Wait, besides sci-fi? HHmm.... this could be a toughie.
Well, being the geek that I am I'm usually found reading or playing around with programming code. Right now I'm involved with teaching myself to do different things with PHP on the web server. I know I'm driving the wife nuts with how much time I've been spending online but playing with code is my stress reliever in life. Occassionaly I like playing in the kitchen -- For a wedding present we received a Kitchenaid mixer that makes life a lot easier.
HHmm.... I thinking I need to find some new hobbies.