favorite 360 game?

i know this is a question that is used a lot but whats your fav 360 game mine is cod4 and mass effectfavorite 360 game?
Oblivion.favorite 360 game?
either Gears of War or COD4
tie with RB2, GH3, GOW and COD4
Mass effect. This has become quite possibly my favourite RPG of all time, next to Oblivion.
Orange Box
Honestly... Silent Hill Homecoming is the only game that I have played through more than once on my 360.Silent Hill Homecoming hands down.
Ugh. I hated Silent Hill Homecoming.
Halo 3 GOW oblivion mass effect bioshock
GTA4, COD4, HALO3.
This is probably a first, but i love to play Kane and lynch on the 360.so its a tie with GTA IV and Kane and Lynch. but the 360 has so many good games its hard to choose.
Cod 4, Too human , Gow and halo 3
I'd have to say Gears of War :D
Lost planet:Extreme condition is overall best for me.
Gears of War, Oblivion, and COD4.
I can safely say that my favorite xbox 360 games have been Mass Effect and Grand Theft Auto IV I also seemed to enjoy a lot Tenchu Z, even though it was poorly made and overly repetitive, it had something in it that made it fun for some reason.
Halo 3,no question.
Eternal Sonata, Gears of War, Tales of Vesperia.
BioShock, COD4
COD 4 soon to be Fable 2