Art, music, books, parties, boys, sex *cough* shopping, clothes, fashion... teenage stuff.
Your mum.
3 Doors Down, The Academy Is..., Aerosmith, All American Rejects, Alter Bridge, Arctic Monekys, Ash, The Avalanches, Avalon Drive, Barenaked Ladies, The Beatles, Black Crowes, Blink 182, Blur, Bowling For Soup, Box Car Racer, Brand New, Brand New Immortals, Bright Eyes, The Calling, Coheed & Cambria, Cornershop, Counting Crows, Cursive, Damien Rice, Daniel Powter, The Darkness, Darren Hayes, Dashboard Confessional, Death Cab For Cutie, Dexter Freebish, Dido, Dishwalla, Dogs Die In Hot Cars, The Dust Brothers, Eels, Elastica, Emery, Eric Clapton, Evanescence, Everclear, Fall Out Boy, Familiar 48, Feeder, The Feeling, Foo Fighters, Fountains of Wayne, Franz Ferdinand, From Autumn To Ashes, Funeral For A Friend, George Michael, GooGoo Dolls, Gorillaz, Greenday, Hard-Fi, HIM, Hundred Reasons, Idlewild, Incubus, InMe, James Blunt, Janes Addiction, Jason Mraz, Jet, Jimi Hendrix, Jimmy Eat World, John Lennon, Johnny Cash, José Gonzalez, Journey South, KT Tunstall, Kaiser Chiefs, Keane, Kelly Clarkson, The Killers, The Kooks, Lene Marlin, Lemon Jelly, The Libertines, Lifehouse, Lostprophets, Louis XIV, Marilyn Manson, Maroon 5, Matchbox 20, Me First And The Gimme Gimmes, Mike and the Mechanics, Million Dead, Motion City Soundtrack, Muse, Nickelback, Nirvana, No Doubt, Oasis, October Fall, The Offspring, Orson, Panic! At the Disco, Pixies, Phantom Planet, Placebo, Plain White Ts, Puddle of Mudd, Pulp, Queen, QOTSA, The Raconteurs, Radford, The Rasmus, Razorlight, Red Hot Chili Peppers, Reef, Reel Big Fish, REM, Robbie Williams, Rolling Stones, Rooster, Santana, Savage Garden, Seal, Semisonic, Sister Hazel, Sixpence None The Richer, Slipknot, The Smiths, Snow Patrol, The Spill Canvas, Staind, Stereophonics, Sting, The Stranglers, Streetlight Manifesto, Sugarcult, Sum41, Supergrass, Switchfoot, System of a Down, Taking Back Sunday, Theory of a Deadman, Third Eye Blind, Thrice, Tonic, Travis, U2, Uncle Kracker, Velvet Revolver, Weezer, The White Stripes, Yellowcard and probably a load of others I forgot.
Snatch, Fight Club, Finding Neverland, Hear My Song, Captain Corelli's Mandolin, Batman Begins, Queen of the Damned, Pirates of the Caribbean
The Farseer trilogy by Robin Hobb, His Dark Materials trilogy by Phillip Pullman, The Belgariad/Mallorean and The Elenium/Tamuli by David Eddings, Adrian Mole books by Sue Townsend, Harry Potter books by JK Rowling, Sabriel, Lirael and Abhorsen by Garth Nix, Artemis Fowl books by Eoin Colfer, The Hitchhikers' Guide series by Douglas Adams, Caper Court books by Caro Fraser, anything by Jilly Cooper, To Kill A Mockingbird... and I'm sure there's some I forgot. Catch-22 by Joseph Heller's good too...