Photography, books, music, painting, computers, games, puzzles, sports, cars, body boarding, movies, most of the normal and not so normal stuff people do.
Mostly I think the people I already know. I could list a bunch of famous people but really, they're just people in the end, generally not more or less interesting than anyone else around you.
In no particular order:
TOOL, Train, Foo Fighters, Green Day, Ray Charles, Bobby Darin, B.B. King, Buddy Guy, Jimi Hendrix, Imogen Heap, Aphex Twin, Gary Jules, Elliott Smith, Staind, Tori Amos, Fisher, The Platters, Etta James, Billy Holiday, Jeff Beck, Eric Johnson, Sarah McLachlan, The Mars Volta, Blues Traveler, always looking for something new.
Shawshank Redemption, Million Dollar Baby, Pulp Fiction, Kill Bill, Casablanca, Lost in Translation, Eternal Sunshine of the Spotless Mind, Vanilla Sky, Killing Zoe, Taxi Driver, Suicide Kings , Boondock Saints, Wings of the Dove, Groundhog Day, Army of Darkness, Miller's Crossing, Charade, Freeway.
Art of War, Collected works of Confuscius, and anything by Dickens, Twain, or Nick Hornby.