I'm up to 4 games now, which has me rather uncomfortable since I'm usually a monogamous gamer. The games are all filling different roles at different times, so it's not like I'm doing an orgy, but I'm definitely playing the whore.
DDO
Eschalon2 (finally started it, and slowly chipping my way thru)
Plants Vs Zombies (for the quick hit)
Etrian Odyssey 3 (DS, playing mobile and when the Wild Dogs hog the PC)