In it he tries to clear up many miss understandings of his book. He uses Game theory, animal behavior, human 1st WW behavior to further explain himself. It is a very rare video, I though some might like to see it. I remember it from that time. I particularly liked the game Tit for Tat in the game theory section.
Selfishness is not the best mental attitude for survival and nature is not totally selfish in most cases it is cooperative. It is built into evolution? Its a good documentary, perhaps he should release a modern version in answer to the selfish agendas of our modern capitalist world.
Here's the link it will take you a secondary site called Nature Documentaries.org after a short transfer time.