Marilyn Manson (the person whose real name is Brian Warner, not the band), was on The O'Rilley Factor once. He pretty much won the argument, while still done up. Not only did he win an argument with the king of interrupting you and not letting you speak, he did it without changing a thing about himself.
Marilyn Manson himself appeared on MTV on a program called Mothers Against Manson, in which he engaged in discussion with the concerned parents of two of his teenaged female fans. One mom's beef with Manson was that her daughter had turned away from Catholicism since becoming a Marilyn Manson fan. To this, Manson replied very calmly and not unkindly, "Maybe it's your religion, and it wasn't supposed to be hers."
Manson's appearance in Michael Moore's Bowling for Columbine where Moore interviewed him in response to accusations that his music had helped drive the Columbine killers to commit their massacre. Manson was completely calm and level-headed and when Moore asked him what he would say to the killers if he had the chance, he responded "I wouldn't say anything; I'd just listen to what they had to say, and that's what no one did." Best moment in the movie, right there.