Conan O'Brien has reason to smile after his debut as "Tonight" show host. His first Nielsen Media Research report card showed a 7.1 rating and 17 audience share in the nation's biggest media markets.

In a few hours, Conan O'Brien will make his debut as "Tonight Show" host and Will Ferrell is the redheaded funnyman's first guest. "I'm extremely flattered by it," Will told Access Hollywood during an ...

NEW YORK — Conan O'Brien debuts as "Tonight" show host Monday, taking over television's most historic late-night franchise in a transition five years in the making. The network built a new studio for ...

O'Brien left NBC in 2010 after the network wanted to bump "The Tonight Show" to 12:05 a.m. to make room for Jay Leno. Does time — and a new host — heal all wounds? Fourteen years after Conan O'Brien ...

Conan O’Brien has millions of fans all across the world, at least one of whom may have pushed Jay Leno down that Pennsylvania hill as payback for the Tonight Show fiasco. Weirdly, it turns out that, ...

Friday marks the end of Conan O'Brien's seven-month tenure at the helm of the Tonight Show. Though the redheaded host may not have been at the top of his game, losing ratings and eventually the show ...

Widely regarded as one of the best talk show hosts of all time, Conan O'Brien has millions of devoted fans who can't get enough of his sense of humor. As a result, there was a lot of excitement when O ...

Conan O'Brien said late-night television is dying but made bold predictions about "The Late Show" host Stephen Colbert’s future during an award acceptance speech Saturday. O'Brien, known for his "Late ...

TBS announced today its pulling the plug on comedian George Lopez's late night show Lopez Tonight after two years. The last telecast will air Thursday, according to a network press release, writes ...