Master satirist Stephen Colbert describes how he runs his (now retired) Colbert Report each day:
“I say hello to the guest. I ask them the if they’ve seen the show. Sometimes they have, sometimes they haven’t. I always say the same thing, ‘I do the show in character. He’s an idiot. He’s willfully ignorant of what you know and care about. Please honestly disabuse me of my ignorance and we’ll have a great time.’”
Screencap from one of Stephen’s funniest moments where he broke character.