Hrm... many things. Music, Psychology, History, Warfare, Pharmacology, Philosophy, Theoretical Physics, Video Games, Computers, Cooking/food, Chemistry, Books about fantasy, sci-fi, and crime/mystery.

This is all the bands I listen to a lot. I like many different kinds of music including all metal, some rock, classical, a few kinds of techno like hardcore, trance, dark wave, psychedelic. This list is alphabetical and not in any order based on favorites.

311, All That Remains, Amon Amarth, As Blood Runs Black, At The Gates, Audioslave, Between The Buried And Me, Depeche Mode, The Black Dahlia Murder, Bloodbath, Bloodhound Gang, Breaking Benjamin, Buckcherry, Bury Your Dead, Chevelle, Children of Bodom, Chimaira, Dark Tranquility, Deftones, Devildriver, Disturbed, Dope, Dragonforce, Dry Kill Logic, Element Eighty, Evans Blue, Fatboy Slim, Fear Factory, Ghost Machine, Guns N Roses, Hatebreed, I Killed The Prom Queen, In Flames, Infected Mushroom, Johnny Cash, Juno Reactor, KMFMD, Korn, Lamb of God, Lordi, Lynyrd Skynyrd Mudvayne, Mushroomhead, Nightwish, Nocturne, Opeth, Outkast, Pink Floyd, The Project Hate MCMXCIX, Ra, Radiohead, Ratt, Rage Against the Machine, Red Hot Chili Peppers, Shadows Fall, Slayer, Slipknot, Smashing Pumpkins, Soilwork, Staind, Stone Sour, Stone Temple Pilots, Sublime, Sugar Ray, System of A Down, The Darkness, The Faceless, The faint, The Offspring, The Rolling Stones, Tool, Unearth, Velvet Acid Christ.