TED Talks just announced a complete reorganization of their site, and it’s far more accessible than it had been previously.
There are lots of good things about the redesign. However, the part I like best is the organization of the TEDx talks. Those are independently-organized forums around the world, and there are zillions of talks that occur at them. They are now organized by topic (for example, here are all the ones related to education). Having them searchable this way will be very helpful.
I’m adding this info to The Best Teacher Resources For “TED Talks” (& Similar Presentations).