A really different approach to teaching that brings very powerful results. I recommend to watch this somewhere private, you'll discover why.
Part 2: http://www.youtube.com/watch?v=Oc7S8HAfDzk&feature=related
Part 3: http://www.youtube.com/watch?v=jd7YWx7idfE&feature=related
Part 4: http://www.youtube.com/watch?v=OEW65OKRiAk&feature=related
Part 5: http://www.youtube.com/watch?v=kJCRa2FKdsY&feature=related