Did you play Bionic Commando Rearmed yet?
It has local co-op too, and the music is pretty damn good. Plus, the sequel is coming in 2011 so you can prepare yourself for that!
Anyways, Perfect Dark is also a good option, but it's exactly the same as it was before (which is a good thing).
Random game thought :
Why is Bionic Commando Rearmed 2 getting so much hate? We finally get a real game and they're not even satisfied... I'm starting to hate the gaming community so f****** much...







