Dylan Moran - good call, Lulu! I think he's coming over here soon
Jack Dee
Eddie Izzard
Bill Hicks
Andy Kaufman - like Nowhereman said, he was so odd he was funny
Robin Williams - one of the best and most natural stand up comedians ever.
Richard Pryor - same goes for him. Pure genius.

My favourite thing about Eddie Izzard is that his comedy is totally suited to stoners. I mean, I don't know if he smokes or not but I imagine he does or he has done, because his comedy is full-on stoner comedy.

As an example, halfway through his routine he got sidetracked and started making stuff up, totally random and crazy stuff, then stopped and said "people usually think im on drugs, but no, this is me normal.. when im on drugs I start saying things like 'insurance; thats a good idea.. pensions, yes...'"