Stephen Colbert: Keith Olbermann "Rants Like A Guy Who Saves His Own Urine"

Stephen Colbert hosted Newsweek columnist and MSNBC regular Jonathan Alter Thursday night, and opened the interview by asking about Keith Olbermann.

"You're on 'Countdown' a lot — Olbermann's insane, right?" Colbert asked. "I mean, Olbermann's crazy, right?"

"Olbermann is our great resource now in this country to get the truth out there," Alter responded. "He's doing a great job."

Colbert then explained the rationale for his question: "Because he rants like a guy who saves his own urine. Like, really dangerous kind of crazy."