Computers to the fucking max! How big of a nerd am I? I can control my house with my iPod, my Dell laptop dual-boots Mac OS X and Windows XP, My PS2 has terminal server and I rock T-shirts with Pac-Man on 'em.
Cyberpunk themed stuff, movies (I'll hit you with an obscure movie quote every 3-5 minutes), mucking around my music studio, figuring out new ways to make shit work in fucked up ways.
Oh, and audaciously awesome alliteration aimed at acquiring accolades :D
Underground Hip-Hop like Aesop Rock, El-P, The Mighty Underdogs.
Electronica and Industrial (Aphex Twin, Assemblage 23, Squarepusher).
Off-the-wall shit like Mindless Self Indulgence (Yea, I liked em BEEEFFOOOOOREEE they got popular and I gots the autographs to prove it!).
Then your standard Rock stuff.. too many examples to list.
Hrmm.. Odd and artsy games like Killer7, Metal Gear Solid Series, all types of adventure and RPG types. I'll rock your face in Rock Band (on drums anyway). Fuck, I still like those old text adventure games (Bonus points if you know what a "grue" is.