Composing, playing, recording, and mixing music.
Reading religious, spiritual, philosophical, mythology, and psychology books and writing about what I learn and my view points on me site.
The third post in this thread was a profitable venture I delved into many years ago.
I've also picked up chess lately.
I love the shit out of role-playing games, but left all that alone to pursue the real life role playing game of business. I'm psyched reading about the Mists of Pandaria expansion lately. The Chinese finally decided to back off of that issue I guess.
I spank it any time I can. I like to spank it in the craziest places. I think I already out did myself though. I once beat it in a nuclear plant. I'll never top that. 2nd pew of church didn't even top that one.