When Jon Stewart said the bit about lava lamp, blahblahblah... I got the impression that he was being super tongue-in-cheek. Sorta taking the stereotype & laughing at *it*, not at the NORML guy. I'm sure there's a more concise way to explain what I mean, but I can't think of it right now.

I think he does that sort of thing a lot, to make the point that many of our stereotypes are just silly. I mean, he talks about smoking himself, & he's sitting behind the desk in a suit & tie, so there ya go.