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* NAIRI INC (Last) (First) (Middle) 200 ELM STREET (Street) DEDHAM MA 02026 (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 X 10% Owner Officer (give title below) Other (specify below)
	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) Form filed by One Reporting Person X 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 A common stock	12/31/2005		D(1)		93,658,828	D	(1)	0.0000	D(2)
Class B common stock	12/31/2005		D(3)		79,619,055	D	(3)	0.0000	D(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

1. Name and Address of Reporting Person* NAIRI INC (Last) (First) (Middle) 200 ELM STREET (Street) DEDHAM MA 02026 (City) (State) (Zip) Relationship of Reporting Person(s) to Issuer X Director X 10% Owner Officer (give title below) Other (specify below)

1. Name and Address of Reporting Person* NATIONAL AMUSEMENTS INC /MD/ (Last) (First) (Middle) 200 ELM STREET (Street) DEDHAM MA 10000 (City) (State) (Zip) Relationship of Reporting Person(s) to Issuer X Director X 10% Owner Officer (give title below) Other (specify below)

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 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. The Reporting Person's disposition of Viacom Class A common stock and Viacom Class B common stock in the merger is exempt pursuant to Rule 16b-3(e) and Rule 16b-7.

2. These securities are owned directly by NAIRI Inc., but may also be deemed to be beneficially owned by NAIRI's parent corporation, National Amusements, Inc.

3. 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. The Reporting Person's disposition of Viacom Class A common stock and Viacom Class B common stock in the merger is exempt pursuant to Rule 16b-3(e) and Rule 16b-7.

Remarks:

	By: /s/ Richard J. Sherman, Vice President	01/04/2006
	By: /s/ Richard J. Sherman, Vice President	01/04/2006
	** Signature of Reporting Person	Date
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