I love ted.com, and I send friends links to talks all the time, so I figured I would list some of my favorites below.
Jonathan Harris - innovative story-telling with the web
Stefan Sagmeister - on how design can make you happy
Helen Fisher - on the science of love
Mihaly Csikszentmihalyi - on creativity, fulfillment and flow
Eve Ensler - on happines in body and soul
Bill Clinton - on rebuilding Rwanda
John Doer - Silicon Valley VC talking about greentech, powerful
Chris Abani - on stories of shared humanity