Xbox is jdot1991, PS3 is Uglyfido. I think the only multiplayer game I actively play right now on my xbox is Crackdown. Gotta love the free games for gold.
On my PS3, shit, I'm not sure I've ever actually bothered with trying to play multiplayer anything on my PS3. Maybe some Bioshock 2....once I think. Lol Anyway, always down to add to the friend list, you never know when you might wanna play a game with someone.