If you've been around the running scene for even a short amount of time, you've almost certainly seen someone wearing weird looking shoes called Vibram Five Fingers; they're designed to give your feet a little protection from sharp objects while otherwise enjoying the benefits of running without shoes.
Christopher McDougall is one of the main reasons that barefoot running has entered the mainstream. His book, Born to Run, discusses his contact with the Tarahumara Indians of Northern Mexico, a group of super-healthy, long-running, practically barefoot tribespeople hidden in the hills and jungles. Chris's talk at TEDxPennQuarter (TED is an awesome speaker series, I strongly recommend checking out some of their other speakers after watching Chris!) focuses on what he has discovered about running, his experience with the Tarahumara, and why he believes that human beings are born to run.
What did you think? Are we born to run? Is barefoot running the answer? Let me know!