I learned about Ted.com thanks to a guest on RadioLab a few weeks ago. Then last night, Fran and I dug a little deeper into one of the widgets on our new TV. Turns out Ted.com is one of the offered channels (Fran was probably sad she gave me the remote).
Here's a talk we watched last night. You've probably heard about this study and some of it's findings. Yet, it's still interesting.