Used to play lots of stuff in my younger days. Played Command and Conquer (and I"m sure some other games) a ton back when the internet was young. Played a first person shooter called Return to Castle Wolfenstein at a semi-competitive level in my college years. Never got into WoW and that kind of stuff though. I do play some xbow live with my son like the modern warfare games, but I'm awful.
only other online thing for me is Babo Violent 2. some of those guys are still around (remus is the original one to post in the babo forum about GLB, I think)
Previously to GLB I played Ultimate Baseball Online/Real Baseball Online (baseball mmorpg that wasn't browser-based, you legit played).
Other than that, not much besides some screwing around with friends on stuff. I don't even own a PS3/Xbox360/Nintendo Wii. Last game console I owned was Nintendo 64.