The Microsoft project seems to only be the "Messenger Lectures" that Feynman gave at Cornell in 1964, not the more well-known Caltech lectures. They're still a

The Microsoft project seems to only be the "Messenger Lectures" that Feynman gave at Cornell in 1964, not the more well-known Caltech lectures. They're still a fantastic watch and kudos to billg for putting up the money to obtain the rights. There are a ton of Feynman lectures on this YouTube channel: http://www.youtube.com/user/FeynmanVideoLectures/videos http://www.youtube.com/user/FeynmanVideoLectures/videos although I'm unable to tell if they are authorized / legitimate. They've been up for 3 years, though, so presumably they would have been DMCA'd by now if they weren't.