TED - TO FAIL IS THE ONLY WAY TO SUCCESS: Regina Dugan: From mach-20 glider to humming bird drone - 25 Minutes long videos, I'd say, watch at least a few minutes.

From Gamers solving problems to Mach 20 - fastest flying machine to human made humming bird. It is one of the best TED videos ever! TED impresses the hell out of me! Really!