It's funny to think how many of these are considered unethical now (minus Genovese) but where would the field be if they were deemed unethical at the time?
7 Great Ideas for Psychology Experiments
Top 10 Unethical Psychology Experiments
10 Most Brilliant Social Psychology Experiments
Some of these social psychology experiments offer surprising insights into how and why people do the things they do.
7 Great Ideas for Psychology Experiments: Learning and Color Experiment
Saw this and thought it was pretty cool.
Burrhus Frederic "B.F." Skinner poster for psychology. Compiled by Jeff Mortensen
Social Psychology Experiments - Explaining Human Nature
Top Ten Psychological Experiments That Went Horribly Wrong