I've got the CoD's, the Halo's, the Gears', the GRAW's, and the L4D's. I can't remember the other multiplayer shooters I've got, but I've mostly been playing SP games if I play at all these days, I get plenty of kicks out of AH. If we happen to be on at the same time though I'm game.
Xbox GT - SSL NUX
AH IGN - Rebel