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SEC FORM 4 SEC Form 4
FORM 4 UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940 		 
OMB APPROVAL
OMB Number: 3235-0287
Estimated average burden
hours per response: 0.5
Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
1. Name and Address of Reporting Person*
REDSTONE SHARI
(Last) (First) (Middle)
1515 BROADWAY
(Street)
NEW YORK NY 10036
(City) (State) (Zip)
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
3. Date of Earliest Transaction (Month/Day/Year)
12/31/2005
4. If Amendment, Date of 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
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) 0.0000 I By Trusts(2)
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 Securities Underlying Derivative Security (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: 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) 0.0000 D
Phantom Class A Common Stock Units (4) 12/31/2005 D 517 (4) (4) Class A common stock 517 (5) 0.0000 D
Phantom Class B Common Stock Units (4) 12/31/2005 D 521 (4) (4) Class B common stock 521 (5) 0.0000 D
Explanation of Responses:
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.
Remarks:
By: /s/ Angeline C. Straka, Attorney-in-fact 01/04/2006
** Signature of Reporting Person Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* 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).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
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 Number.
POWER OF ATTORNEY

	The undersigned hereby constitutes and appoints
Louis J. Briskman and Angeline C. Straka, and each of them
singly, the undersigned's true and lawful attorney-in-fact to
execute and file for and on behalf of the undersigned (i) any
reports on Forms 3, 4  and 5 (including any amendments
thereto and any successors to such Forms) with respect to
ownership of securities of CBS Corporation, formerly known as
Viacom Inc. (the "Company"), that the undersigned may be required
to file with the U.S. Securities and Exchange Commission
in accordance with Section 16(a) of the Securities Exchange Act
of 1934 and the rules thereunder and (ii) any other documents
necessary or appropriate to obtain codes and passwords enabling
the undersigned to file such reports electronically.

	The undersigned acknowledges that the foregoing
attorney-in-fact, in serving in such capacity at the request
of the undersigned, is not assuming, nor is the Company
assuming, any of the undersigned's responsibilities to
comply with Section 16 of the
Securities Exchange Act of 1934.

	This Power of Attorney shall remain in full force
and effect until the undersigned is no longer required to file
Forms 3, 4 and 5 with respect to the undersigned's holdings and
transactions in securities issued by the Company, unless earlier
revoked by the undersigned in a signed writing delivered to
the foregoing attorney-in-fact.   This Power of Attorney revokes
and replaces any prior Power of Attorney executed by the
undersigned with respect to the ownership of securities of the Company.

	IN WITNESS WHEREOF, the undersigned has caused this Power of
Attorney to be executed as of this 31st day of  December, 2005.


		Signature:  /s/ Shari Redstone
		Print:  Shari Redstone