If I had to completely abandon all of my past rationalization and generalize like a mother', I'd say I listen to just about everything but (Pop) Emo and (Pop) Country. There are a few underground/older gems, but as a whole these two genres don't do it for me. I listen to a lot of Metal (sub-genres too), seeing as how I was raised on it. A couple of years ago, I started to get into quite a bit of Rap/Hip-Hop, and more recently, I'm listening to a lot of Punk. I'm into Ska and Jazz and Big Band stuff, being a trumpet player myself. Throw some Blues in there too. I like a lot of Indie, and some Poppy stuff like Ben Folds and Sara Bareilles. I've got a list of (pretty much) all of the bands and artists I listen to, around somewhere. I'll post it if I can find it. In fact, I'll look for it before I post this, in order to minimize double-posting.
Aha! Here we are:
In Flames, Opeth, Anata, Nirvana, Passenger, Shadows Fall, Dead Prez, Probot, Subway to Sally, Mastodon, Therion, Ulver, Bobaflex, The Real McKenzies, Aceyalone, Soil, Corrosion of Conformity, Dream Theater, War, The Doors, Brujeria, Jillmax, Sonic Boom Six, Scar Symmetry, Bloodbath, Hatebreed, Witchery, The Butterfly Effect, OAR, Soul Embraced, Becoming the Archetype, Nickel Creek, Death Cab for Cutie, Samael, Dark Tranquility, Gwar, White Stripes, Motorhead, Mountain Goats, WolfMother, Jimi Hendrix, The Abyss, Unearth, Amon Amarth, Diecast, Audioslave, The Killers, Gojira, Tankard, White Zombie, Echopriest, Fluke, Sevendust, System of a Down, The Tossers, UVERworld, Smashing Pumpkins, DevilDriver, Darkest Hour, The Agony Scene, Danzig, Pitbull, Freezepop, Atheist, Tenacious D, Crossbreed, Dantallion, Symphony X, Ben Folds Five, Spineshank, Chris Thile, Count Zero, KoRn, Aerosmith, These New Puritans, Pain, Voodoo Glow Skulls, Nena, Children of Bodom, Project Sideways, Fallen Fate, Digable Planets, Raised Fist, Voodoo Glow Skulls, Pantera, StoneSour, Megadeth, Within Y, Drowning Pool, Rage Against the Machine, Killswitch Engage, Cumshots, The Who, REM, Gorillaz, Trans-Siberian Orchestra, Fishbone, Ben Kweller, David Byrne, Gackt, Zager & Evans, Suburban Legends, Immortal Technique, Dirtbag, The Distillers, Swallow the Sun, Turbonegro, Beastie Boys, Drist, Abstract Rude, Graveworm, AWOL One, Aesop Rock, Embers Arise, Chimaira, Origa, Kittie, Dimmu Borgir, Styx, Demon Hunter, Anti-Flag, Draconian, The Ziggens, The Drugstore Cowboys, Motograter, Black Sabbath, Universum, Dimension Zero, Chris Botti, Callenish Circle, Charon, Toadies, Mad Ball, Damian Marley, Living Sacrifice, Camper Van Beethoven, Yoko Kanno, 311, Almost is Nothing, Samadhi, Sondre Lerche, Metallica, Public Enemy, Guttermouth, Iron Maiden, Flyleaf, Chimaira, Alabama Thunderpussy, Colbie Caillat, Living Colour, Dethklok, The Human Abstract, India Arie, Periphery, Deep Purple, Electric Six, 40 Below Summer, Cinders Fall, Oomph!, Ozzy Osbourne, Black Label Society, Dissection, Colin Hay, Blinded Colony, Paul Pena, Filibuster, Iron & Wine, Bargain Music, Dry Kill Logic, Suicidal Tendencies, Filter, Disturbed, A Perfect Circle, Ilaria Graziano, Queens of the Stone Age, Gnarls Barkley, Bob Marley, Fiction Plane, Apocalyptica, Diablo, Sufjan Stevens, Up Syndrome, Soilwork, Sikth, Anthrax, Hot Action Cop, Ludacris, Five-Finger Death Punch, Clutch, Gogol Bordello, Spider Bait, Centuries Cry, Hurt, Skindred, The Eagles, Half Pint, Los Lobos, Nightwish, Karnivool, Scott Matthew, Velvet Revolver, Hide, Rob Zombie, An Endless Sporadic, Black Star, Nightrage, Dirty Rotten Imbeciles, Mudvayne, Deicide, J-Live, Ingrid Michaelson, Lamb of God, Rancid, Judas Priest, Senses Fail, Limp Bizkit, Skinlab, Fair to Midland, Matisyahu, Avail, Fountains of Wayne, Gift of Gab, Profugus Mortis, Death, Flaw, The Offspring, Red Hot Chili Peppers, Damageplan, The Ziggens, Matchbox Twenty, Misery Index, Tech N9NE, Hatebreed, Jillmax, Transducer, Filter, No Doubt, Sara Bareilles, Animetal, Catamenia, Silent Civilian, Elliot Smith, Fear Factory, Cult of Luna, Mozaiq, Yakuza, Dark Suns, Spearhead, Geto Boys, Crossfade, The Suicide Machines, Sacrilege, Hanzel und Gretyl, Cronos, G Love, Oasis, Construcdead, Bowling for Soup, Combichrist, Eluveitie, Wednesday 13, The Section Quartet, Joe Satriani, Wu-Tang Clan (And Individual MC's), Virgin Black, Deadstar Assembly, Powerman 5000, Celtic Frost, Sonic Syndicate, OPM, 8 Ball, The Blanks, Backyard Babies, Grailknights, Swallow the Sun, Stone Temple Pilots, Life of Agony, The Strokes, The Seatbelts, Soulfly, Coal Chamber, As I Lay Dying, Eve 6, Atmosphere, Ozomatli, Oreskaband, Matchbook Romance, Ephel Death, If Hope Dies, Nocturnal Rites, Hypocrisy, Bolt Thrower, NOFX, Fuel, Eric Hutchinson, Unleashed, Greyboy Allstars, Purified in Blood, Five.Bolt.Main, Cake, Collective Soul, The Raconteurs, Morbid Angel, Be'lakor, Joe Budden, Swift, God Forbid, Darkseed, Carcass, Vader, Streetlight Manifesto, Eucharist, Trust Company, Darkane, The Fall of Troy, Rooney, Celldweller, Stratovarius, Sonata Arctica, Ayreon, Into Eternity, Evergrey, Norther, Nevermore, Static-X, Susperia, Revolverheld, Agalloch, Moonsorrow, Ensiferum, Vikingmat, Pennywise, Finntroll, Meadows End, Prototype, Rolling Stones, Eric Johnson, Nas, Muse, The Living End, Kryterium, Arsis, Sepultura.
Feel free to go to town with the YouTube'ing.
Note to Mods: If my post is too long, which I don't expect it to be, edit away. Not intentionally trying to clutter this thing.