With Conan O'Brien's days at 'The Tonight Show' winding down, PopEater can exclusively reveal who will be the host's final guest on Jan. 22: Barry Manilow.

"It's a perfect fit for Barry, who was once Bette Midler's piano player, to be the one to say goodbye to Conan," says our insider. "Bette was the late great Johnny Carson's final guest and now Barry will be Conan's ... if his final date holds."