Uniview Worldwide have released a new DVD, "Zimbardo Speaks", which shows Philip Zimbardo delivering an enthralling presentation on what he calls "The Lucifer Effect". Using the analogy of Lucifer, God's favourite angel - who then turns bad, Zimbardo explores what makes good humans commit evil deeds. It is one of the most informative educational videos I have seen and one of my students said it is the best thing he has seen in Psychology ever.