Colbert: "Why do you have a problem with my hero, papa bear Bill O'Reilly? You guys have been going at it, hammer and tongs." Olbermann: "Well, Stephen, he's an idiot." Colbert: "You say that like it's a bad thing. I think he sees the world simply, okay? Without all your complicated facts." Olbermann: "We're both saying the same thing. He's an idiot."

Comedy Central star Stephen Colbert’s nightly conservative/O’Reilly-mocking show "The Colbert Report" invited on MSNBC host Keith Olbermann Tuesday night to double up on the O’Reilly bashing.