<PAGE>
EXHIBIT 24.1
POWERS OF ATTORNEY
KNOW ALL MEN BY THESE PRESENTS that each individual whose signatures appear
below hereby severally and individually constitutes and appoints Shant S.
Hovnanian as the true and lawful attorney-in-fact for the undersigned, in any
and all capacities, with full power of substitution, to sign any and all
amendments to a Registration Statement on Form S-3 for the registration of
common stock of the SPEEDUS.COM, Inc., Commission File No. 333-45730, any
subsequent Registration Statement for the same offering which may be filed under
Rule 462(b) and any and all pre- or post-effective amendments thereto, and to
file the same with exhibits thereto and other documents in connection therewith,
with the Securities and Exchange Commission, granting unto said attorney-in-fact
full power and authority to do and perform each and every act and thing
requisite and necessary to be done in and about the premises, as fully to all
intents and purposes as he or she might or could do in person, hereby ratifying
and confirming all that said attorney-in-fact may lawfully do or cause to be
done by virtue hereof.
IN WITNESS WHEREOF, each undersigned has hereunto set his hand on the 15th
day of December, 2000.
/s/William F. Leimkuhler
------------------------------
William F. Leimkuhler
/s/Jeffrey Najarian
------------------------------
Jeffrey Najarian
