Just caught the end of the interview on O'Reilly, and at least for the part I saw, Colbert was fully in character. In fact, the whole thing played as if it was a skit, as O'Reilly wasn't really playing it straight either. (It would be quite a swerve if they played it straight on Colbert's show instead!)
(edited by ges7184 on 18.1.07 2209) The Bored are already here. Idle hands are the devil's workshop. And no... we won't kill dolphins. But koalas are fair game.
Yeah. I pretty much figured Colbert would be in character on O'Reilly. And O'Reilly didn't really attack Colbert like he could've- it was like he was rolling his eyes at the whole thing, playing along as well he could while still getting subtle, yet soft digs in here and there.
My ranking of the top ten Simpsons episodes and more!: Experience It