Watch the first 2 and a half minutes of McDougall's talk, and tell me you're not hooked.
My personal favorite quote (and it was difficult to pick just one, because there were several gems):
We think Usain Bolt is fast?
Usain Bolt can get his ass kicked by a squirrel.
Even if you are not sold on barefoot running (and I'm not), the video is fun to watch.
TED is a nonprofit dedicated to "ideas worth spreading" (for free). TED serves as (in their words) "a clearinghouse that offers free knowledge and inspiration from the world's most inspired thinkers, and also a community of curious souls to engage with ideas and each other." My take on it is that TED videos truly are amazing, thought-provoking, and inspirational, and cover such a wide variety of topics that there is something to catch the eye of almost anyone. I've used clips to improve my own knowledge, as a resource in my classroom, and for personal inspiration.
For the original McDougall video, please see: http://www.ted.com/talks/lang/eng/christopher_mcdougall_are_we_born_to_run.html