With Pablo, Bits and Pieces was his best show and everything I have heard since and before then was mediocre but still made me laugh. I recently checked out Ricky Gervais stand up and was laughing my ass off, but I wouldn't consider him "clean" but it was cleaner than most others. Robin Williams is definately not clean, I don't think I have heard a stand up swear more than him, but I haven't found a comedian yet that I found vulgar or offensive. Vulgar and offensive are 2 words not in my vocabulary because nothing hits a nerve or offends me, or at least not yet. The only thing that offends me is bad music and horrible lifetime movies, hehe.