I've got more games going on now than I can remember!!
I like to mix it up a bit, depending on the mood. When I'm really tired and I want something that's not too taxing, my favourite 'fall-guy' is Mah Jonng. (sp?)
Otherwise, I've got Dark Cloud, FFIV, FFIX, and a few others that I don't remember going at the moment!
(gonna need to finish one of them at some point, eh!?)