I know I've posted this guy before, but bob damn this kid can play.
http://www.youtube.com/watch?v=LoFurLevE28&feature=user
Also, make sure you check out the latest Yahtzee posts, this guy is the funniest thing to happen to gaming in a very long time.
http://www.escapistmagazine.com/profiles/view/Yahtzee%20Croshaw
The latest
http://www.escapistmagazine.com/articles/view/editorials/zeropunctuation/3016-Zero-Punctuation-Burnout-Paradise