Writing, reading, harm reduction, learning, arguing, sleeping, serial killers/the criminal mind, psychology, dark humor, the internet.
People who are: intelligent, sarcastic, open-minded, tolerant, unique, like-minded, spontaneous. People who aren't: cookie-cutter, pretentious, superficial, blatantly stupid, overtly religious, prejudiced, narrowminded.
Tori Amos, Pink Floyd, Poison, The Cure, Depeche Mode, Hooverphonic, Def Leppard, GNR (but I HATE Axl Rose), Motley Crue (but I hate Vince Neil), Velvet Acid Christ, Tears for Fears, etc. Hair metal, anything from the 80s, classic rock, oldies, triphop, synthpop, electroindustrial, etc.
Requiem for a Dream, Gia, The Wall, The Exorcist, The Life of David Gale, Poison Ivy, Go, Groove, Labyrinth, The Princess Bride, The Neverending Story, Alice in Wonderland, The Basketball Diaries, Head, Rock Star, The Ring, 28 Days Later, The Amityville Horror, Pet Sematary, (most cheesy horror films), The Stepford Wives, Silence Like Glass, The Breakfast Club, Clerks, Fight Club, Natural Born Killers, etc.
Anything by Poppy Z. Brite (particularly Drawing Blood, Wormwood, and Exquisite Corpse), Prozac Nation and Now More Again by Elizabeth Wurtzel, Girl Interrupted by Susanna Kaysen, Queer and Junky by William S. Burroughs, older Stephen King, Neverwhere and American Gods by Neil Gaiman... good horror fiction, true crime, drug literature, books about mental illness.