Nassim Taleb speaks at Princeton University on April 10, 2012. The video was just uploaded several days ago. At the time, Taleb was uncertain about the title of his now released, Antifragile: Things That Gain from Disorder. The speech lasts slightly over one hour (66 minutes total). Taleb is a bit arrogant, but has some great insights, ideas etc. in my opinion. The video is embedded below: