I'm a concert junkie.
Well, in "real life" I'm a programmer, working in speech technology. Thus basically teaching your computer to talk to you.
My free time I normally spend listening to music or composing webpages. Mostly composing webpages about music.
If there's still some time left, I use it to learn languages. I'm currently trying to decide which language to tackle next... if anybody has a suggestion, tell me. But it must fit in nicely with German, English, Portuguese, Norwegian and passive French.
Oh, and the rest of the time you can find me at some concert. It's the best way to pass your time and enjoy yourself. I'm a concert junkie.