This is a wonderful resource. For physicists, spend a couple of hours watching Freeman Dyson or Murray Gell-Mann telling you about their life to date. Mathematicians can see Benoit Mandelbrot and biologists, Francis Crick.
[perservere if there are streaming problems, its worth it.]
The recent demise of Crick highlights what an invaluable resource this could be in years to come. Documenting the histories of some of our greatest thinkers and making them available on the web makes this a very inspiring diversion on the web.