Tech Talks From Google Video

Like a lot of companies, Google has speakers (internal and external) give talks - unlike a lot of companies, Google has put them up on Google Video:

Google TechTalks are designed to disseminate a wide spectrum of views on topics ranging from Current Affairs, Science, Engineering, Humanities, Business, Law, Entertainment, Medicine, and the Arts. ... Authors@Google is a speaker series where thought-provoking, Zeitgeist-making, trend-setting authors come to the Googleplex to read from their works and share their thoughts with us. The following authors have agreed to release their talks to the world on Google Video.

I don't think "Zeitgeist-making" is a real term but several of the talks do look pretty interesting.