I have posted about my love of videoblogger Jay Smoothbefore. He's probably best known on the Internets for his famous video on how to tell people they sound racist, which I expect most of you have seen before (but if not you should go watch it right now). Recently, he gave a follow-up TED talk at Hampshire College, and it is very excellent.
There's also a transcript on his site, here. But if you are video-enabled, watching the whole thing is very worth your time.