Well, for me, it's basically my entire Xbox 360 collection. I used to have a fair few games and a working Xbox with a hard drive, but these all got stolen (save for a couple of the games) last Easter. As in, Easter 2010. I eventually got most of the games back, along with a new Xbox, through the insurance, though a couple of games and the hard drive weren't covered. Since I didn't have a hard drive for a long time (kind of vital to me for music purposes) and thanks to work and university taking up most of my time, I rarely played anything aside from Steam games on my crappy laptop, until a couple of months ago. Now with a bit more free time, I've decided to play through my entire Xbox collection again, especially as my profile needs the Gamerscore that I'd previously earned, then lost with the stolen console.
Thus I recently completed Assassin's Creed 2 again, with all Achievements save one (that one for sweeping 5 enemies with a Long Weapon). I've now restarted Halo Reach as well, completing it on Legendary (quite a tough feat

), and will then move on to my general back catalogue. Probably Alone In The Dark first, then Bioshock and Bioshock 2...
