Great site with some very funny reviews of games. I just saw the Halo 3 review, but it looks like there are plenty more. The reviewer is "Yahtzee a British-born, currently Australian-based writer and gamer with a sweet hat and a chip on his shoulder. When he isn't talking very fast into a headset mic he also designs freeware adventure games and does the occasional feature for Australia's Hyper Magazine."
I think it's worth checking out.