Hmmmm, tough choice. Halo 2 was good, but rather samey. Gaiden, just a bit too challenging for the more limited time I typically have, otherwise, quite good. San Andreas, well, I've never really liked GTA, but this was pretty good. DOA: Ultimate, I LOVE the series, cool updates and whatnot, but I woulda liked to see a new story. The next iteration should be cool. NFS Underground 2, cool racing but the driving from event to event got on my nerves. FR and LG, pretty cool, but overall, quite samey. I dunno, not an EXCELLENT year for the gaming community, but not a bad one either. In the end, though, I'll put my vote on DOA: Ultimate, seeing as how that's the game I've returned to the most out of all the ones I've played this year.
Man, I miss the days of gaming yore, back in the heyday of the console RPG.