Music, video games, weightlifting, reading, ancient warfare, computers and some other random stuff.
Music:
Korn, Disturbed, Godsmack, Mudvayne, Slipknot, System of a Down, A Perfect Circle, Metallica, Nirvana, Rammstein; other than that, most rock and a (very) little rap.
Movies:
A Few Good Men, Men of Honor, Fight Club, Blade (original, II, and Trinity), Super Troopers, V for Vendetta, The 13th Warrior, and Constantine to name a few favorites.
Television:
Channel surfing stopping spots-- TBS, MTV, Discovery channel, TNT, Spike TV, VH1, USA, Comedy Central, FX, and Cartoon Network for Family Guy and Futurama.
Books:
Gates of Fire, The Art of War (Sun Tzu), Art of War (Machiavelli), The Vision of Nietzsche, and the StarCraft, Warcraft, and Diablo series'.
Heroes:
Nietzsche, Machiavelli, and the Spartan King Leonidas and his 300.