Bill Gates left as Chief Software Architect about a year ago and since then he’s been devoting his time to his philanthropic work through the Gates Foundation, attempting to solve some of the world’s biggest problems; polio, malaria, poor education etc.
Aside from this, and as something of a personal project, he has been working on bringing to the fore a collection of videos that cover the lectures of Richard Feynman a noted physicist given at Cornell University in 1965. Feynman was noted for his ability to make complex topics accessible and approachable and the “Messenger Lectures” were a great example of this.
Gates first saw these videos twenty years ago and since then he has been working to track down copyright ownership to bring them into the public view where they could be enjoyed by the world. This effort has become known as Project Tuva and you can check out the videos on the Microsoft Research website here: http://research.microsoft.com/tuva