Hehe i think i'm seeing a pattern here.
Anything but country and western, rap and dance/techno.
Oh and really poppy music. I cannot STAND the churned out indie stuff these days, Arctic Monkeys or The "insert random word here". Flooding the market doesnt even begin to describe the situation. *end of rant*
Then again i can give techno its due if im playing something like wipeout when you need something trancy with a beat to really get into the game, it helps to speed up the whole melting eyes process.
Other than those i listen to just about anything, especially getting into anime OSTs and delving into one of the bands behind a track or two.
A Perfect Circle, Tool, Nine Inch Nails, Miyavi, Asian Kung-Fu Generation, Muse, Imogen Heap, Gorillaz, Zero 7, Gomez, are my favs at the mo.