The one by Philip Zimbardo: http://www.ted.com/index.php/talks/philip_zimbardo_on_the_psychology_of_evil.html http://www.ted.com/index.php/talks/philip_zimbardo

The one by Philip Zimbardo: http://www.ted.com/index.php/talks/philip_zimbardo_on_the_psychology_of_evil.html http://www.ted.com/index.php/talks/philip_zimbardo_on_the_ps... He talks about good and evil, about his famous Stanford prison experiment, about Abu Ghraib, about heroes and villains. Very emotional, very expiring and thought-provoking.