Best Game On The 360 So far?

Ok so what do you think is the best game on the 360 so far?
I would say, Gears Of War, cause no matter what you can always go back and play it after how ever long and still think it pwns half the games out there.
What about you?

I too would have to say Gears Of War but only as its been like Halo 2 was for the 360. My top fives for the 360 are

1. Gear Of War
2. Call Of Duty 4
3. Dead Or Alive 4
4. BioShock
5. Halo 3

I really liked Saints Row, Marble Blast was the best dollar to entertainment ratio... but the reason I bought a 360 and still my all time favorite 360 game is Dead Rising.

This is hard cause i played so many good games but some whih did disappoint me. As of now my top 5 games on the 360, in no specific order, are:

1- Grand theft auto IV
2- Guitar hero 2
3- Dead rising
4- COD2
5- Geometry wars

Best games deffo got to be halo 3.

1. Halo 3
2. Gears of war
3. Rainbow Six Vegas 1
4. The Darkness
5. Crackdown

The big 3.

1.GTA IV
2.Mass Effect
3.Bioshock

1.mass effect
2.Halo 3
3.gta iv
4.bioshock

I'd say Dead Rising, GTA 4, Saints Row, Bioshock, Halo 3.

gta 4 in peoples top 5 lolololololol
call of duty 4 ftw you know its true!!!!

Vegas 1 or cod 4, gears was good but got really repetative halo is good for a group of mates because of the freedom

Gears Of War..