Crackdown-From the same dude who did GTA this game features RPG elements, 100% free roaming were you actually decide who, where and when to do what and a fantastic online playing mode.
Stranglehold-Basically gun-porn and showing of what next-gen can do with enviroments, expect short, unadulterated fun
Mass Effect-Strategy meets free-roaming meets action meets fun
Indianna Jones 2007-The first game to use the Euphoria game engine and bio-mechanical a.i-yeah, big words are cool, but this means smart enemys and realistic actions
GTA4- No f***ing **** Sherlock