EXHIBIT 99.3

     GUARANTEE,  dated as of December  15,  1994,  made by Viacom  International
Inc., a Delaware  corporation (the "Guarantor"),  in favor of the holders of the
6-5/8% Senior Notes (the "Notes") due 1998 of Viacom Inc. ("Viacom").

                                  WITNESSETH:
                                  -----------

     SECTION 1. Guarantee.  The Guarantor hereby unconditionally  guarantees the
punctual  payment  when due,  whether at stated  maturity,  by  acceleration  or
otherwise,  of the principal of, premium, if any, and interest on the Notes (the
"Obligations"),  according to the terms of such Notes as more fully described in
the  Indenture  dated as of February 1, 1993,  between  Viacom (as  successor to
Blockbuster  Entertainment  Corporation) and Bank of America Illinois  (formerly
known as Continental Bank, National Association) (the "Trustee"), as trustee, as
supplemented by the First Suppl emental Indenture dated as of September 29, 1994
among Blockbuster Entertainment Corporation, Viacom and the Trustee (as amended,
modified or otherwise  supplemented from time to time, referred to herein as the
"Indenture").

     SECTION  2.  Guarantee   Absolute.   The  Guarantor   guarantees  that  the
Obligations will be paid strictly in accordance with the terms of the Indenture,
regardless  of any law,  regulation  or order now or  hereafter in effect in any
jurisdiction  affecting  any of such  terms or the rights of holder of the Notes
with respect thereto.  The liability of the Guarantor under this Guarantee shall
be absolute and unconditional irrespective of:

     (i) any lack of validity or  enforceability  of the  Indenture or any other
agreement or instrument relating thereto;

    (ii) any change in the time, manner or place of payment of, or in any other
term of, all or any of the  Obligations,  or any other amendment or waiver of or
any consent to departure from any of the Indenture;

   (iii) any exchange,  release or  non-perfection  of any collateral,  or any
release  or  amendment  or  waiver of or  consent  to  departure  from any other
guaranty, for all or any of the Obligations; or

    (iv) any other  circumstance  which might  otherwise  constitute  a defense
available to, or a discharge of, Viacom, or a guarantor.



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     SECTION 3. Waiver.  The  Guarantor  hereby waives  diligence,  presentment,
demand  of  payment,  filing  of  claims  with a court in the event of merger or
bankruptcy  of Viacom,  any right to require a  proceeding  filed first  against
Viacom,  protest or notice with respect to the Notes or the  btedness  evidenced
thereby and all demands whatsoever.

     SECTION 4. No Waiver; Remedies. No failure on the part of any holder of the
Notes to exercise, and no delay in exercising, any right hereunder shall operate
as a waiver  thereof;  nor shall any  single or  partial  exercise  of any right
hereunder  preclude  any other or further  exercise  eof or the  exercise of any
other right.  The remedies  herein  provided are cumulative and not exclusive of
any remedies provided by law.

     SECTION 5. Continuing Guarantee;  Transfer of Interest. This Guarantee is a
continuing  guaranty  and shall (i) remain in full  force and  effect  until the
earliest to occur of (A) the date on which the Guarantor shall  consolidate with
or merge into Viacom or any successor  thereto,  (B) date on which Viacom or any
successor  thereto  shall  consolidate  with or merge into the Guarantor and (C)
payment in full of the  Obligations,  (ii) be binding  upon the  Guarantor,  its
successors and assigns,  and (iii) inure to the benefit of and be enforceable by
any  holder  of  Notes,  by the Tru  stee and by  their  respective  successors,
transferees, and assigns.

     SECTION 6. Reinstatement.  This Guarantee shall continue to be effective or
be  reinstated,  as the case may be,  if at any time any  payment  of any of the
Obligations  is  rescinded  or must  otherwise  be returned by any holder of the
Notes or the Trustee upon the insolvency, bankruptcy o organization of Viacom or
otherwise, all as though such payment had not been made.

     SECTION 7. Limitation of Guarantor's Liability.  The Guarantor,  and by its
acceptance of this  Guarantee each holder of Notes,  hereby  confirms that it is
the intention of all such parties that in no event shall any  obligations of the
Guarantor  under its Guarantee  constitute a fraudu  transfer or conveyance  for
purposes  of, or  result  in a  violation  of,  any  United  States  federal  or
applicable  United States state law. To effectuate the foregoing  intention,  in
the event that this Guarantee would, but for this sentence, constitute or result
in such a transfer or violation,  t hen the liability of the Guarantor under its
Guarantee  shall be reduced to the extent  necessary to eliminate such violation
under the applicable fraudulent conveyance or similar law.

     SECTION 8.  Amendment.  The Guarantor may amend this  Guarantee at any time
for any purpose without the consent of the Trustee or any holder of the Notes.



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     SECTION  9.  Governing  Law.  THIS  GUARANTEE  SHALL BE  GOVERNED  BY,  AND
CONSTRUED IN ACCORDANCE WITH, THE LAWS OF THE STATE OF NEW YORK,  WITHOUT REGARD
TO THE PROVISIONS THEREOF RELATING TO CONFLICT OF LAWS.

     IN WITNESS  WHEREOF,  the  Guarantor  has caused this  Guarantee to be duly
executed and delivered by its officer  thereunto duly  authorized as of the date
first above written.

                                        VIACOM INTERNATIONAL INC.


                                        By: /s/ GEORGE S. SMITH, JR.       
                                           ------------------------------------
                                            Name:  George S. Smith, Jr.
                                            Title: Senior Vice President,
                                                   Chief Financial Officer



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