I just watched Religulous and it was pretty awesome, I would suggest it to anyone who isn't really big on God or anything. His point was anti-religion, including atheism, championing agnosticism as the only truly acceptable religion for its complete and utter doubt.
I dunno, it was really funny and really scary, but the ending was so much weaker than I thought it would be. He builds up all these points and just when he's about to knock them down, he just pushes them over instead of really hitting it home.
Oh well, it was still awesome.