Ownership Submission
FORM 4
Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940
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(Print or Type Responses)
1. Name and Address of Reporting Person *
Freston Thomas E
   2. Issuer Name and Ticker or Trading Symbol
VIACOM INC [VIA, VIAB] 		5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
_____ Director _____ 10% Owner
__X__ Officer (give title below) _____ Other (specify below)
Co-President and Co-COO
(Last)
(First)
(Middle)
1515 BROADWAY		 3. Date of Earliest Transaction (Month/Day/Year)
12/31/2005
(Street)

NEW YORK, NY 10036		 4. If Amendment, Date Original Filed(Month/Day/Year)
 6. Individual or Joint/Group Filing(Check Applicable Line)
_X_ Form filed by One Reporting Person
___ Form filed by More than One Reporting Person
(City)
(State)
(Zip)
Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1.Title of Security
(Instr. 3)		 2. Transaction Date (Month/Day/Year) 2A. Deemed Execution Date, if any (Month/Day/Year) 3. Transaction Code
(Instr. 8)		 4. Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4 and 5)		 5. Amount of Securities Beneficially Owned Following Reported Transaction(s)
(Instr. 3 and 4)		 6. Ownership Form: Direct (D) or Indirect (I)
(Instr. 4)		 7. Nature of Indirect Beneficial Ownership
(Instr. 4)
Code V Amount (A) or (D) Price
Class A common stock 12/31/2005   D   74 D (1) 0 I By 401(k)
Class B common stock 12/31/2005   D   778 D (2) 0 I By 401(k)
Class B common stock 12/31/2005   D   65 D (2) 0 I By Spouse (IRA Account) (3)

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
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Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security
(Instr. 3)		 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (Month/Day/Year) 3A. Deemed Execution Date, if any (Month/Day/Year) 4. Transaction Code
(Instr. 8)		 5. Number of Derivative Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4, and 5)		 6. Date Exercisable and Expiration Date
(Month/Day/Year)		 7. Title and Amount of Underlying Securities
(Instr. 3 and 4)		 8. Price of Derivative Security
(Instr. 5)		 9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s)
(Instr. 4)		 10. Ownership Form of Derivative Security: Direct (D) or Indirect (I)
(Instr. 4)		 11. Nature of Indirect Beneficial Ownership
(Instr. 4)
Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares
Employee Stock Option (right to buy) (7) $ 30.5625 12/31/2005   D     1,322,000   (8) 08/20/2008 Class B common stock 1,322,000 (9) 0 D  
Employee Stock Option (right to buy) (7) $ 55.75 12/31/2005   D     1,000,000   (8) 05/04/2010 Class B common stock 1,000,000 (9) 0 D  
Class A Phantom Common Stock Units (4) 12/31/2005   D     2,750.6592   (4)   (4) Class A common stock 2,750.6592 (5) 0 D  
Class B Phantom Common Stock Units (4) 12/31/2005   D     10,422.1051   (4)   (4) Class B common stock 10,422.1051 (6) 0 D  
Employee Stock Option (right to buy) (7) $ 57.01 12/31/2005   D     300,000   (8) 05/23/2011 Class B common stock 300,000 (9) 0 D  
Employee Stock Option (right to buy) (7) $ 48.16 12/31/2005   D     400,000   (8) 05/22/2012 Class B common stock 400,000 (9) 0 D  
Employee Stock Option (right to buy) (7) $ 39.33 12/31/2005   D     400,000   (8) 01/29/2013 Class B common stock 400,000 (9) 0 D  
Employee Stock Option (right to buy) (7) $ 40.39 12/31/2005   D     400,000   (8) 01/28/2014 Class B common stock 400,000 (9) 0 D  
Employee Stock Option (right to buy) (7) $ 35.51 12/31/2005   D     500,000   (8) 07/01/2014 Class B common stock 500,000 (9) 0 D  
Employee Stock Option (right to buy) (7) $ 35.51 12/31/2005   D     1,000,000   (10) 07/01/2014 Class B common stock 1,000,000 (9) 0 D  

Reporting Owners

Reporting Owner Name / Address Relationships
 Director  10% Owner  Officer  Other
Freston Thomas E
1515 BROADWAY
NEW YORK, NY 10036		       Co-President and Co-COO  

Signatures

 /s/ Freston, Thomas E.   01/04/2006
**Signature of Reporting Person Date

Explanation of Responses:

* If the form is filed by more than one reporting person, see Instruction 4(b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
(1) Disposed of pursuant to a merger between Viacom Inc. and Viacom Merger Sub Inc. (the Merger), in exchange for 0.5 shares of CBS Corporation Class A common stock and 0.5 shares of New Viacom Corp. (New Viacom) Class A common stock for each share of Viacom Class A common stock, with cash in lieu of any fractional shares of CBS Corporation Class A common stock and New Viacom Class A common stock. On January 3, 2006, the first business day following the effective time of the Merger, the opening price of CBS Corporation Class A common stock on the New York Stock Exchange was $25.60 per share and the opening price of New Viacom Class A common stock on the New York Stock Exchange was $40.00 per share. Viacom Inc. changed its name to CBS Corporation upon completion of the Merger.
(2) Disposed of pursuant to a merger between Viacom Inc. and Viacom Merger Sub Inc. (the Merger), in exchange for 0.5 shares of CBS Corporation Class B common stock and 0.5 shares of New Viacom Corp. (New Viacom) Class B common stock for each share of Viacom Class B common stock, with cash in lieu of any fractional shares of CBS Corporation Class B common stock and New Viacom Class B common stock. On January 3, 2006, the first business day following the effective time of the Merger, the opening price of CBS Corporation Class B common stock on the New York Stock Exchange was $25.60 per share and the opening price of New Viacom Class B common stock on the New York Stock Exchange was $41.12 per share. Viacom Inc. changed its name to CBS Corporation upon completion of the Merger.
(3) The Reporting Person disclaims beneficial ownership of these securities and this report shall not be deemed an admission that the Reporting Person is the beneficial owner of such securities for purposes of Section 16 or any other purposes.
(4) Phantom common stock units are payable in cash following the Reporting Person's retirement or other termination of service pursuant to the Viacom Excess 401(k) Plan for Designated Senior Executives. Each Viacom Class A Phantom common stock unit was the economic equivalent of one share of Viacom Class A common stock and each Viacom Class B Phantom common stock unit was the economic equivalent of one share of Viacom Class B common stock.
(5) In the Merger, each Viacom Class A Phantom Common Stock Unit was deemed to be exchanged for 0.5 CBS Corporation Phantom Class A Common Stock Units and 0.5 New Viacom Class A Phantom Common Stock Units.
(6) In the Merger, each Viacom Class B Phantom Common Stock Unit was deemed to be exchanged for 0.5 CBS Corporation Phantom Class B Common Stock Units and 0.5 New Viacom Class B Phantom Common Stock Units.
(7) Right to buy under Issuer's long term incentive plan.
(8) Current.
(9) In the Merger, each grant of stock options to buy Viacom Class B common stock was converted into a number of stock options to buy New Viacom Class B common stock determined by multiplying the number of outstanding stock options included in the grant before the Merger by 0.792802. The per share exercise price of the converted stock options was determined by dividing the pre-Merger exercise price by 0.792802.
(10) This option vests in four equal annual installments beginning on July 1, 2005

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