These days, mostly video game covers. Outside of those, I like a lot of prog stuff (rock, metal, folk), I like some jazz, and am usually a big fan of things incorporating orchestral/symphonic/acoustic instruments, etc.,
I don't know if it's a genre thing...it's mostly that I tend to like music that have a certain range of complexity -- music that is too typical/standard/safe tends to bore me (although I do have my guilty pop pleasures), but music that is too strange is also too difficult for me to keep track of. The range in between is the sweet spot.