# Links to Online Videos of Good-Quality Lectures by Mathematicians

I am not trying to do anything new here, but I would like to start an activity that has been going on at Math Overflow. Hopefully, people here at the Math StackExchange can also enjoy the good stuff.

If you know of any online videos of good-quality lectures by mathematicians, whether they are about some seminal topic, an introduction to some new exciting idea, a re-exploration of a well-known area, or simply about how they do mathematics (like Paul Halmos), please post a link here with a brief description of the contents of the video.

Hopefully, we can start a video bank here! Thank you very much for your contribution!

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could you provide the link to Math Overflow to this question? –  yiyi Dec 12 '12 at 5:11
@MaoYiyi I think he is refering to mathoverflow.net/questions/54430/… –  Hans Giebenrath Dec 15 '12 at 11:24

The audio isn't great but Serre's "Writing Mathematics Badly" is classic. It's a discussion of what is and what is not good mathematics notation, style, etc. It also has quite a bit of humor mixed in:

Part 1

Part 2

Part 3

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I’m giving you the inaugural check mark so that I can maintain my accept rate at $100 \%$. Just a formality. :) –  Haskell Curry Feb 1 '13 at 19:22

Let me contribute by posting the following links:

Part 1

Part 2

Part 3

Part 4

Part 5

Part 6

It is a talk by Paul Cohen about his work on the Continuum Hypothesis and his interactions with Kurt Gödel. This talk took place at the Gödel Centennial conference in Vienna in 2006.

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Nice. Both of our videos are excellent content, but shoddy camerawork--go figure. –  Alex Youcis Dec 12 '12 at 4:51
Haha... People tremble in the presence of greatness. That explains the shaking. –  Haskell Curry Dec 12 '12 at 4:53
That's also the reason why the title says 'videos of good-quality lectures' and not 'good-quality videos of lectures'. –  Haskell Curry Dec 12 '12 at 5:00