Music, independent film, books, travelling, technology, etc.
JFK so that I can tell him to stay out of Dallas in '63.
Tool, Pink Floyd, Grateful Dead, Deftones, Unearth, Misfits, Danzig, Bill Monroe, Tony Rice, Hot Rize, Flatt and Scruggs, Guns N Roses, 80's Metallica, Miles Davis, Dick Dale, Herbie Hancock, Greyboy AllStars, James Brown, Parliament Funkadelic, Led Zeppelin, Tenacious D, Ween, Queens of the Stone Age, Bob Marley, Peter Tosh, Bunny Wailer, etc.
I'll list the directors I like because the movies are too numerous: Kevin Smith, Oliver Stone, Stanley Kubrick, Martin Scorsese, Francis Ford Coppola, Tim Burton, George Romero, Lloyd Kaufman, Danny Devito, etc.
Chappelle, South Park, Sopranos, Six Feet Under, Entourage, Comcast SportsNet, etc.
Hitchhiker's Guide to the Galaxy, Grapes of Wrath, Hearts in Atlantis, the entire Dark Tower series, but especially Wizard and Glass, Of Mice and Men, Fahrenheit 451, Hell's Angels, Fear and Loathing on the Campaign Trail '72, Cat's Cradle, etc.
Johnny Cash, Bob Dylan, and Neil Young. Because they did it their way.