<PAGE>
Exhibit 24
BUCA, INC.
POWER OF ATTORNEY OF DIRECTOR AND/OR OFFICER
--------------------------------------------
KNOW ALL MEN BY THESE PRESENTS, that the undersigned director and/or
officer of BUCA, Inc., a Minnesota corporation, does hereby make, constitute and
appoint Joseph P. Micatrotto and Greg A. Gadel, and each or any of them, the
undersigned's true and lawful attorneys-in-fact, with full power of substitution
and resubstitution for the undersigned in the undersigned's name, place and
stead, to sign and affix the undersigned's name as such director and/or officer
of said Company to the Registration Statement or Registration Statements on Form
S-8 relating to the 2000 Stock Incentive Plan of BUCA, Inc. and Affiliated
Companies and all amendments (including post-effective amendments) thereto, to
be filed by said Company with the Securities and Exchange Commission, and to
file the same, with all exhibits thereto and other supporting documents, with
said Commission, granting unto said attorneys-in-fact, and each of them, full
power and authority to do and perform any and all acts necessary or incidental
to the performance and execution of the power herein expressly granted, as fully
to all intents and purposes as the undersigned might or could do in person,
hereby ratifying and confirming all that said attorneys-in-fact, or either of
them, or any of their substitutes, may lawfully do or cause to be done by virtue
hereof.
IN WITNESS WHEREOF, the undersigned has hereunto set the undersigned's
hand this 9th day of August, 2000.
/s/ David Yarnell
----------------------------
David Yarnell
<PAGE>
BUCA, INC.
POWER OF ATTORNEY OF DIRECTOR AND/OR OFFICER
--------------------------------------------
KNOW ALL MEN BY THESE PRESENTS, that the undersigned director and/or
officer of BUCA, Inc., a Minnesota corporation, does hereby make, constitute and
appoint Joseph P. Micatrotto and Greg A. Gadel, and each or any of them, the
undersigned's true and lawful attorneys-in-fact, with full power of substitution
and resubstitution for the undersigned in the undersigned's name, place and
stead, to sign and affix the undersigned's name as such director and/or officer
of said Company to the Registration Statement or Registration Statements on Form
S-8 relating to the 2000 Stock Incentive Plan of BUCA, Inc. and Affiliated
Companies and all amendments (including post-effective amendments) thereto, to
be filed by said Company with the Securities and Exchange Commission, and to
file the same, with all exhibits thereto and other supporting documents, with
said Commission, granting unto said attorneys-in-fact, and each of them, full
power and authority to do and perform any and all acts necessary or incidental
to the performance and execution of the power herein expressly granted, as fully
to all intents and purposes as the undersigned might or could do in person,
hereby ratifying and confirming all that said attorneys-in-fact, or either of
them, or any of their substitutes, may lawfully do or cause to be done by virtue
hereof.
IN WITNESS WHEREOF, the undersigned has hereunto set the undersigned's
hand this 7th day of August, 2000.
/s/ Don W. Hays
--------------------------
Don W. Hays
<PAGE>
BUCA, INC.
POWER OF ATTORNEY OF DIRECTOR AND/OR OFFICER
--------------------------------------------
KNOW ALL MEN BY THESE PRESENTS, that the undersigned director and/or
officer of BUCA, Inc., a Minnesota corporation, does hereby make, constitute and
appoint Joseph P. Micatrotto and Greg A. Gadel, and each or any of them, the
undersigned's true and lawful attorneys-in-fact, with full power of substitution
and resubstitution for the undersigned in the undersigned's name, place and
stead, to sign and affix the undersigned's name as such director and/or officer
of said Company to the Registration Statement or Registration Statements on Form
S-8 relating to the 2000 Stock Incentive Plan of BUCA, Inc. and Affiliated
Companies and all amendments (including post-effective amendments) thereto, to
be filed by said Company with the Securities and Exchange Commission, and to
file the same, with all exhibits thereto and other supporting documents, with
said Commission, granting unto said attorneys-in-fact, and each of them, full
power and authority to do and perform any and all acts necessary or incidental
to the performance and execution of the power herein expressly granted, as fully
to all intents and purposes as the undersigned might or could do in person,
hereby ratifying and confirming all that said attorneys-in-fact, or either of
them, or any of their substitutes, may lawfully do or cause to be done by virtue
hereof.
IN WITNESS WHEREOF, the undersigned has hereunto set the undersigned's
hand this 7th day of August, 2000.
/s/ Peter J. Mihajlov
----------------------------
Peter J. Mihajlov
<PAGE>
BUCA, INC.
POWER OF ATTORNEY OF DIRECTOR AND/OR OFFICER
--------------------------------------------
KNOW ALL MEN BY THESE PRESENTS, that the undersigned director and/or
officer of BUCA, Inc., a Minnesota corporation, does hereby make, constitute and
appoint Joseph P. Micatrotto and Greg A. Gadel, and each or any of them, the
undersigned's true and lawful attorneys-in-fact, with full power of substitution
and resubstitution for the undersigned in the undersigned's name, place and
stead, to sign and affix the undersigned's name as such director and/or officer
of said Company to the Registration Statement or Registration Statements on Form
S-8 relating to the 2000 Stock Incentive Plan of BUCA, Inc. and Affiliated
Companies and all amendments (including post-effective amendments) thereto, to
be filed by said Company with the Securities and Exchange Commission, and to
file the same, with all exhibits thereto and other supporting documents, with
said Commission, granting unto said attorneys-in-fact, and each of them, full
power and authority to do and perform any and all acts necessary or incidental
to the performance and execution of the power herein expressly granted, as fully
to all intents and purposes as the undersigned might or could do in person,
hereby ratifying and confirming all that said attorneys-in-fact, or either of
them, or any of their substitutes, may lawfully do or cause to be done by virtue
hereof.
IN WITNESS WHEREOF, the undersigned has hereunto set the undersigned's
hand this 7th day of August, 2000.
/s/ Philip A. Roberts
-------------------------------
Philip A. Roberts
<PAGE>
BUCA, INC.
POWER OF ATTORNEY OF DIRECTOR AND/OR OFFICER
--------------------------------------------
KNOW ALL MEN BY THESE PRESENTS, that the undersigned director and/or
officer of BUCA, Inc., a Minnesota corporation, does hereby make, constitute and
appoint Joseph P. Micatrotto and Greg A. Gadel, and each or any of them, the
undersigned's true and lawful attorneys-in-fact, with full power of substitution
and resubstitution for the undersigned in the undersigned's name, place and
stead, to sign and affix the undersigned's name as such director and/or officer
of said Company to the Registration Statement or Registration Statements on Form
S-8 relating to the 2000 Stock Incentive Plan of BUCA, Inc. and Affiliated
Companies and all amendments (including post-effective amendments) thereto, to
be filed by said Company with the Securities and Exchange Commission, and to
file the same, with all exhibits thereto and other supporting documents, with
said Commission, granting unto said attorneys-in-fact, and each of them, full
power and authority to do and perform any and all acts necessary or incidental
to the performance and execution of the power herein expressly granted, as fully
to all intents and purposes as the undersigned might or could do in person,
hereby ratifying and confirming all that said attorneys-in-fact, or either of
them, or any of their substitutes, may lawfully do or cause to be done by virtue
hereof.
IN WITNESS WHEREOF, the undersigned has hereunto set the undersigned's
hand this 7th day of August, 2000.
/s/ John P. Whaley
--------------------------
John P. Whaley
<PAGE>
BUCA, INC.
POWER OF ATTORNEY OF DIRECTOR AND/OR OFFICER
--------------------------------------------
KNOW ALL MEN BY THESE PRESENTS, that the undersigned director and/or
officer of BUCA, Inc., a Minnesota corporation, does hereby make, constitute and
appoint Joseph P. Micatrotto and Greg A. Gadel, and each or any of them, the
undersigned's true and lawful attorneys-in-fact, with full power of substitution
and resubstitution for the undersigned in the undersigned's name, place and
stead, to sign and affix the undersigned's name as such director and/or officer
of said Company to the Registration Statement or Registration Statements on Form
S-8 relating to the 2000 Stock Incentive Plan of BUCA, Inc. and Affiliated
Companies and all amendments (including post-effective amendments) thereto, to
be filed by said Company with the Securities and Exchange Commission, and to
file the same, with all exhibits thereto and other supporting documents, with
said Commission, granting unto said attorneys-in-fact, and each of them, full
power and authority to do and perform any and all acts necessary or incidental
to the performance and execution of the power herein expressly granted, as fully
to all intents and purposes as the undersigned might or could do in person,
hereby ratifying and confirming all that said attorneys-in-fact, or either of
them, or any of their substitutes, may lawfully do or cause to be done by virtue
hereof.
IN WITNESS WHEREOF, the undersigned has hereunto set the undersigned's
hand this 7th day of August, 2000.
/s/ Paul Zepf
------------------------
Paul Zepf
<PAGE>
BUCA, INC.
POWER OF ATTORNEY OF DIRECTOR AND/OR OFFICER
--------------------------------------------
KNOW ALL MEN BY THESE PRESENTS, that the undersigned director and/or
officer of BUCA, Inc., a Minnesota corporation, does hereby make, constitute and
appoint Joseph P. Micatrotto and Greg A. Gadel, and each or any of them, the
undersigned's true and lawful attorneys-in-fact, with full power of substitution
and resubstitution for the undersigned in the undersigned's name, place and
stead, to sign and affix the undersigned's name as such director and/or officer
of said Company to the Registration Statement or Registration Statements on Form
S-8 relating to the 2000 Stock Incentive Plan of BUCA, Inc. and Affiliated
Companies and all amendments (including post-effective amendments) thereto, to
be filed by said Company with the Securities and Exchange Commission, and to
file the same, with all exhibits thereto and other supporting documents, with
said Commission, granting unto said attorneys-in-fact, and each of them, full
power and authority to do and perform any and all acts necessary or incidental
to the performance and execution of the power herein expressly granted, as fully
to all intents and purposes as the undersigned might or could do in person,
hereby ratifying and confirming all that said attorneys-in-fact, or either of
them, or any of their substitutes, may lawfully do or cause to be done by virtue
hereof.
IN WITNESS WHEREOF, the undersigned has hereunto set the undersigned's
hand this 7th day of August, 2000.
/s/ Joseph P. Micatrotto
--------------------------------
Joseph P. Micatrotto
<PAGE>
BUCA, INC.
POWER OF ATTORNEY OF DIRECTOR AND/OR OFFICER
--------------------------------------------
KNOW ALL MEN BY THESE PRESENTS, that the undersigned director and/or
officer of BUCA, Inc., a Minnesota corporation, does hereby make, constitute and
appoint Joseph P. Micatrotto and Greg A. Gadel, and each or any of them, the
undersigned's true and lawful attorneys-in-fact, with full power of substitution
and resubstitution for the undersigned in the undersigned's name, place and
stead, to sign and affix the undersigned's name as such director and/or officer
of said Company to the Registration Statement or Registration Statements on Form
S-8 relating to the 2000 Stock Incentive Plan of BUCA, Inc. and Affiliated
Companies and all amendments (including post-effective amendments) thereto, to
be filed by said Company with the Securities and Exchange Commission, and to
file the same, with all exhibits thereto and other supporting documents, with
said Commission, granting unto said attorneys-in-fact, and each of them, full
power and authority to do and perform any and all acts necessary or incidental
to the performance and execution of the power herein expressly granted, as fully
to all intents and purposes as the undersigned might or could do in person,
hereby ratifying and confirming all that said attorneys-in-fact, or either of
them, or any of their substitutes, may lawfully do or cause to be done by virtue
hereof.
IN WITNESS WHEREOF, the undersigned has hereunto set the undersigned's
hand this 7th day of August, 2000.
/s/ Greg A. Gadel
------------------------------
Greg A. Gadel
