http://www.youtube.com/watch?v=n_rus6l66l8&feature=related
The link is a video about a famous psychology experiment from the 1970s that tested human behavior and pushed research ethics. One group of students take the role of prisoners while another group of peers act like prison guards. How they reacted to the newfound roles is worth watching.
It's YouTube, so there are six 8-minute clips that comprise the documentary. If you get bored, give it a go.
My drunk posts are better than yours.