Well, the Scotsman is a very funny guy.
I think Don Rickles said it best while he was on Jimmy Kimmel. He was talking about interactions he has had with talk show hosts, particularly late night. "You're fun like Johnny [Carson]. The Scottish is good, Letterman hides, and Jay ... well, Jay." He motioned a so-so gesture. "He'd rather sit there, collect his money and drive home in one of his cars than anything else. But you, you're fun."