Uncharted series, Little Big Planet, Infamous, maybe Metal Gear.
I'd suggest GT5, but it's strangely soulless. I thought it would be great, because I love cars, but it's hampered by its own restrictions. They start you out on some odd 30 cars for free-play and maybe another 20 hatchbacks for purchase in singleplayer. Sounds okayish, still. However, after 3 weeks of playing, I'm still kinda stuck in the first half of the game. There is a difficulty curve that rapidly reaches impossible for anyone who does not actually race cars, and I find myself unable to progress. Besides that, the game is utterly sterile. You get cars, you race cars, there's pretty graphics and nice music, but it seems to misunderstand what a game should be. You think you're buying this simulator game and are going to just hop in a Ferrari F1 car, but it's a huge level-upping thingy. It doesn't think you are worthy of playing it, and hides most of it's 1000+ cars in the shroud of unlocking. Also, the menus are stupidly designed. It is manditory to have an HDTV, unless you want to hold down the zoom button finding the poorly-placed selections. There is a blasted loading-screen between EVERYTHING, and it's teeth-extractingly-painful to change your mind about something, like what car you're using on the level. Plain and simple, the game seems to hate the player...