I listen to everything, literally...

Let's start off with old music: The Sex Pistols, Deep Purple, Beatles (not the stones), The Clash, The Who, Madness, Guns n Roses

90's, best era imo: Nirvana, Faithless, Oasis, Blur, Radiohead, The Verve, Apollo 440, Anouk, Deus, Cranberries

Recent music: Foo fighters, Red hot chili peppers, Kaiser Chiefs, Basement Jaxx, Gorillaz, Dido

Punk Rock: Aiden, Greenday, Blink182, Millencolin, My Chemical Romance

Electro: Daft Punk! Alter Ego, Audio Bullies, Fischerspooner, Freemasons
Techno, Trance: Yves Deruyter, Marco Bailey, Moby, DJ Dark E, Dave McCullen, Pragha Kahn
House: Armand Van Helden, Tiesto, Bob Sinclair, Tranceball

Hip Hop: Outkast, Cypress Hill, Dog Eat Dog, Eminem, Redman, 50 cent, Sean Paul
R&B: Young Rome, Faith Evans, Rihanna, Leki, Pussycat Dolls

Metal/Hard Rock: Magnapop, Lordi, Channel Zero, Guano Apes, CKY, Offspring, Motorhead, KoRn, Heideroosjes

And lots more probably, this is just a hint of my (more or less commercial) interests. I also organise rock shows for local rookie bands, so I'm kinda involved in the underground scene (mostly hardcore, punkrock, emo, etc)