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
OMB APPROVAL
OMB Number: 3235-0287
Expires: January 31, 2005
Estimated average burden hours per response... 0.5

(Print or Type Responses)
1. Name and Address of Reporting Person *
REDSTONE SHARI
   2. Issuer Name and Ticker or Trading Symbol
VIACOM INC [VIA, VIAB] 		5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
__X__ Director _____ 10% Owner
__X__ Officer (give title below) _____ Other (specify below)
Vice Chairman
(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 B common stock 12/31/2005   D   3,000 D (1) 0 I By Trusts (2)

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB control number. SEC 1474 (9-02)

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
Director Stock Option (right to buy) $ 34.21 12/31/2005   D     10,000 06/14/2006 06/14/2015 Class B common stock 10,000 (3) 0 D  
Phantom Class A Common Stock Units (4) 12/31/2005   D     517   (4)   (4) Class A common stock 517 (5) 0 D  
Phantom Class B Common Stock Units (4) 12/31/2005   D     521   (4)   (4) Class B common stock 521 (5) 0 D  

Reporting Owners

Reporting Owner Name / Address Relationships
 Director  10% Owner  Officer  Other
REDSTONE SHARI
1515 BROADWAY
NEW YORK, NY 10036		   X     Vice Chairman  

Signatures

 By: /s/ Angeline C. Straka, Attorney-in-fact   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 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.
(2) These shares are held in three separate trusts for the benefit of the reporting person's children. The reporting person is a co-trustee of these trusts.
(3) In the Merger, each grant of stock options to buy Viacom Class B common stock was converted into an equal number of stock options to buy CBS Corporation Class B common stock and New Viacom Class B common stock determined by multiplying the number of outstanding stock options included in the grant before the Merger by 0.488609. The per share exercise price of the converted stock options was determined by dividing the pre-Merger exercise price by 1.273438 for the CBS options and by 0.792802 for the New Viacom options.
(4) Phantom Common Stock Units are paid out after the Director's retirement from the Board and are settled in cash. Each Phantom Class A Common Stock Unit was the economic equivalent of one share of Viacom Class A common stock and each Phantom Class B Common Stock Unit was the economic equivalent of one share of Viacom Class B common stock.
(5) In the Merger, each Viacom Phantom Class A Common Stock Unit was deemed to be exchanged for 0.5 CBS Corporation Phantom Class A Common Stock Units and 0.5 New Viacom Corp. (New Viacom) Phantom Class A Common Stock Units; and each Viacom Phantom Class B Common Stock Unit was deemed to be exchanged for 0.5 CBS Corporation Phantom Class B Common Stock Units and 0.5 New Viacom Phantom Class B Common Stock Units. 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, the opening price of CBS Corporation Class B common stock on the New York Stock Exchange was $25.60 per share, the opening price of New Viacom Class A common stock on the New York Stock Exchange was $40.00 per share and the opening price of New Viacom Class B common stock on the New York Stock Exchange was $41.12 per share.

Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.

Potential persons who are to respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB number.