Right now, I'm pretty much only looking for Mage: The Awakening games, and only play-by-post. In large part due to DaveB, I'm getting fixated on the world of new Mage. I can be convinced to play other things, and may look around, but I'm really big on rules-light systems, so keep that in mind. I'm not here for a board game.
I like thinkers and talkers in my characters, even if they're also bruisers. I've played 3.5 (but aren't really interested in it again), Sufficiently Advanced, Continuum, new Mage, and two homebrews you probably haven't heard of: Tau's Aria, and Six/Seven. I'm currently playing in an Everway play-by-post game set in Planescape, and hope to be playing in a play-by-post new Mage soon.