on
         Form 10-K of Viacom Inc. for the fiscal year ended December 31, 1998)

 10.19   Agreement, dated as of April 1, 1995, between Viacom Inc. and George
         S. Smith, Jr., as amended by an Agreement dated as of March 30, 1998
         (incorporated by reference to Exhibit 10(o) to the Annual Report on
         Form 10-K of Viacom Inc. for the fiscal year ended December 31, 1997)
         (File No. 1-9553)

 10.20   Service Agreement, dated as of March 1, 1994, between George S.
         Abrams and Viacom Inc. (incorporated by reference to Exhibit 10(q) to
         the Annual Report on Form 10-K of Viacom Inc. for the fiscal year
         ended December 31, 1994) (File No. 1-9553)

 10.21   Viacom Inc. Executive Severance Plan for Senior Vice Presidents

 10.22   Blockbuster Entertainment Corporation ("BEC") stock option plans
         assumed by Viacom Inc. after the Blockbuster Merger consisting of the
         following:

         (i) BEC's 1989 Stock Option Plan (incorporated by reference to BEC's
             Proxy Statement dated March 31, 1989)

         (ii) Amendments to BEC's 1989 Stock Option Plan (incorporated by
              reference to BEC's Proxy Statement dated April 3, 1991)

         (iii) BEC's 1990 Stock Option Plan (incorporated by reference to
               BEC's Proxy Statement dated March 29, 1990)

         (iv) Amendments to BEC's 1990 Stock Option Plan (incorporated by
              reference to BEC's Proxy Statement dated April 15, 1991)

         (v) BEC's 1991 Employee Director Stock Option Plan (incorporated by
             reference to BEC's Proxy Statement dated April 15, 1991)

         (vi) BEC's 1991 Non-Employee Director Stock Option Plan (incorporated
              by reference to BEC's Proxy Statement dated April 15, 1991)

         (vii) BEC's 1994 Stock Option Plan (incorporated by reference to
               Exhibit 10.35 to the Annual Report on Form 10-K of BEC for the
               fiscal year ended December 31, 1993) (File No. 0-12700)
</TABLE>

<PAGE>

<TABLE>
<CAPTION>
 Exhibit
 Number                          Description of Document
 -------                         -----------------------
 <C>     <S>
  10.23  Parents Agreement dated as of July 24, 1995 among Viacom Inc., Tele-
         Communications, Inc. and TCI Communications, Inc. (incorporated by
         reference to Exhibit 10.1 to the Registration Statement on Form S-4
         filed by Viacom International Inc.) (File No. 33-64467)

  10.24  Implementation Agreement dated as of July 24, 1995 between Viacom
         International Inc. and Viacom International Services Inc.
         (incorporated by reference to Exhibit 10.2 to the Registration
         Statement on Form S-4 filed by Viacom International Inc.) (File No.
         33-64467)

  10.25  Subscription Agreement dated as of July 24, 1995 among Viacom
         International Inc., Tele-Communications, Inc. and TCI Communications,
         Inc. (incorporated by reference to Exhibit 10.3 to the Registration
         Statement on Form S-4 filed by Viacom International Inc.) (File No.
         33-64467)

  10.26  Stock Purchase Agreement, dated as of February 16, 1997, between
         Viacom International Inc. and Evergreen Media Corporation of Los
         Angeles (incorporated by reference to Exhibit 10(u) to the Annual
         Report on Form 10-K of Viacom Inc. for the fiscal year ended December
         31, 1996) (File No. 1-9553)

  10.27  Stock Purchase Agreement, dated as of May 17, 1998, among Viacom
         International Inc., Pearson Inc., and Pearson plc (incorporated by
         reference to Exhibit 10.1 to the Quarterly Report on Form 10-Q of
         Viacom Inc. for the quarter ended June 30, 1998) (File No. 1-9553), as
         amended by Amendment No. 1 dated as of November 25, 1998 (filed
         herewith)

  10.28  Agreement and Plan of Merger among Viacom International Inc., VSEG
         Acquisition Inc. and Spelling Entertainment Group Inc., dated as of
         May 17, 1999 (incorporated by reference to the report filed on Form 8-
         K by Viacom Inc. on May 18, 1999)

  10.29  Amendment No. 3, dated as of May 21, 1999, to the Amended and Restated
         Credit Agreement, dated as of March 26, 1997, as amended, among Viacom
         Inc., the Bank parties thereto from time to time, The Bank of New
         York, as a Managing Agent and as the Documentation Agent, Citibank,
         N.A., as a Managing Agent and as the Administrative Agent, Morgan
         Guaranty Trust Company of New York, as a Managing Agent, Bank of
         America NT&SA, as a Managing Agent, The Chase Manhattan Bank, as a
         Managing Agent, JP Morgan Securities Inc., as a Syndication Agent,
         Bancamerica Robertson Stephens (formerly known as Bancamerica
         Securities, Inc.), as Syndication Agent, the Banks identified as
         Agents on the signature pages thereof, as Agents, and the Banks
         identified as Co-Agents on the signature pages thereof, as Co-Agents
         (incorporated by reference to Exhibit 10.1 to the Quarterly Report
         filed on Form 10-Q of Viacom Inc. for the quarter ended March 31,
         1999)

  10.30  Amendment No. 1, dated as of May 21, 1999, to the Amended and Restated
         VII Credit Agreement, dated as of March 26, 1997, among Viacom
         International Inc., the Bank parties thereto from time to time, The
         Bank of New York, as a Managing Agent and as the Documentation Agent,
         Citibank, N.A., as a Managing Agent and as the Administrative Agent,
         Morgan Guaranty Trust Company of New York, as a Managing Agent, Bank
         of America NT&SA, as a Managing Agent, The Chase Manhattan Bank, as a
         Managing Agent, JP Morgan Securities Inc., as a Syndication Agent,
         Bancamerica Robertson Stephens (formerly known as Bancamerica
         Securities, Inc.), as Syndication Agent, the Banks identified as
         Agents on the signature pages thereof, as Agents, and the Banks
         identified as Co-Agents on the signature pages thereof, as Co-Agents
         (incorporated by reference to Exhibit 10.2 to the Quarterly Report
         filed on Form 10-Q of Viacom Inc. for the quarter ended March 31,
         1999)

  21.1   Subsidiaries of Viacom Inc. (incorporated by reference to Exhibit 21
         to the Annual Report on Form 10-K of Viacom Inc. for the fiscal year
         ended December 31, 1998) (File No. 1-9553)

 *23.1   Consent of PricewaterhouseCoopers LLP

 *23.2   Consent of KPMG LLP

 *23.3   Consent of Arthur Andersen
</TABLE>

<PAGE>

<TABLE>
<CAPTION>
 Exhibit
 Number                          Description of Document
 -------                         -----------------------
 <C>     <S>
  23.4   Consent of Michael D. Fricklas, Senior Vice President, General Counsel
         and Secretary of Viacom Inc. (included in its opinion in Exhibit 9.1)

  23.5   Consent of Cravath, Swaine & Moore (included in its opinion in Exhibit
         8.2)

  23.6   Consent of Paul, Weiss, Rifkind, Wharton & Garrison (included in its
         opinion in Exhibit 8.1)

 *23.7   Consent of Morgan Stanley & Co. Incorporated

 *23.8   Consent of Evercore Group Inc.

 *24.1   Powers of Attorney

 *99.1   Form of consent card for the Shareholders of Viacom Inc.

 *99.2   Form of proxy card for the Special Meeting of Shareholders of CBS
         Corporation

 *99.3   Form of Chairman Letter to the Shareholders of Viacom Inc.

 *99.4   Form of Chairman Letter to the Shareholders of CBS Corporation

 *99.5   Form of Notice of Consent Solicitation of Shareholders of Viacom Inc.

 *99.6   Form of Notice of Special Meeting of Shareholders of CBS Corporation

 *99.7   Opinion of Morgan Stanley & Co. Incorporated (attached as Annex H to
         the Joint Proxy Statement/Prospectus)

 *99.8   Opinion of Evercore Group Inc. (attached as Annex I to the Joint Proxy
         Statement/Prospectus)
</TABLE>
- --------
 * Filed herewith.
** Schedules referred to in the Agreement and Plan of Merger are omitted from
   this filing. The Registrant agrees to furnish supplementally a copy of any
   omitted schedule to the Commission upon request, in accordance with Item
   601(b)(2) of Regulation S-K.


<PAGE>

                                                                    EXHIBIT 23.1

PricewaterhouseCoopers

                                        PricewaterhouseCoopers LLP
                                        1301 Avenue of the Americas
                                        New York NY 10019-6013
                                        Telephone (212) 259 1000
                                        Facsimile (212) 259 1301

                       Consent of Independent Accountants

   We hereby consent to the incorporation by reference in this Registration
Statement on Form S-4 of Viacom Inc. of our report dated February 8, 1999,
except for the first paragraph of Note 2, which is as of February 25, 1999,
relating to the financial statements and financial statement schedule appearing
in Viacom Inc.'s Annual Report on Form 10-K for the year ended December 31,
1998. We also consent to the reference to us under the heading "Experts" in
such Registration Statement.

                                        /s/ PricewaterhouseCoopers LLP

New York, New York

November 10, 1999




<PAGE>

                                                                    EXHIBIT 23.2

                        CONSENT OF INDEPENDENT AUDITORS

   We consent to the use of our report dated January 27, 1999, appearing on
page 21 of CBS Corporation's Form 10-K/A and page 55 of CBS Corporation's Form
10-K for the year ended December 31, 1998, incorporated by reference in this
Proxy Statement/Prospectus of Viacom Inc., and the reference to our firm under
the heading "Experts" in this Proxy Statement/Prospectus.

                                          /s/ KPMG LLP

New York, New York

November 10, 1999

<PAGE>

                                                                    EXHIBIT 23.3

                   CONSENT OF INDEPENDENT PUBLIC ACCOUNTANTS

   As independent public accountants, we hereby consent to the incorporation by
reference in this registration statement on Form S-4 dated October 7, 1999 of
our report dated October 16, 1998 included in King World Productions, Inc.'s
Annual Report on Form 10-K for the year ended August 31, 1998 and to all
references to our Firm included in this registration statement.

                                          /s/ Arthur Andersen LLP

New York, New York

November 10, 1999


<PAGE>

                                                                    EXHIBIT 23.7



                                        November 10, 1999



Viacom Inc.
1515 Broadway
New York, NY 10026

Dear Sirs or Mesdames:

We hereby consent to the inclusion in Amendment No. 1 to the Registration
Statement on Form S-4, dated November 10, 1999, relating to the proposed merger
of CBS Corporation with and into Viacom Inc., of our opinion letter appearing as
Annex H to the Joint Proxy Statement/Prospectus which is a part of the
Registration Statement, and to the references to our firm name therein.  In
giving such consent, we do not thereby admit that we come within the category of
persons whose consent is required under Section 7 of the Securities Act of 1933,
as amended (the "Securities Act"), or the rules and regulations adopted by the
Securities and Exchange Commission (the "Commission") thereunder, nor do we
admit that we are experts with respect to any part of such Registration
Statement within the meaning of the term "experts" as used in the Securities Act
or the rules and regulations of the Commission thereunder.

                                        Very truly yours,

                                        MORGAN STANLEY & CO. INCORPORATED

                                        By:     /s/ Paul J. Taubman
                                            ---------------------------
                                            Paul J. Taubman
                                            Managing Director

<PAGE>

                                                                    EXHIBIT 23.8

                         CONSENT OF EVERCORE GROUP INC.

Board of Directors
CBS Corporation
51 West 52nd Street
New York, New York 10019

   We hereby consent to the inclusion of our opinion letter, dated as of
September 6, 1999, to the Board of Directors of CBS Corporation ("CBS") as
Annex I to the Joint Proxy Statement/Prospectus which forms a part of the
Registration Statement on Form S-4 relating to the proposed merger of CBS and
Viacom Inc. and to the references therein to Evercore Group Inc. and Evercore
Partners Inc. under the captions "Summary--Fairness Opinions of Financial
Advisors," "The Merger--Background to the Merger," "The Merger--Reason for the
Merger and Board Recommendations," and "The Merger--Opinions of Financial
Advisors." In giving such consent, we do not admit that we come within the
category of persons whose consent is required under Section 7 of the Securities
Act of 1933, as amended, or the rules and regulations of the Securities and
Exchange Commission thereunder, not do we thereby admit that we are experts
with respect to any part of such Registration Statement within the meaning of
the term "experts" as used in the Securities Act, as amended, or the rules and
regulations of the Securities and Exchange Commission thereunder.

                                          Evercore Group Inc.

                                          By: [Signature appears here]
                                             __________________________________

New York, New York
September 30, 1999

<PAGE>

                                                                    EXHIBIT 24.1

                               POWER OF ATTORNEY

   The undersigned Directors of Viacom Inc. (the "Company") hereby constitute
and appoint Michael D. Fricklas and Philippe P. Dauman, each in an individual
capacity, as true and lawful attorneys-in-fact for the undersigned, with full
power of substitution and resubstitution, for and in the name, place and stead
of the undersigned, to sign and file with the Securities and Exchange
Commission (the "Commission") under the Securities Act of 1933, as amended (the
"Securities Act"), the Company's Registration Statement on Form S-4 relating to
the proposed merger with CBS Corporation and any and all amendments (including
post-effective amendments) and exhibits thereto with the Commission, any
related registration statement and its amendments and exhibits filed pursuant
to Rule 462(b) under the Securities Act and any and all applications and other
documents to be filed with the Commission pertaining to the registration of the
securities covered thereby or under any related registration statement or any
amendment thereto, with full power and authority to do and perform each and
every act and thing requisite and necessary or desirable, hereby ratifying and
confirming all that such attorney-in-fact or its substitute shall lawfully do
or cause to be done by virtue hereof.
<TABLE>
<CAPTION>
Signature                                         Title                     Date
- ---------                                         -----                     ----
<S>                                         <C>                      <C>
           /s/ George S. Abrams                     Director            October 4, 1999
___________________________________________
             George S. Abrams
          /s/ Philippe P. Dauman                    Director            October 4, 1999
___________________________________________
            Philippe P. Dauman
           /s/ Thomas E. Dooley                     Director            October 4, 1999
___________________________________________
             Thomas E. Dooley
              /s/ Ken Miller                        Director            October 4, 1999
___________________________________________
                Ken Miller
           /s/ Brent D. Redstone                    Director            October 4, 1999
___________________________________________
             Brent D. Redstone
            /s/ Shari Redstone                      Director            October 4, 1999
___________________________________________
              Shari Redstone
          /s/ Sumner M. Redstone                    Director            October 4, 1999
___________________________________________
            Sumner M. Redstone
          /s/ Frederic V. Salerno                   Director            October 4, 1999
___________________________________________
            Frederic V. Salerno
           /s/ William Schwartz                     Director            October 4, 1999
___________________________________________
             William Schwartz
            /s/ Ivan Seidenberg                     Director            October 4, 1999
___________________________________________
              Ivan Seidenberg
</TABLE>

<PAGE>

                                                                    EXHIBIT 99.1

                          Preliminary Proxy Materials

                                  VIACOM INC.
                                 1515 Broadway
                            New York, New York 10036

                                     PROXY

                           Special Meeting Proxy Card

   The undersigned hereby appoints SUMNER M. REDSTONE and PHILIPPE P. DAUMAN,
and each of them, as proxies, with full power of substitution, to represent and
to vote on behalf of the undersigned all of the shares of Class A Common Stock
of Viacom Inc. which the undersigned is entitled to vote at the Special Meeting
of Stockholders to be held at the            , New York, New York, at      a.m.
(E.S.T.) on        , 1999, and at any adjournments or postponements thereof,
upon the matters set forth on the reverse side as more fully described in the
Joint Proxy Statement/Prospectus furnished herewith.

   THIS PROXY IS SOLICITED ON BEHALF OF THE BOARD OF DIRECTORS OF VIACOM INC.
THIS PROXY WHEN PROPERLY EXECUTED WILL BE VOTED IN THE MANNER DIRECTED HEREIN
BY THE UNDERSIGNED STOCKHOLDER.

   You are encouraged to specify your choices by marking the appropriate boxes,
but you need not mark any boxes if you wish to vote in accordance with the
Board of Directors' recommendation.

   The proxies are directed to vote as specified on the reverse side hereof and
in their discretion on all other matters. The Board of Directors recommends a
vote FOR Proposal (1). Unless otherwise specified, the vote represented by this
proxy will be cast FOR Proposal (1).

(Continued, and to be signed and dated on the reverse side.)

                                  VIACOM INC.
                                 P.O. BOX 11033
                            NEW YORK, NY 10203-0033
<PAGE>

                                 PROXY--VIACOM

1. Approval of the adoption of the Agreement and Plan of Merger, dated
   September 6, 1999, between Viacom Inc. and CBS Corporation.

                     FOR [_]    AGAINST [_]    ABSTAIN [_]

2. In their discretion, the Proxies are authorized to vote upon such other
   business as may properly come before the meeting.

   If you plan to attend the Special Meeting, please check this box and an
admission ticket will be sent to you. [_]

   Please sign exactly as your name(s) appear hereon. When shares are held by
joint tenants, both should sign. When signing as attorney, executor,
administrator, trustee or guardian, please give full title as such. If a
corporation, please sign in full corporate name by President or other
authorized officer. If a partnership, please sign in partnership name by
authorized person.

Dated:_________________________, 1999

SIGNED_______________________________

(PLEASE SIGN, DATE AND RETURN THIS PROXY IN THE ENCLOSED POSTAGE PREPAID
ENVELOPE.)

CHANGE OF ADDRESS AND/OR COMMENTS MARK HERE [_]

VOTES MUST BE INDICATED (X) IN BLACK OR BLUE INK. [_]

<PAGE>


                                                               Exhibit 99.2

                          Preliminary Proxy Materials

                                CBS CORPORATION

        Proxy solicited by the Board of Directors for Special Meeting of
                          Shareholders,         , 1999
         (See Joint Proxy Statement/Prospectus for discussion of item.)

   The undersigned appoints     ,      and     , and each of them, jointly and
severally, as proxies, with power of substitution, to vote all shares of CBS
Corporation common stock which the undersigned is entitled to vote on all
matters which may properly come before the Special Meeting of Shareholders of
CBS Corporation to be held at          on       , 1999, beginning at     a.m.
eastern standard time, or any adjournment thereof, including upon matters set
forth in the Notice of Special Meeting dated       , 1999, and the related
joint proxy statement/prospectus, copies of which have been received by the
undersigned, and in their discretion upon any adjournment of the meeting.
Attendance of the undersigned at the meeting or any adjourned session of the
meeting will not be deemed to revoke this proxy unless the undersigned
affirmatively indicates the intention of the undersigned to vote the shares
represented by this proxy in person before the exercise of this proxy.

                                          (change of address)

                                          -------------------------------------

                                          -------------------------------------

                                          -------------------------------------

                                          -------------------------------------
                                          If you have written in the above
                                          space, please mark the corresponding
                                          box on the reverse side of this
                                          card.

                                CBS CORPORATION
                                P. O. BOX 11004
                           NEW YORK, N.Y. 10203-0004

   You are encouraged to specify your choices by marking the appropriate boxes
on the reverse side. The proxies cannot vote your shares unless you sign and
return this proxy card.

(Continued, and to be signed and dated, on the reverse side.)
<PAGE>

(continued from other side)

                          PRELIMINARY PROXY MATERIALS

                             DETACH PROXY CARD HERE

- --------------------------------------------------------------------------------
              THE BOARD OF DIRECTORS RECOMMENDS A VOTE FOR ITEM 1.
- --------------------------------------------------------------------------------

1. To adopt the Agreement and Plan of Merger, dated as of September 6, 1999,
   between CBS Corporation and Viacom Inc., a Delaware corporation.

                       FOR [_]  AGAINST [_]  ABSTAIN [_]

   The shares represented by this Proxy Card will be voted as specified above,
but if no specification is made they will be voted FOR Item 1 and at the
discretion of the proxies on any other matter that may properly come before the
meeting.

   Please sign, date and return promptly in the accompanying envelope.

Note: Please sign exactly as name appears hereon. Joint owners should each
     sign. When signing as attorney, director, administrator, trustee or
     guardian, give full name and title as such.

- --------------------------------------------------------------------------------
                          Signature of Share Owner(s)

- --------------------------------------------------------------------------------
                          Signature of Share Owner(s)

Dated: ___________________________________________________________________, 1999

Votes MUST be indicated (x) in black or blue ink. [_]

   To change your address, mark this box and correct on reverse side.

                                      [_]

   If you plan to attend the Special Meeting, please check this box.

                                      [_]

<PAGE>

++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
+                                                                              +
+The information in this prospectus is not complete and may be changed. We may +
+not sell these securities until the registration statement filed with the     +
+Securities and Exchange Commission is effective. This prospectus is not an    +
+offer to sell these securities and it is not soliciting an offer to buy these +
+securities in any state where the offer or sale is not permitted.             +
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

               PRELIMINARY PROXY STATEMENT--SUBJECT TO COMPLETION

                                     [LOGO]

                                  VIACOM INC.
                                 1515 Broadway
                            New York, New York 10036

                                                           November ., 1999

Dear Viacom Shareholder,

  As you no doubt have heard, Viacom and CBS have agreed to a merger which will
create what we believe will be the leading global company in the production,
promotion and distribution of entertainment, news, sports and music. The new
company, which will retain the Viacom name, will be the largest seller of
advertising across the media landscape, with extraordinary assets in broadcast
and cable television, a leading radio and outdoor media company, a preeminent
motion picture studio, a world-class consumer publishing group, a leading
regional theme park operation and a growing portfolio of Internet ventures.
This merger advances the vision we share with CBS of building the preeminent
global media and entertainment company. The new Viacom will have exceptional
content and a portfolio of some of the world's most powerful brands.

  Viacom is soliciting your consents in connection with this merger.

  Under the terms of the merger, holders of CBS common stock will have the
right to receive 1.085 shares of Viacom Class B common stock for each share of
CBS common stock that they own and holders of CBS Series B preferred stock will
have the right to receive 1.085 shares of newly created Viacom Series C
preferred stock for each share of CBS Series B preferred stock that they own.
Both Viacom Class A and Class B common stock and CBS common stock are primarily
traded on the New York Stock Exchange.

  National Amusements, Inc., which owns approximately 68% of Viacom's Class A
common stock, has agreed to consent to the merger and the other proposals
described in this joint proxy statement/prospectus. Therefore, approval of
these proposals by the shareholders of Viacom is assured.


  If you hold Viacom Class A common stock, please complete, sign, date and mail
your signed written consent form in the enclosed return envelope. Approval of
these matters by Viacom's shareholders will occur when the holders of a
majority of the outstanding Viacom Class A common stock deliver dated and
properly executed consents to Viacom. National Amusements is expected to
deliver its consent at 12:00 noon, New York City time, on ., 1999. Therefore,
for your consent to comply, we must receive it, dated and properly executed, no
later than 12:00 noon, New York City time, on ., 1999. You may revoke your
written consent in the manner described in this document at any time prior to
the time that sufficient consents are delivered to Viacom.

  Detailed information concerning the merger, the merger agreement, related
agreements, Viacom's proposed new Restated Certificate of Incorporation and
other important information is contained in the attached joint proxy
statement/prospectus and its annexes. Please read this information carefully.


                                 Sincerely,

                                 Sumner M. Redstone

                                 Chairman and Chief Executive Officer

  For a discussion of risk factors which you should consider in evaluating the
merger, see "Risk Factors" beginning on page ..

   Neither the Securities and Exchange Commission nor
 any state securities commission has approved or
 disapproved of the securities to be issued in the
 merger or determined whether this joint proxy
 statement/prospectus is truthful or complete. Any
 representation to the contrary is a criminal
 offense.

  This joint proxy statement/prospectus is dated ., 1999, and is first being
mailed to shareholders on or about ., 1999.

<PAGE>

++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
+                                                                              +
+The information in this prospectus is not complete and may be changed. We may +
+not sell these securities until the registration statement filed with the     +
+Securities and Exchange Commission is effective. This prospectus is not an    +
+offer to sell these securities and it is not soliciting an offer to buy these +
+securities in any state where the offer or sale is not permitted.             +
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
               PRELIMINARY PROXY STATEMENT--SUBJECT TO COMPLETION

                                     [LOGO]

                                CBS CORPORATION
                              51 West 52nd Street
                            New York, New York 10019

                                                           November ., 1999

Dear CBS Shareholder,

  You are cordially invited to attend a special meeting of shareholders of CBS
Corporation to be held on ., 1999 at ., New York, New York, commencing at .
a.m., eastern standard time.

  At the special meeting, you will be asked to consider and vote upon a
proposal to adopt the Agreement and Plan of Merger, dated as of September 6,
1999, as amended and restated as of October 8, 1999 and as of November ., 1999,
among CBS, Viacom Inc. and Viacom/CBS LLC, which provides for the merger of CBS
and Viacom or, under specified circumstances, a wholly owned subsidiary of
Viacom. Under the terms of the merger agreement, each issued and outstanding
share of CBS common stock will be converted into the right to receive 1.085
shares of Viacom non-voting Class B common stock and each issued and
outstanding share of CBS Series B preferred stock will be converted into the
right to receive 1.085 shares of Viacom Series C preferred stock. Both Viacom's
Class B common stock and CBS' common stock are listed and traded on the New
York Stock Exchange.

  The merger agreement advances the vision we share with Viacom of building the
preeminent global media and entertainment company. The combination of our
companies, our powerful brands and our highly complementary businesses will
create a company we believe is uniquely qualified to capitalize on new
opportunities domestically and around the world.

  Your participation in the special meeting, in person or by proxy, is
important. Even if you anticipate attending in person, we urge you to mark,
sign and return the enclosed proxy card promptly in the enclosed postage-paid
envelope to ensure that your shares of CBS common stock and CBS Series B
preferred stock will be represented at the special meeting. If you do attend in
person, you will be entitled to vote your shares in person.

  The joint proxy statement/prospectus that accompanies this letter contains
information about Viacom and CBS and describes in detail the merger and related
matters. Attached to the joint proxy statement/ prospectus is a copy of the
merger agreement, related agreements and other important information.

  Thank you, and we look forward to seeing you at the special meeting.

                               Very truly yours,

    David T. McLaughlin                        Mel Karmazin
                                  President and Chief Executive Officer
Chairman of the Board

  For a discussion of risk factors which you should consider in evaluating the
merger, see "Risk Factors" beginning on page ..

   Neither the Securities and Exchange Commission nor any state securities
 commission has approved or disapproved of the securities to be issued in the
 merger or determined whether this joint proxy statement/prospectus is
 truthful or complete. Any representation to the contrary is a criminal
 offense.


   This joint proxy statement/prospectus is dated ., 1999, and is first being
 mailed to shareholders on or about ., 1999.

<PAGE>

               PRELIMINARY PROXY STATEMENT--SUBJECT TO COMPLETION

                                     [LOGO]

                                  VIACOM INC.
                                 1515 Broadway
                            New York, New York 10036

                      NOTICE OF CONSENT SOLICITATION
                               To Be Held ., 1999

To the Shareholders of Viacom:

   The enclosed materials seek your consent in connection with the Agreement
and Plan of Merger, dated as of September 6, 1999, as amended and restated as
of October 8, 1999 and November  , 1999, among Viacom, CBS Corporation, a
Pennsylvania corporation, and Viacom/CBS LLC, a Delaware limited liability
company, a copy of which is attached as Annex A to the joint proxy
statement/prospectus that accompanies this notice. The merger agreement
provides for the merger of CBS with and into Viacom (or, under specified
circumstances, a wholly owned subsidiary of Viacom), the issuance of shares of
Viacom Class B common stock, par value $.01 per share, and shares of Viacom
Series C preferred stock, par value $.01 per share, in the merger and the
adoption of the proposed new Restated Certificate of Incorporation for Viacom.
If the merger agreement is adopted and the merger is consummated, each issued
and outstanding share of CBS common stock, par value $1.00 per share, will be
converted into the right to receive 1.085 shares of Viacom Class B common stock
and each issued and outstanding share of CBS Series B preferred stock, par
value $1.00 per share, will be converted into the right to receive 1.085 shares
of Viacom Series C preferred stock, par value $.01 per share.

   Viacom's Class A shareholders are requested to take action by written
consent to approve all of the following:

    1. if the merger is structured as a merger of CBS into Viacom, the
       adoption of the merger agreement;

    2. if the merger is structured as a merger of CBS into Viacom/CBS LLC,
       the adoption of the proposed new Restated Certificate of
       Incorporation of Viacom;

    3. if the merger is structured as a merger of CBS into Viacom/CBS LLC,
       the issuance of up to

       .shares of Viacom Class B common stock to the holders of CBS common
    stock and up to

       .shares of Viacom Series C preferred stock to the holders of CBS
    Series B preferred stock in the merger, in accordance with the terms
    set forth in the merger agreement; and

    4. the amendment to increase the number of shares of Viacom Class B
       common stock authorized to be issued under the Viacom incentive plan
       by an additional 10 million shares.

   Holders of record of Viacom Class A common stock at the close of business on
November ., 1999 will be entitled to take action by written consent concerning
the proposals.

   The Board of Directors of Viacom has declared that the merger agreement is
advisable and has unanimously approved the merger agreement and unanimously
recommends that shareholders approve the adoption of the merger agreement. The
Board of Directors of Viacom has also unanimously approved the issuance of
Viacom Class B common stock and Viacom Series C preferred stock in connection
with the merger and declared advisable and approved the proposed new Restated
Certificate of Incorporation, and unanimously recommends that you approve the
issuance of Viacom Class B common stock and Viacom Series C preferred stock in
connection with the merger and to the adoption of the proposed new Restated
Certificate of Incorporation. In addition, the Board of Directors has approved
the amendment to increase the number of shares of Viacom Class B common stock
authorized to be issued under the Viacom incentive plan and unanimously
recommends that you approve the amendment.
<PAGE>

   Detailed information concerning the merger, the merger agreement, related
agreements, Viacom's proposed new Restated Certificate of Incorporation and
other important information is contained in the attached joint proxy
statement/prospectus and its annexes. Please read this information carefully.


   If you hold Viacom Class A common stock, please complete, sign, date and
mail your signed written consent form in the enclosed return envelope. Approval
of these matters by Viacom's shareholders will occur when the holders of a
majority of the outstanding Viacom Class A common stock deliver dated and
properly executed consents to Viacom. National Amusements is expected to
deliver its consent at 12:00 noon, New York City time, on ., 1999. Therefore,
for your consent to comply, we must receive it, dated and properly executed, no
later than 12:00 noon, New York City time, on ., 1999. You may revoke your
written consent in the manner described in this document at any time prior to
the time that sufficient consents are delivered to Viacom.

                                          By Order of the Board of Directors,

                                          Michael D. Fricklas
                                          Secretary

November ., 1999

                        YOUR CONSENT IS IMPORTANT.

           PLEASE COMPLETE, SIGN, DATE AND RETURN YOUR CONSENT.

<PAGE>

              PRELIMINARY PROXY STATEMENT -- SUBJECT TO COMPLETION

                                     [LOGO]

                                CBS CORPORATION

                            51 West 52nd Street

                         New York, New York 10019

                   NOTICE OF SPECIAL MEETING OF SHAREHOLDERS
                               To Be Held ., 1999

To the Shareholders of CBS:

   A special meeting of shareholders of CBS Corporation, a Pennsylvania
corporation, will be held on ., 1999 at ., a.m., eastern standard time, at .,
New York, New York to consider and vote upon a proposal to adopt the Agreement
and Plan of Merger, dated as of September 6, 1999, as amended and restated as
of October 8, 1999 and as of November ., 1999, among CBS, Viacom Inc., a
Delaware corporation, and Viacom/CBS LLC, a Delaware limited liability company,
a copy of which is attached as Annex A to the joint proxy statement/prospectus
that accompanies this notice. The merger agreement provides for the merger of
CBS with and into Viacom or, under specified circumstances, a wholly owned
subsidiary of Viacom. If the merger agreement is adopted and the merger is
consummated each issued and outstanding share of CBS common stock, par value
$1.00 per share, will be converted into the right to receive 1.085 shares of
Viacom non-voting Class B common stock, par value $.01 per share and each
issued and outstanding share of CBS Series B preferred stock, par value $1.00
per share, will be converted into the right to receive 1.085 shares of Viacom
Series C preferred stock, par value $.01 per share.

   Holders of record of CBS common stock and CBS Series B preferred stock at
the close of business on November 17, 1999, will be entitled to vote at the
special meeting or any adjournments or postponements of the special meeting.

   The Board of Directors of CBS has determined that the merger is in the best
interests of CBS, has unanimously approved the merger and the merger agreement
and unanimously recommends that shareholders vote to adopt the merger
agreement.

   Detailed information concerning the merger, the merger agreement, related
agreements and other related matters is contained in the attached joint proxy
statement/prospectus and its annexes. Please read this information carefully.

   The vote of each CBS shareholder is important. We urge you to mark, sign and
return your proxy card promptly in the enclosed postage-paid envelope to ensure
that your shares of CBS common stock and CBS Series B preferred stock will be
represented at the special meeting. If you attend the special meeting in
person, you will be entitled to vote your shares in person.
<PAGE>


   If you plan to attend the special meeting, please keep the admission ticket
that is attached to your proxy card, and also check the appropriate box on your
proxy card. Shareholders who own shares through banks or brokers and who plan
to attend must send a written notification, along with proof of ownership, such
as a bank or brokerage firm account statement, to the Secretary's Office, CBS
Corporation, 51 West 52nd Street, New York, New York 10019. The names of those
shareholders indicating they plan to attend will be placed on an admission list
held at the entrance to the meeting. Admission tickets will not be mailed in
advance of the meeting.

                                          On behalf of the Board of Directors,

                                          Angeline C. Straka

                                          Secretary
                                          New York, New York

                            YOUR VOTE IS IMPORTANT.
               PLEASE COMPLETE, SIGN, DATE AND RETURN YOUR PROXY.

       HOLDERS OF CBS COMMON STOCK AND CBS SERIES B PREFERRED STOCK
           SHOULD NOT SEND STOCK CERTIFICATES WITH THEIR PROXY CARDS.

                                       2


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