My first exposure to psychology was reading one of Phil Zimbardo's books after seeing his series on a PBS station. You might remember him from the Stanford Prison Experiment.
The above is his new book that I plan on getting.
He also spoke at MIT and the webcast is here:
http://www.law.harvard.edu/news/2007/03/30_zimbardo.php
To view a webcast of the event, click here.
Here is another related site: www.lucifereffect.org
The information is helpful in understanding cults and high control groups.
Blondie