Music
Aerosmith, Billy Joel, Boston, Don Henley, Electric Light Orchestra, Elton John, Fleetwood Mac, Genesis, George Thorogood and the Destroyers, Huey Lewis and The News, Jethro Tull, John Mellencamp, Kansas, Led Zeppelin, Lynyrd Skynyrd, Paul Simon, Peter Gabriel, Phil Collins, Pink Floyd, Queen, Santana, Supertramp, The Beatles, The Doors, The Eagles, The Who, Tom Petty & The Heartbreakers, U2, Van Halen, ZZ Top
As you can see, I like classic rock. I also like classical (including collecting film scores, which is a big hobby of mine), and I'm starting to get into some more modern rock. Having once been a student of music, I'm pretty eclectic, though, and can probably listen to just about any kind of music.
Movies
The Abyss, Aliens, Clue, Dave, Die Hard, Die Hard 2, Down Periscope, The Fugitive, Ghostbusters, The Goonies, Hudson Hawk, The Hunt for Red October, Independence Day, Innerspace, Jurassic Park, Krull (kudos and you fkin rock if you've seen it), Labyrinth, The Land Before Time, The Lord of the Rings trilogy, The Mask of Zorro, The Matrix, Mr. Holland's Opus, The Nightmare Before Christmas, The Patriot, Pulp Fiction, Soldier, Spider-Man trilogy, Spies Like Us, Stakeout, Stakeout 2, Star Wars (original trilogy), Stripes, Total Recall, Toys, Tremors, Twister, Willow
Those are just some of my favorite movies. As you can see, I have rather eclectic tastes, though I tend to prefer action, sci-fi, and fantasy. Also, I love any movie based on a John Grisham novel.
As for television, I like all three CSI shows, Firefly (and Serenity), Star Trek: The Next Generation, Quantum Leap, and all of the Law & Order shows. However, I prefer to watch the Discovery Channel, Animal Planet, and the Science Channel. Yep, I'm geeky like that.
Video Games
Some Star Wars games, Pharaoh, the Final Fantasy series (IV, VI, VII, & IX are my favorites), Loom, some others
I tend to like games in the genres of sci-fi and fantasy the most.