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