Not sure if this has been posted before, but there were some interesting facts and some facts I would question.
[video=youtube;dgNUjY-lZac]http://www.youtube.com/watch?v=dgNUjY-lZac[/video]
[video=youtube;dgNUjY-lZac]http://www.youtube.com/watch?v=dgNUjY-lZac[/video]