downloading -
Yeap, somehow turned this into a hobby. My internet connection is never idle. I'm always grabbing something out there.

music -
Been DJ'ing for 16 years now. (free mix in the sig btw)

gaming -
360, PS3, Wii, PSP, NDS, etc ... I'm on Halo 3 99% of the time though. h:

cleaning -
Not really a hobby, but I'm constantly doing it.

collecting -
Not so much now-a-days because I'm content, but it's something I still poke into.