Brainz.org has compiled a list of what they believe to be the 10 most revealing experiments in psychology. In my opinion, the list appears to ignore many of the "classic" experiments from the history of psychology. Feel free to include your thoughts in the comments section below.
Perhaps, after studying the history of psychology, students could develop their own "Top Ten" list and compare it to the Brainz.com list. At the end of the year, after learning in detail about the many famous studies, students could again develop a "Top Ten" list and see how their opinions have changed since the beginning of the school year.
The Brainz.org list can be found at http://brainz.org/ten-most-revealing-psych-experiments/