I freelance as a web developer and have started my own non profit. In the last two semesters (roughly 8 months), we fed about 600 starving college students, with the capacity to feed 600 more. I'm also on the ground floor of a couple of different tech start ups, which could, in the next 10 years, be real game changers.
I've also been doing martial arts for the last 11 years. I teach it, along with some free self defense seminars on various campuses. It's a way for me to encourage and inspire others to be healthy and to have discipline and fun.