CBS
One of Redstone's largest acquisitions came in the form of Viacom's former parent, CBS. Former Viacom President and COO Mel Karmazin (who was then the President of CBS) proposed a merger to Redstone on favorable terms and after the merger completed in 2000, Viacom had some of the most diversified businesses imaginable. Viacom had assets in the form of broadcast networks (CBS and UPN), cable television networks (MTV, VH1, Nickelodeon, MTV2, Comedy Central, BET, Nick at Nite, Noggin/The N, TV Land, CMT, and Spike TV), pay television (Showtime and The Movie Channel), radio (Infinity Broadcasting, which produced the immensely popular Howard Stern' radio shows), outdoor advertising, motion pictures (Paramount Pictures), and television production (Spelling Entertainment, Paramount Television, and Big Ticket Entertainment), and King World Productions (a syndication unit, which notably syndicates the runaway daytime hit, The Oprah Winfrey Show, as well as Dr. Phil, Wheel of Fortune, and Jeopardy!), among others.
After CBS and Viacom split in late 2005, Redstone remained chairman of both companies.
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