[Added 9 July 2012: The discussion on Hacker News prompted by this post by Colin Wright is well worth reading.]
Peter Norvig is Google's Director of Research. Here, finally, is a recording of Peter Norvig's February 2012 six minute TED talk about his and Sebastian Thrun's 2011 mass free online computer science course about artificial intelligence (in which I took part as a student and from which I wrote weekly reports throughout - to find them scroll down here). It is interesting in its own right. It also shows how much can be conveyed in only six minutes (though post-talk questions and discussion would have added a great deal).
Note Norvig's conclusion:
"....the most exciting part of it is the data that we're gathering. We're gathering thousands of interactions per student per class, billions of interactions altogether, and now we can start analyzing that, and when we learn from that, do experimentations, that's when the real revolution will come."
[Below the video I have pasted the transcript of the talk.]