I have read some of these experiments from years ago.
The listing in the link, is out of order, so NEXT-> is
necessary to see the "Prison Experiment". It impressed me.
Zimbardo ran a "Prison Experiment" using Stanford students
as subjects.
http://en.wikipedia.org/wiki/Stanford_prison_experimentI have not seen a whole lot of replications or variations
on these experiments. Maybe more were done and they were
not noteworthy. Maybe it is all to scary.
By word of mouth, I heard from an experimenter, that subsequent
humanitarian standards were in place to protect subjects,
but no details were forth-coming.