Man, I play just about everything I can get my hands on. Started with 3.5, have gotten into 4E in a big, big way. Tried Pathfinder but haven't put any money down for it. Didn't really fix any of the problems I had with 3.x, just kind of treated some of the symptoms.
Also have New World of Darkness and the Werewolf, Mage and Changeling books for that, a ton of Exalted 2nd Edition stuff, Legend of the Five Rings and Legend of the Burning Sands, Call of Cthulhu, have had a lot of time with the Dragon Age RPG, still have my Iron Kingdoms books for the d20 system and the Saga Edition of the Star Wars RPG.
I just really like Pen & Paper role-playing games. Have also gotten the chance to play a space opera GURPS game, Traveller and the Serenity RPG (which I think is my favorite dedicated space RPG). Anima: Beyond Fantasy is a game I haven't had a chance to play, but I really want to.
Currently mid-hiatus running an Eberron 4E game, gonna start that back up when I get back to college in August. Also going to try to run a mixed-supernatural World of Darkness chronicle for a little bit as a nice diversion (mmm...urban fantasy).
For all of the people who were looking around for a game online, I wouldn't mind running a 4E PBP/PBE adventure. Just PM me.