Guitar playing, computers, games, home theater systems, cars (fast ones, preferably).
Music:
Dream Theater, Joe Satriani, Steve Vai, Rob Zombie, Nightwish, Poets of the Fall, Mark Knopfler, Eric Clapton, Children of Bodom, Black Sabbath, Deep Purple, Rainbow, Amon Tobin, Moby, Clannad, U2, Lacuna Coil, Within Temptation, Tom Waits, Katatonia, In Flames, Atlantiksen Arvoitus, Blackmore's Night
Television:
24, Battlestar Galactica, The Unit, Stargate SG-1, Stargate Atlantis, Heroes, Drive, Wanted, Mythbusters