Douglas Hofstadter's Gödel, Escher, Bach: An Eternal Golden Braid has been recorded as a series of video lectures for MIT's Open Courseware project.
posted by loquacious on May 30, 2009 - 74 comments

The Lecture System in Teaching Science "Meanwhile, back at the classroom, the lecture is drawing to a close. Just as the bell rings, the lecturer, if he's a really smooth operator, comes to the end of a sentence, a paragraph, a nice neat unit. He lays down his last piece of chalk — he knows exactly how many pieces the lecture will take — picks up his precious lecture notes, and goes out. The students, tired but happy, rise up and follow after him. Their heads are empty, but their notebooks are full. Their necks are a little tired; it's been like a sort of vertical tennis match: board, notebook, board, notebook. But other than that, everything is all right. Any student will tell you, "I never had any trouble with the course until the first examination."" [via]
posted by dhruva on Feb 6, 2009 - 63 comments

Sal Khan likes explaining things, and he's really good at it. Here he is on CNN giving an excellent explanation of the financial crisis. And here's a great explanation of Newton's Law of Gravitation. His YouTube channel has over 700 lectures and you leave understanding everything he talks about no matter the subject.
posted by y10k on Jan 31, 2009 - 21 comments

You and Your Research was a talk given by Richard Hamming in 1986. Read it if you have an interest in doing first-class work.
posted by parudox on Jan 4, 2009 - 24 comments

iBioSeminars is a new project from the American Society for Cell Biology to release freely available lectures from leading scientists on the web. It features talks on such diverse areas as stem cells, malaria, HIV, and biofuel production.
posted by pombe on Oct 30, 2008 - 4 comments

Swinging from pendulums and facing down wrecking balls, MIT professor Walter Lewin shows students the zany beauty of science.
posted by goodnewsfortheinsane on Mar 14, 2008 - 10 comments

Physics for Future Presidents is a class taught at UC Berkeley by Physics professor Richard Muller. It's a class specifically for non-physics majors and teaches the real world results of the sometimes impenetrable math involved in university physics. After every lecture, you should come away with the feeling that what was just covered is important for every world leader to know. I just sat through the entire hour and 13 minute nukes lecture and was riveted.
posted by quite unimportant on Nov 7, 2006 - 26 comments

Science Live site I found this because of the live coverage of the Festival of Science 2006 from Norwich, but found lots of other great links! Great for kids, but good for anyone curious about science. "What if you could watch any popular science lecture you wanted to? What if you could participate in any popular science event? What if you could find out what scientists themselves have to say about the issues that are important in society today? ScienceLive is an initiative that seeks to bring some of the best popular science events (discussions, lectures, interviews) directly to your home, so that you can watch these events whenever and from whereever you can.
posted by k8t on Sep 6, 2006 - 3 comments

The Royal Society has an excellent video library of lectures given there over the past few years. For example Jared Diamond with Collapse: how societies choose to fail or survive. Martin Nowak with Why we cooperate, or try Sir David Attenborough Perception, deception and reality.
posted by econous on Sep 1, 2006 - 2 comments

Proofs and Pictures: The Role of Visualization in Mathematical and Scientific Reasoning [video] "The picture is a telescope for looking into Plato's heaven." -- James Brown [cached]
posted by Chuckles on Aug 20, 2006 - 27 comments