Open to pretty much anything. My big three are:
Metal. Heavy, Death, Black, Power, and everything in between. You name it I pretty much like it, even some of the -core stuff.
Electronic. Dubstep, Chillstep, Drum and Bass, Tropical House, House. I like it all man, helps me get pumped, but can also keep my chill.
Instrumental/OST. Nothing like a game OST, or a show OST to getcha in the mood. Instrumentals, and OSTs are a favorite for when I'm in an imaginative mood.
Aside from those however, pretty much anything floats my boat from Country to Rap to Metal and so forth.