personally i tend to stick to 80's metal and classical nowadays.
metal-
iron maiden (although their last album was pretty dissappointing)
black sabbath
dio
etc.
classical-
bach
tchaikovsky
beethoven
vivaldi(sp?)
etc.
also on occasion like some 'man or astroman', ventures, super suckers, dictators, murder city devils, gwar(mainly just for nostalgia now, i started listening to them when i was like 10, the first band i really liked), various cheesy new wave crap, other stuff i forget