I think my two guiding principles are empathy and long-term thinking; and from those two naturally comes kindness, because it just frickin' makes sense.
I engage in conspicuous non-consumption. I try to understand the context and implications of just about everything. People are more fascinating to me than machines, but machines are more profitable to work on for the time being. I don't choose the profitability of work for its own sake, but for long-term security.
On the theme of long-term thinking (again), sustainability is (quixotically) a big deal to me (Ask me about the utility-scale photovoltaic industry!).
I bike a lot, and I spend a lot of time at climbing gyms. Sometimes I run, and feel awesome. When I lived in the city I went to a vaguely-goth swing dancing night each week, and since moving to Berkeley (as of July 2013), I want to get back into dancing. Actually I really want to learn ballet. I took a couple classes way back when, and loved the act of moving with such precision. I'd probably enjoy yoga if I wasn't so put off by the mysticism that tends to go with it. UPDATE: Just (Feb 2014) started a dance conditioning class at Kinetic Arts, and it's great. Nice shallow learning curve.
About body type: So I'm muscular, nimble, and chubby. I'm obviously really active, and try do something physically intense for the pure joy of it maybe every 2-3 days. I also self-medicate with fair-trade dark chocolate more or less continuously. It's a good life. :)