Feynman Messenger Lectures (via Microsoft)

robphy

"Project Tuva"
has a transcript, timeline, and other interesting features. (Silverlight required.)

I learned this from Slashdot:
"Bill Gates Puts Classic Feynman Lectures Online"

Sankaku

Some for those who don't want Silverlight:

Feynman: Quantum Electrodynamics
http://www.youtube.com/view_play_lis...h_query=Feynma n+part

Richard Feynman - The Law of Gravitation
http://www.youtube.com/view_play_lis...h_query=Feynma n+Lectures+laws+gravitation

Character of Physical Law - Richard Feynman
http://www.youtube.com/view_play_lis...h_query=Feynma n+part+lecture

Richard Feynman - The Relation of Mathematics & Physics
http://www.youtube.com/view_play_lis...h_query=Feynma n+Lectures++Relation++physics

Richard Feynman - The Douglas Robb Memorial Lectures
http://vega.org.uk/video/subseries/8