One of the most interesting and entertaining IT presentations I have ever watched.
It's mostly about Xerox PARC and the American pioneers of modern computing in general.
This talk is a mindblowing series of lessons on the history of our field and on what great technical management really is. It fills in some crucial historical details, like the relationship between ARPA and Xerox PARC. But the most interesting thing is the values that it conveys—basically, the technical values (and people) that gave us both the internet and personal computing. Considering the staggering importance of what was produced and how this stuff is not at all common practice, any window into it deserves attention.