I pretty much listen to whatever sounds good to my ears. The ones I tend to like more then others are Classical, Rock, Metal, Jazz, Blues, and Japanese music, along with anime OST's...sometimes...
I don't know if someone has mentioned it yet but Rachmaninov piano concerto no.2 FTW!! most incredible piece of classical music, and when you know the story behind it even more moving and incredible the 2nd and 3rd movements are best!