Conan O'Brien

Former "Tonight Show" host Conan O'Brien kicks off his "The Legally Prohibited from Being Funny on Television Tour" at the Hult Center for the Performing Arts in Eugene, Ore., Monday, April 12, 2010. O'Brien will return to television in November on the cable station TBS.

Former "Tonight Show" host Conan O'Brien kicks off his "The Legally Prohibited from Being Funny on Television Tour" at the Hult Center for the Performing Arts in Eugene, Ore., Monday, April 12, 2010.

Conan O'Brien delivers his final monologue as host of "The Tonight Show" on Friday, Jan. 22, 2010. O'Brien quit the show rather than host it at 12:05 a.m. after the return of Jay Leno to late-night television.

Conan O'Brien, right, interviews Will Ferrell as O'Brien makes his debut as the host of NBC's "The Tonight Show" on Monday, June 1, 2009, in Universal City, Calif.

NBC tried to please both Jay Leno and Conan O'Brien by offering Leno a half-hour show at 11:35 p.m. and letting O'Brien keep "The Tonight Show" name and begin a half hour later. O'Brien said no and Leno, whose primetime show bombed, slipped back into his old home. O'Brien is set to start a new show on TBS in November.

Conan O'Brien takes the stage before making an award presentation at the 60th Primetime Emmy Awards in Los Angeles, Sunday, Sept. 21, 2008.

Emmy-winning late-night talk show comedian Conan O'Brien hosts "Stand Up for Heroes: A Benefit for the Bob Woodruff Family Fund" on Wednesday, Nov. 7, 2007, at Town Hall in New York.

Conan O'Brien, left, and Robin Williams show each other their affectionate side during a special moment at the N.Y. Comedy Festival Event "Stand Up for Heroes: A Benefit for the Bob Woodruff Family Fund" on Wednesday, Nov. 7, 2007, at Town Hall in New York.

Conan O'Brien holds the award for outstanding writing for a variety, music or comedy program for "Late Night with Conan O'Brien" at the 59th Primetime Emmy Awards on Sept. 16, 2007, in Los Angeles. O'Brien hosted "Late Night" from 1993 up until he took over "The Tonight Show" in 2009. Prior to "Late Night," he was a writer and producer for "The Simpsons."

2006 Emmy Awards host Conan O'Brien and his wife, Liza Powell, arrive at the HBO post-Emmy Awards party in West Hollywood, Calif., Sunday, Aug. 27, 2006. O'Brien and Powell married in 2002 and have two children.

AP Photo/ Antti Aimo-Koivisto , Lehtikuva

Conan O'Brien, left, hands a Valentine's Day present to Finland's President Tarja Halonen at the presidential palace in Helsinki, Finland, in February 2006, as they pose for photographers before their closed-door meeting. O'Brien caused a political stir the year before when he endorsed Halonen for a second six-year term because "she looks like him," using mock ad campaigns that backed her and attacked opponents. Halonen won the election.

Conan O'Brien, center, poses for a photo with fans as he arrives at the Kennedy Center, Monday, Oct. 25, 2004, in Washington.

Conan O'Brien clowns around with a guitar while hosting the 54th Annual Primetime Emmy Awards on Sunday, Sept. 22, 2002, in Los Angeles.