Big TED fan here. When I had my back problems and basically stopped sleeping for a year, I watched endless TED Talks to take my mind off the pain. Hundreds and hundreds of them. I even watched topics I had no interest in, such as child-rearing and the future of hemp clothing. They were all worthwhile, and most were truly inspiring.
Unfortunately, Bob's link didn't get me anywhere. Never loaded. Maybe the server's overloaded.
So if you can't get to that one right away, you might enjoy
this one for the time being.