Electronic:
Hixxy, DJ Sy, Dougal, Gammer, Pendulum, Dieselboy, Breakbeat Era, DJ Dara, DJ Hype, Ed Rush & Optical, Shy FX, Adam F, Noisia, Shape Shifter, Andy C, Evol Intent, Rise, Aphex Twin, LTJ Bukem w/ MC Conrad, Carl Cox, Sasha, The Chemical Brothers, Crystal Method, and Prodigy.

Hip Hop:
A Tribe Called Quest, Aesop Rock, Afrika Bambataa, Arrested Development, Beatnuts, Common, Cypress Hill, De La Soul, Dead Prez, Deltron (Del Tha Funkee Homosapien), Dr. Octagon, Gang Starr, Goodie Mob, Grand Master Flash and the Furious Five, Guru, GZA, Immortal Technique, Jay-Z (at his best), Jurassic 5, Kanye West, Kool Keith, KRS-One (Boogie Down Productions), Lauryn Hill (mostly fugees), Leaders of the New School (Busta Rhymes), LL Cool J (old school), Lupe Fiasco, Marxman, Method Man, Mos Def, Nas, Outkast, The Pharcyde, Public Enemy, Q-Tip, Rakim, Redman, Run DMC, RZA, Saigon, Snoop Doggy Dog (early 90s), Talib Kweli, The Coup, The Fugees, The Roots, Wu-Tang Clan, Xzibit (pre-2001), Zion I)

Metal/Rock/Alternative/Industrial:
36 Crazyfists, 311, All That Remains, Avenged Sevenfold, Children of Bodom, Chimaira, Coal Chamber, Cradle of Filth, Danzig, Drowning Pool, Dry Kill Logic, Five Finger Death Punch, Hope for the Dying, Ill Nino, In Flames, Incubus, Iron Maiden, Killswitch Engage, KMFDM, Korn, Lacuna Coil, Lamb of God, Linkin Park, Machine Head, Marilyn Manson, Monster Magnet, Mudvayne, NIN, Pearl Jam, Powerman 5000, RATM, Rammstein, Rise Against, Rob Zombie, Saliva, Sepultura, Slayer, Slipknot, Soulfly, Static-X, System of a Down, Tenacious D, Three Inches of Blood, Trivium, and White Zombie.

Other:
Slighty stoopid, kotton mouth kings, twiztid, ICP, bob marley, ziggy marley, sublime