i just got a xbox 360, what are some good xbox 360 games?

i just got a xbox 360 and i want to know some good titles for the xbox 360, any suggestions?Savage_Doom

-Call of Duty 2

-Gears of War

-Dead Rising

-Elder Scrolls IV: Oblivion

-Ghost Recon Advanced Warfighter

-Guitar Hero 2

There are a lot of other good games available, but these, in my humble opinion, are the cream of the crop right now.

1- Rainbow Six Vegas

2 - Hitman Blood Money

3-Call of Duty 3