Hmmm. let's see, my favorites right now are Porcupine Tree, Placebo (addicted to their cover of "Running up that hill"), Pulp, Interpol, Muse
my all time favorites are Queen, David Bowie, Crowded House, Garbage, Foo Fighters
in general I like almost anything that has a melody and lyrics, I don't usually listen to techno/house/dance (although there are some exceptions from Fatboy slim and The chemical brothers) and sometimes I can like pretty silly things (like Army of lovers, Aqua and the Portal song (which is currently my ringtone
))