Reading, drawing, old-school SNES video games, Hordes, Dungeons and Dragons, other general geekiness, Boston Air Hockey, and most anything involving animals and me being outside.
Active, intelligent people. They can be a little weird, also. Cool weird, though; not uncomfortable weird.
I'll enjoy pretty much anything that isn't country, though I'm not the largest fan of either rap rhythm and blues. Some country songs are good, like many by Johnny Cash, but most seem whiny to me, and I can't abide whiners.
Anything with a good plot and/or cool looking creature in it. Live-action or animated (or claymation, though I guess that's still animation, just of a different sort). Musicals are a-okay. I have little tolerance for modern dramas or slasher flicks. If I wanted to see people kill each other I'd watch the news.
Pretty much all I watch right now is Adult Swim, though certainly not religiously. Current favorites in that line-up include Family Guy and Full-Metal Alchemist. I am a large fan of series no longer in production, including Firefly, Neon Genesis Evangelion, Cowboy Bebop, and Buffy the Vampire Slayer.
Most anything fictional, though I prefer that it possess some sort of fanciful element, be it magical or technological in nature. Some favorite novels include The Time Machine, the Harry Potter series, and The Chronicles of Narnia.