What games should I get for my Xbox 360?

I'd say Call of Duty 4? I think thats T. But if it's M, its not bad at all lol. Umm, Guitar Hero 3. Maybe Halo 3, the online play is great. Ehh... maybe Oblivion, it kind of is nerdy, but it's very fun. By the way if you have Xbox Live, or if your getting Xbox Live add me as a friend. My gamertag is Mr Spence Man.