RPGs, but Western RPGs.
I find that JRPGs have the most pretentious storylines, and bland, 2D characters. If you like JRPGs, that's fine. There is obviously a market for them, but I personally am not a fan.
Out of the Western RPGs, I'd say CRPGs are my absolute favourite. CRPGs being Canadian RPGs (Read: Bioware). Bioware is my favourite developer, and, for me, makes the best RPGs on the market. I love 'em.
Beyond that, I enjoy anything that's fun. If it's RTS, FPS, Sim, whatever.
If I'm having fun, I'll play it.