After looking all around the internet at many different sites listing the accomplishments and aspirations of those making a difference in this world, I settled on Derek Lomas. From his PopTech presentation to others at many different conventions and meetings, he's been a major proponent of bringing education to those less fortunate through ultra-cheap personal computers and laptops. Being a computer geek myself, I jumped right into his material and vision, and ate it all up. I'm a firm believer that teaching should be done through intrinsic motivation, and the the reward system a video game offers (most of the time) is simply that.
I'm following my hero on Twitter @ http://twitter.com/cognotron
as well as a blog he frequents: http://www.hastac.org/blogs/derek-lomas