TED is an annual conference where speakers are given about 15 minutes to present something amazing they've done or know about. I've been to the last few TED conferences and I find them to be both awe-inspiring and humbling. Most of the talks area available for viewing at the TED site.
Here's a spreadsheet someone put together that lists every TED talk available for viewing. It includes a short summary of each talk. While browsing it, I found one talk I missed: Eames Demetrios presenting a history of the work of his grandparents, Charles and Ray Eames.