My favorite is Dylan Moran.
He has a funny thing that's not stand up called "Rejection".
youtube. com/watch?v=oS1NOXWVWgo
Just spent the last few hours trying to pick a stand up clip, and couldn't really narrow it down. But there is one show called "Like, Totally", chosen specially for you, dubblemonkey, as minutes 6-7 was a good little snippet on Australia.
youtube. com/watch?v=HNAh9_BPBFk

Because it should be mentioned trigger-wise for anyone for whom it is a concern, he does smoke and drink.

There are entire shows of various tours broken into parts, which is nice to be able to get more than clips. One thing in watching him is to pay attention to the little things he says just tossed into a run-on, because a lot of it will go right by if you don't.

(He's also known for Black Books. youtube .com/watch?v=rtxUdbNKpK0&feature=related)

Heh. I went to the Cat Laughs comedy festival in Ireland in 2005, and your man Jimeoin was there. So was Dylan Moran but I didn't know who he was then, but am SOOO kicking myself now!!!... (Lewis Black was there too. Didn't see him either...) I had just the ticket to one show, and it was Ardal O'Hanlon, Karl Spain and Rich Hall. Got to talk briefly with Ardal. Shouted out when Rich Hall asked a question he didn't expect anyone to answer in the affirmative, lol. Yeah, I was a little hypo.

(Sorry to have put the space between youtube and com, but I couldn't get it to simply put a link (w/o the little tv thing, that is). Argh!)

And then of course there's Robin Williams...