http://www.ted.com/index.php/talks
TED stands for Technology, Entertainment, Design. It began in 1984 as a conference. The annual conference now brings together the world's most fascinating thinkers and doers, who are challenged to give the talk of their lives (in 18 minutes). Speakers have included: President Bill Clinton; Nobel Laureates James D. Watson, Murray Gell-Mann, and Al Gore; Wikipedia co-founder Jimmy Wales; author Elizabeth Gilbert; and Google co-founders Sergey Brin and Larry Page. Approximately 370 TED talks are currently provided for free viewing online. As of January 2009, talks had been viewed over 90 million times by more than 15 million people. Users are able to search the TED site for specific presenter names. These videos are released under a Creative Commons license, so they can be freely shared and reposted. The video podcast talks are also available by RSS subscription.