Anything that makes me learn. And Satan. Add him, he's really cool!
I would name some bands here, but I've already met most of them, so I'll just go with God. Any of them.
Fear Factory, Opeth, Rammstein, SYL, The Project HATE MCMXCIX, Mnemic, Goatwhore, Soilwork, In Flames, Slayer, Impaled, The Kovenant, Skinny Puppy, KMFDM, Suffocation, Leaves Eyes, Megadeth, Circle of Dust, Arch Enemy, Dimmu Borgir, Dream Theater, Red Harvest, Clutch, Primus, Type O Negative, Moonspell, Cannibal Corpse, Bongzilla, Down, Pig Destroyer, Dying Fetus, Scar Symmetry, Susperia, Nevermore, Life Of Agony, Flaw, the Haunted, N.I.N., Scrape, God Dethroned, Old Man's Child, White Zombie, Marilyn Manson, Deadsy, Orgy, Old Korn, Coal Chamber, Sevendust, Les Claypool's Frog Brigade, Buckethead, Steve Vai, and anything that is real and heavy.
A Clockwork Orange, Monty Python and the Holy Grail, FFVII: Advent Children, Evil Dead, all Hellraiser movies, Naked Lunch, Altered States, One Flew Over The Cuckoo's Nest, The Craft, The Order, The Omen, The Prophecy, Faces of Death, all movies by M. Night Shamylan, The Addams Family, all Adam Sandler movies, The River's Edge, and The Lion, the Witch, and the Wardrobe.Oh, and I LOVE ANIME!
Aeon Flux, UFC, Viva la Bam, Uranium, Headbanger's Ball, Beavis and Butthead, Inuyasha, Ghost in the Shell: Stand Alone Complex, Full Metal Alchemist, Aqua Teen Hunger Force, Tales From the Crypt, the 4400, old Doctor Who, Lexx, Monty Python, Ripley's Believe it or Not, Fear Factor, the Munsters, the Addams Family, and Mystery Science Theater 3000.
All Warhammer 40K Books, Neil Gaiman, William S. Burroughs, H.P. Lovecraft, Edgar Allan Poe, Stephen King, C.S. Lewis, J.R.R. Tolkien, George Carlin, the Necronomicon, The Inferno, and alot of Manga.
Rob Zombie, Burton C. Bell, Klay Scott, Criss Angel, Ozzy, C.S. Lewis, H.R. Giger, H.P. Lovecraft, and, don't laugh, Hulk Hogan.