@ mrstickball:
Rockstar is doing LA Noire
Ubisoft is doing Haze
Naughty Dog did Uncharted
Insomniac did R&C and Resistance
Media Molecule is doing LittleBigPlanet
But those are just a few games that I really had to think about. It's true--if you're a western developer, you're most likely making games for the 360.