There's also a
Wikipedia article.
To me it's questionable whether the Stanford experiment shows the things that some people claim it shows, e.g. that the capacity to mistreat people under our power is in all of us. Sadistic tendencies were only displayed by one third of the guards in the Stanford experiment.
Since none of the guards really stood up to the sadism, however, a better conclusion is that people are willing to follow evil orders if issued by someone perceived as an authority figure. This is also the conclusion of the possibly even more disturbing
Milgram Experiment. They sure did some unethical experiments back in the day.
On the same subject, less disturbing and more just amusing are the
Asch Conformity Experiments.