我只能说太棒了！有sattler关于描述逻辑的演讲，有Tim Berners Lee的访谈，有Machine Learning的课程，，，，，哈哈哈哈

http://videolectures.net/

"Videolectures.net is a new web service, still in beta, that provides “free video lectures from the world’s leading and prominent scientists”. The most common topics are drawn from computer science with an emphasis on Semantic Web and machine learning, although there is an obligatory lecture by Noam Chomsky.

The videos include lectures, tutorials, paper presentations and informal interviews. Most of the current ones are from recent conferences, including NIPS, ICML, ECML and ISWC as well as various workshops and summer schools

Users can leave comments and the system will recommend videos based on “visitors who watched this lecture also watched…”. I

While I doubt that Google will pay a billion dollars for this company, it looks like a great resource for CS researchers."

http://ebiquity.umbc.edu/blogger/2007/03/14/videolecturesnet-youtube-for-computer-science-researchers/