UNITED STATES

                       SECURITIES AND EXCHANGE COMMISSION

                             Washington, D.C. 20549


                                    FORM 8-K
                                 CURRENT REPORT



                       Pursuant to Section 13 or 15(d) of
                       the Securities Exchange Act of 1934



      Date of Report (Date of earliest event reported): September 17, 2004


                                   VIACOM INC.
      --------------------------------------------------------------------
             (Exact name of registrant as specified in its charter)



          Delaware                   001-09553                 04-2949533
- ----------------------------  -----------------------    ----------------------
(State or other jurisdiction  (Commission File Number)      (I.R.S. Employer
     of incorporation)                                   Identification Number)


               1515 Broadway, New York, NY               10036
         --------------------------------------------------------
         (Address of principal executive offices)      (zip code)


       Registrant's telephone number, including area code: (212) 258-6000

Check the appropriate box below if the Form 8-K filing is intended to
simultaneously satisfy the filing obligation of the registrant under any of the
following provisions (see General Instruction A.2.):

[X] Written communications pursuant to Rule 425 under the Securities Act
(17 CFR 230.425)

[ ] Soliciting material pursuant to Rule 14a-12 under the Exchange Act
(17 CFR 240.14a-12)

[ ] Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange
Act (17 CFR 240.14d-2(b))

[ ] Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange
Act (17 CFR 240.13e-4(c))






Section 8--Other Events

Item 8.01    Other Events.

             On September 20, 2004, the Registrant issued a press release
regarding the lawsuit seeking to enjoin the Blockbuster split-off exchange
offer.

             A copy of the press release is attached hereto as Exhibit 99.1.


Section 9--Financial Statements and Exhibits

Item 9.01    Financial Statements and Exhibits.

       (c)   Exhibits

             Exhibit 99.1    Press Release, dated September 20, 2004, regarding
the lawsuit seeking to enjoin the Blockbuster split-off exchange offer.




                                    SIGNATURE

         Pursuant to the requirements of the Securities Exchange Act of 1934,
the Registrant has duly caused this report to be signed on its behalf by the
undersigned hereunto duly authorized.


                                                     VIACOM INC.
                                                     (Registrant)



                                   By:   /s/  Michael D. Fricklas
                                       ----------------------------------------
                                       Name:  Michael D. Fricklas
                                       Title: Executive Vice President, General
                                              Counsel and Secretary


Date:  September 20, 2004




                                  EXHIBIT INDEX

Exhibit 99.1         Press Release, dated September 20, 2004, regarding the
                     lawsuit seeking to enjoin the Blockbuster split-off
                     exchange offer.


                                                                    Exhibit 99.1

            VIACOM STATEMENT REGARDING LAWSUIT TO ENJOIN BLOCKBUSTER
                            SPLIT-OFF EXCHANGE OFFER

NEW YORK, NEW YORK, September 20, 2004 - Viacom Inc. (NYSE: VIA, VIA.B) said
today that the lawsuit filed on September 17, 2004 in the Court of Chancery of
Delaware seeking to enjoin the company's Blockbuster split-off exchange offer is
entirely without merit. The suit named Viacom Inc., National Amusements Inc. and
each of Viacom's directors as defendants and, among other things, alleges that
the related Prospectus-Offer to Exchange omits material information.

Information About the Exchange Offer

Stockholders of Viacom are advised to read Viacom's Tender Offer Statement on
Schedule TO, Blockbuster's Registration Statement on Form S-4 and the
Prospectus-Offer to Exchange, as well as any other documents relating to the
exchange offer that are filed with the SEC when they become available because
they will contain important information. Stockholders of Viacom may obtain
copies of these documents for free at the SEC's website at http://www.sec.gov or
from Viacom Investor Relations at 1-800-516-4399. Viacom stockholders may also
request copies of the exchange offer documents from Viacom's information agent,
MacKenzie Partners, Inc., located at 105 Madison Avenue, New York, NY 10016, at
(800) 322-2885 (toll-free) in the United States or at (212) 929-5500 (collect)
elsewhere.

Viacom Contacts:

Media: Analysts/Investors: Carl Folta Martin Shea Senior Vice President, Corporate Relations Senior Vice President, Investor Relations (212) 258-6352 (212) 258-6515 carl.folta@viacom.com marty.shea@viacom.com Susan Duffy James Bombassei Vice President, Corporate Relations Vice President, Investor Relations (212) 258-6347 (212) 258-6377 susan.duffy@viacom.com james.bombassei@viacom.com