Colbert and O'Reilly have a great relationship and this was clearly a comedy sketch...
I'm going to have to respectfully disagree. O'Reilly wasn't joking, he thought he was going to kick Colbert's butt, and did everything he could to do so.
I wouldn't say I "hate" him. I just have no respect for him because he's a mean spirited, obnoxious bully. I think it's funny when bullies get taken down.
