The usual suspects are here and Mental Floss has created a list of the most unethical psychological studies ever done. The list also has several clips that can be found on YouTube. There are overviews of the Zimbardo prison study, Milgram, Little Albert, Darley and Latane's research on bystander effect, Harlow and his monkeys, and more. Could be a great handout or discussion starter about the ethics of research for students.
posted by Chuck Schallhorn