Great question. It's tough for me to single out just one favorite, though this one has had a large impact on me. It's from Dan Buettner on his study of Blue Zon

Great question. It's tough for me to single out just one favorite, though this one has had a large impact on me. It's from Dan Buettner on his study of Blue Zones and why inhabitants regularly live long lives: http://www.ted.com/talks/dan_buettner_how_to_live_to_be_100.html http://www.ted.com/talks/dan_buettner_how_to_live_to_be_100.... This talk from Robert Full also had an impact, because it reminded me to look at unrelated fields for inspiration & solutions, like as the field of biology: http://www.ted.com/talks/robert_full_learning_from_the_gecko_s_tail.html http://www.ted.com/talks/robert_full_learning_from_the_gecko... On a side note, an exercise I've had fun doing with friends lately is to ask them who among our own social circles we would like to see speak, if we held our own TED talk. And what topics we would like to speak about ourselves. It has spurned a lot of interesting discussions amongst ourselves.