Oh Yeah! A question I can relate to!

Hmm.. Let's start off with anything progressive rock/metal.
My absolute favorite is RUSH. Second would be Dream Theater.
Being an avid (psychotic) drummer, it's required that I idolize Neil Peart of RUSH.
I really enjoy fusion and jazz. Gotta love what Triiumvirat was putting out.

I'll listen to just about anything. Classical (Beethoven, Mozart, etc) is a favorite when I need to relax. The newest that I'm liking is Mudvayne and Slipknot.
There's a local radio station that plays alternative and the newer rock/metal.
I can listen to that constantly.

"Pleasure leaves a fingerprint as surely as mortal pain."
Neil Peart, Scars