I will list bands, musicians, and composers I dig in no particular order and it is expansive mind you.

Ac/Dc, Meatpuppets, Led Zeppelin, Slayer, Metallica, Judas Priest, Motorhead, Nirvana, Sonic Youth, The Ventures, Eric Clapton, Jeff Beck, Stevie Ray Vaughn, The Outlaws, Cheap Trick, Megadeth, System of a Down, Kiss, Black Sabbath, Alice in Chains, Foo Fighters, Daryl Hall, Elvis Costello, Bad Brains, Stormtroopers of Death, Iron Maiden, Bob Dylan, David Bowie, Bach, Frank Zappa, Jucifer, Rancid, Lars and the Bastards, Veruca Salt, Trouble, Rush, Bush, Green Day, Evan Dando and The Lemonheads, Belly, Tanya Donelly, Jeff Baxter, John Prine, Johnny Cash, The Fixx, The Cars, Nina Gordon, Iggy Pop, Spirit of Blood, Kyuss, Soul Asylum, Matthew Sweet, Mozart, Beethoven, Neil Young, Todd Rundgren, Ministry, Deep Purple, Pink Floyd, Agent Orange, The Vandals, Dick Dale, Los Strait Jackets, The Offspring, Deicide, Social Distortion, Gary Moore, Wilco, Guttermouth, Scorpions, UFO, Thin Lizzy, Red Hot Chili Peppers, Pearl Jam, Soundgarden, Fastball, Rolling Stones, ELO, Danny and The Juniors, Jimi Hendrix, Robin Trower, Nick Mason, Stravinski, Verdi, Johan Sebastian Strauss, Heart, David Gilmour, Killing Joke, Type 'O' Negative, The Used, Dead Kennedys, Medeski MArtin and Wood, Otis Redding, Link Wray, Brad Paisley, Steve Vai, The Mothertruckers, Missing Persons, Depeche Mode, Death Angel, Savatage, Morphine, Heroin Death Squad, Governors Brew, Looks Will Kill, L.P. Trixie, Black Landau, Pope Salad, Machine Head, William Corgan Jr. Desmond Child, Jason Becker, Frank Gambale, The Iguanas, Blue Cheer, Pixies, Garbage, Filter, Audioslave, Slammin' Watusis', Bad Company, Belle and Sebastian, The Call, The Doors, Jefferson Airplane, Talking Heads, B 52's, Def Leppard, Queens of the Stoneage, Five Finger Death Punch, Pandorica, Goblets of Dew, Strange Vibromatics, Death to Sinners, Pestilence, Wendy Carlos, Tommy Shaw, Warren Zevon,