Scrolling through iTunes reveals:
Afro Celts, Tori Amos, Antiloop, David Arkenstone, Balligomingo, The Band, Barenaked Ladies, The Birthday Massacre, Blackmore's Night, Blue Stahli, Booka Shade, Bowery Electric, Savoy Brown, Buckethead, Buckwheat Zydeco, Budgie, Cake, Camper van Beethoven, Johnny Cash, Celldweller, Clannad, The Clash, Les Claypool, Roger Clyne and the Peacemakers, The Cocteau Twins, Albert Collins, Concrete Blonde, Elvis Costello, Cowboy Mouth, The Cranberries, Creedence Clearwater Revival, The Crystal Method, Cusco, Daft Punk, The Dandy Warhols, Dead Can Dance, The Dead Milkmen, Delerium, Dido, Dire Straits, Thomas Dolby, The Dropkick Murphys, Duran Duran, E.S. Posthumous, Enya, The Fabulous Thunderbirds, soundtracks to Overlord/Final Fantasy/Fahrenheit/Black Hawk Down/The Incredibles/Sins of a Solar Empire/Gurren Lagann/Waterworld/Hitman 2/V for Vendetta/Battlestar Galactica/Serenity/Conan the Barbarian (the real one, not the disastrous remake from last year)/Dawn of War/Torchlight/Bleach/The Cell/Lord of the Rings/Dune/Gladiator, The Firesign Theatre, The Flaming Lips, Flogging Molly, Fluke, John Fogerty, Foreigner, Foster the People, Frou-Frou, Peter Gabriel, Garbage, Goldfrapp, Gorillaz, Gravity Kills, The Guano Apes, Emmylou Harris, Imogen Heap, John Hiatt, Hooverphonic, Bruce Hornsby, Human League, Ima Robot, INF, Information Society, The J Geils Band, J Ralph, Joe Jackson, Jean-Michel Jarre, Jem, Norah Jones, Juno Reactor, The Killers, King Missile, Leo Kottke, Kraftwerk, Lacuna Coil, Ladytron, Huey Lewis & The News, Lionrock, Live, Lordi, The Lords of Acid, Luscious Jackson, Man...or Astro-Man?, Manowar, Massive Attack, Mazzy Star, MC 900 Ft Jesus, Loreena McKennitt, Medieval Baebes, Ministry, Modest Mouse, Monster Magnet, Coco Montoya, Morcheeba, Morphine, My Bloody Valentine, Alannah Myles, Nightmares on Wax, Nightwish, No Doubt, Paul Oakenfold, The Offspring, Oingo Boingo, Old Blind Dogs, Ozric Tentacles, Pendulum, Tom Petty, Liz Phair, The Pixies, Pop Will Eat Itself, Portishead, Praxis, Prodigy, The Propellerheads, The Radiators, Lou Reed, Runrig, Rustic Overtones, Joe Satriani, Shriekback, Paul Simon, The Sisters of Mercy, Sleepthief, Sleigh Bells, Sneaker Pimps, Soul Coughing, Soundgarden, Regina Spektor, Stone Temple Pilots, Sublime, Tenacious D, Thievery Corporation, Richard Thompson, The Toasters, Tool, Tricky, Type O Negative, VAST, Suzanne Vega, Violent Femmes, Tom Waits, Ween, Weezer, White Zombie, The Who, Within Temptation, Worm Is Green, Yellowcard, Zero 7, Zeromancer, Warren Zevon.
And that's just the stuff I felt like listing.