I've currently got GTA IV and Crackdown for the multiplayer hotness, along with a decent selection of XBL Arcade games (Some Teenage Mutant Ninja Turtles anyone?). But I'm also happy to accept your perverted and probably racist voice messages as well. Friend me, so I don't feel alone and unwanted!
Got an hour or so of GTA IV in, downloaded a ton of demos, and played a little Geometry Wars, Pac-Man: CE, and Rez HD. And I haven't even touched Bioshock yet. Right now I'm just enjoying the novelty of streaming videos from my PC to the TV downstairs. I need some sleep.
In unrelated news... OH SHIT DENMARK THEY'RE ON TO YOU!!!