I'm mostly a PC gamer... Consoles are a few generations behind hardware compare to PC's, and FPS games just feel a lot better on a mouse and keyboard to me. But hey, to each his own. I used to play a LOT of Counter Strike Source, and various other games from Valve. Right now I play Counter Strike off and on, WoW, and various old school RPG games (been a fanatic of the Final Fantasy series since I was 5 years old). Can't really get into the newer COD games, they're all too easy on both multiplayer and single player... I don't like how it's just based on kill streaks, kinda defeats the purpose really. Just my opinion though : p Same goes for the newer Fallout games. Wayyyyy overrated.
I really need to lay off WoW though... it's really distracting me from a lot of things X.x