If you don't know, then it's probably not you.
Atmosphere, Beck, Bright Eyes, Broken Social Scene, Brother Ali, Coldplay, Death Cab for Cutie, The Decemberists, Interpol, The Killers, Laura, Lucero, Modest Mouse, Nada Surf, Neko Case, Neutral Milk Hotel, POS, The Postal Service, Radiohead, Rilo Kiley, Sage Francis, The Shins, Van Morrison, The Vines, Weezer, The White Stripes, Wilco, Yeah Yeah Yeahs...
300, Amelie, America Beauty, Batman Begins, Benny and Joon, Big Fish, Clerks, Crash, Crouching Tiger Hidden Dragon, Eternal Sunshine of the Spotless Mind, Fight Club, Garden State, The Gods Must be Crazy, Hero, Igby Goes Down, The Increadibles, The Italian Job, the Kill Bill's, Kung Fu Hustle, The Land Before Time, Life if Beautiful, Lost in Translation, Me and You and Everyone We Know, Monster, Monster's Ball, Monster's Inc, The Motorcycle Diaries, Moulin Rouge, Punch Drunk Love, Ray, Rebel Without a Cause, Requiem of a Dream, Run Lola Run, Se7en, Shanghi Knights, Shanghi Noon, Shaun of the Dead, Shrek, Sin City, Snatch, the Spiderman movies, Stranger Than Fiction, the Superman movies, Taladega Nights, Talk to Her, , the X-Men movies, etc.
The Simpsons, Seinfeld, Heros, Grey's Anatomy, Desperate Housewives, Family Guy, Numb3rs, the CSI's, House, Mythbusters, etc.
The Illiad, Greek mythology in general, Pride and Prejudice, The Picture of Dorian Gray, Lolita, anything I've read by David Sedaris, and the Complete Collection of Calvin and Hobbes.