Sawbuck Gamer, the AV Club's bi-weekly collection of cheap or free games, mostly for browsers and iPhones. It's where I found Canabalt (which I still <3) and there are a few others I've tried which are neat. Dig through the articles and you'll probably find something fun and unusual.
on the shelves Call of Duty 4: Modern Warfare (The W at Amazon) (gs, avg 9.5) "Fantastic mutliplayer game" seems to be consensus. If you want a FPS for the PS3, you can't do better than this. Lego Star Wars: The Complete Saga (gs, 7.