Are there any co op games on xbox 360?

the only one I can think of is halo 3 but it's not out yet.

GRAW, GRAW 2, GoW...off the top of my head, I am sure there are several others as well

A few off the top of my head, based on ones I own:

Kameo
Rainbow 6: Vegas
Crackdown
Gears of War
Marvel: Ultimate Alliance
Ghost Recon: Advanced Warfighter

Gears is probably the greatest co-op game ever. It works better as a co-op story than an individual game, IMO.

yeah i liked it better as a co-op game than a single player game as well. plus, it makes the game that much easier b/c you can communicate with them

Gears and Rainbow Six: Vegas

On Vegas you can play with (4) coop. By the way Halo 3 will have (4) coop as well and everyone is looking forward to that.

Kenny J - Buzz Starhopper

a slightly older game not yet mentioned is Perfect Dark Zero; which has co-op as well.

Actually, does anyone know any 4 player offline co-op (campaign/story mode in particular) besides Halo 3, GRAW 1 and 2? Other next gen consoles are ok as well. Thanks in advance!

I like Marvel Ultimate Alliance the best for the co-op. My brother and I had a blast.

I was just reading that you can in Enternal Sonata, the battles can be played in coop.

Can anyone confirm?

A lot of the arcade games are coop

golden axe
double dragon
... several others i cant remember now.

Locally, yes.

Crackdown is co-op with XBL only - just thought I'd point that out -