I love classical music, but I also like (and I blame FFR for this) Basshunter, The Black Dahlia Murder, and Animals As Leaders. It's an interesting combination of music. I'm 16 and male and awesome, and rather nerdish. It happens.
Very many things. Really, an absurd number of things. I hate anime in general but for some reason, I really love Studio Ghibli and everything ever produced by Hayao Miyazaki. It's rather strange. I'm a total amateur script-kiddy 4channer (minus the 4c**n lameness) and I'm very much into linux and the whole POSIX-compliant spectrum of distros. So, yeah.
CLASSICAL. I'm starting to get into 8bit and Trancecore, artists like Renard and Aliceffekt. Oh, and cornandbeans. I fucking love cornandbeans.
Everything by Stanley Kubrick, Christopher Nolan.
Hayao Miyazaki as well if he counts. Movies like A Clockwork Orange, Eyes Wide Shut, and Bladerunner are especially good. I really liked The Dark Knight and Inception.