Rob Sinclair, Director of the Accessibility Technology Group, is a great guy that I get to work with a lot. He has a ton of passion for end users, and really strives to make computers usable by all people, regardless of their abilities or skills.
It was pretty neat then to see him featured in the January 2007 issue of IEEE Spectrum where he got to speak about what motivates him. It's quite a good story. You should check it out...