Ok, im about to get xbox live for my 360, what games should i get with it. (I already have MW2, Halo 3, ODST, cuz i know those 3 are really good for xbox live)

Ive liked games since i was 4, and zelda was the vary first game i played. I LOVE GAMES!!!!!!!!! but my fav. game ever, was RE 4. From its interesting stoy to its flawlles gameplay, that game rocked!