I'm a PC game nut! Some of the ones I'm playing now are: Fable the Lost Chapters (better on the pc than the xbox IMO), Rouge Trooper (also on the xbox), Mirrors Edge (a 360 game as well), Airport Mania, and Guitar Hero 3 (yes on the PC, its fun! Takes a high end graphics card though)
What I like about 360 games on the PC is that since the controllers for the 360 are USB they *most times lol* will have the same controls for the PC version as the 360 version. Makes transtioning between the two really easy. The drawback is a lot of the 360 games need a good graphics card to run, since I like PC gaming better than console gaming anyhow I just took the console price and put it towards my computer instead of buying a console.