Hard rock- Zeppelin, Ozzy, GNR, Van Halen, etc...
Classic Rock- not that much really, but definatly Beatles and Stones, maybe some Dead
Blues- well, all of it really
80s shred- Satriani, Vai, some Malmsteen
Classical- An incredibly satisfying form of music to play, but I prefer:
Flamenco- and most of all:
Celtic- I love this type of music. It's the most serene and beautifull form I can think of, it begs to be played in the middle of the forest or by a riverside or somethin'.