Well, here is my list:
1. Discussion Forums: I obviously like to post and discuss with people about my ideas on various topics.
2. Book Writing: I have been working on a few novels as well as a few factual books.
3. Exercising: I don't do much hard core stuff partly due to problems I have with my joints and digestive tract, but I enjoy going for a good 4 mile or more walk and swimming for a while as well as lifting weights.
4. Singing: I'm not a professional by anymeans, but I am a long leader at my church and I enjoy singing. I have been in choirs and other groups. I also enjoy karaoke and I'm actually pretty good at it.
5. Reading up on Politics: As this is a topic I prefer to avoid to maintain the peace on here, I'll just leave this at this is the one topic my father and I are able to use to help us get along better as we see eye-to-eye on the issues.
6. Discussing history: this is another issue my father and I use to help us get along better. My father has tons upon tons of history books and always has something interesting to tell me.
7. Researching business structure: I enjoy looking at different industries that are fast paced like the automobile industry and figure out who is on the right track and who is on the wrong track.

I've got other ones, but they are escaping me right now.