MUSIC! Science and science-fiction. (Any and all things TREK!) Lasers. Firearms and firearm politics. Civil liberties and church-state separation issues. Non-classical (read "armchair") philosophy.
Classic, alternative, southern, heavy metal... any and ALL kids of Rock & Roll! I'm also a big fan of a cappella music and '80s style retro/new wave.
Anything and everything Stephen King. "The Demon Haunted World" by Carl Sagan. "God Is Not Great" by Christopher Hitchens. "The Rape Of The A*P*E*" by Alan Sherman.
Favorite TV shows
Dexter, Criminal Minds, CSI (any and all varieties). Any flavor of Star Trek. Homeland (and anything else with Clair Danes)!
Alien, Alien 2, 2001: A Space Odyssey, ALL Trek movies (2 and 3 being my favorites), ALL Star Wars movies (the first [pt 4] and second being my favorites), Westworld, Silent Running, Carrie, Rollerball (the original 1975 version), Logan's Run, Stargate, The Exorcist (original).