Well I listen to almost all rock music (there's a little bit of rap and disco in there and classical). However, the genres I am most fond of are punk rock and industrial rock. Really, it depends on the mood.
If you go on my playlist on my Spill profile, you can see how diverse I can get with music. Of my main circle of friends back home, I'd say I'm the most diverse. No question.
Industrial/EBM/Synthpop/Future Pop: VNV Nation, In Strict Confidence, Skinny Puppy
Progressive Rock/Metal: Opeth, Arena, Marillion
Movie Scores: Thomas Newman, Hans Zimmer