Music:
Progressive/goth metal, hard rock, and artsy/indie pretty much covers it. Anything dark.
Specifically?
Tool, A Perfect Circle, Queens of the Stone Age, Radiohead, Type O Negative, Rage Against the Machine, Green Carnation, Opeth, Dream Theater, In Flames, Ra, H.I.M, Moonspell, Disturbed, Lacuna Coil, Alice in Chains, The Coral, Modest Mouse, Ambluance LTD, The Cinematic Orchestra.
Television:
The Daily Show is all you really need. And anyway, there's something about a short, quirky, jewish guy in a suit cracking political jokes that's absolutely irresistible. My guilty pleasures are Sex and the City and the West Wing.... and as for nerdy sci-fi shows? *cough* never!
Books:
Sci-fi, what else? Peter Hamiltion, Larry Niven, and Vernor Vinge are my favorites. George R.R. Martin has me hooked.
Heroes:
Neil Armstrong, Dick Feynman, Wernher von Braun, Tsiolkovsky.