Sarah Palin, Simon Cowell and the cast of Jersey Shore will appear in the first two weeks.
Several networks including Fox, FX and Showtime have expressed interest in the late-night host.
The network and the host have reached a $45 million exit deal.
Jay Leno will once again sit in the host's chair starting March 1st, the night after the Winter Olympics conclude.
NBC is denying reports of a deal for Jay Leno to return to The Tonight Show
The late-night host releases a statement that he won't host a show that airs at 12:05 AM.
NBC wants O'Brien's show to come on at 12:05am.
It seems NBC might move Leno back to a late-night slot, which could affect The Tonight Show With Conan O'Brien
The new host of the late-night staple talks about his brand new gig on a new time.
The funnyman will be joined by first musical guest Pearl Jam on the new late-night show.
The late-night host will have his replacement on as his last guest of the show.
The moves were made to ensure solid lead-ins for The Tonight Show with Conan O'Brien's debut week.
The two are reunited after Richter's departure from Late Night with Conan O'Brien nine years ago.
NBC makes the official announcement on when O'Brien will replace Jay Leno.