Bill Gates went on vacation with a friend and visited a university library where they discovered Richard Feynman’s Messenger lectures on the laws of nature. They thought that everyone should see the lectures. Twenty years later, Gates has bought the rights and put the lectures on the Internet. This is Project Tuva.
It’s worth watching the introductory video in which Bill Gates enthuses about what makes Feynman such a good lecturer. The video player requires Silverlight, and has various extras such as pictures, links and text notes relating to various points in the lectures.
Thanks to zapopaul on YouTube who left a comment pointing to the project. Either I have been asleep or this should have been publicised more.