Cialdini's Influence: Science and Practice is amazing. It is almost a perfect mix (at least, in my opinion) between rigorous (citing studies) and accessible (using anecdotes, etc).<p><a href="http://www.amazon.com/Influence-Practice-Robert-B-Cialdini/dp/0205609996/ref=sr_1_3?ie=UTF8&#38;s=books&#38;qid=1263946707&#38;sr=8-3" rel="nofollow">http://www.amazon.com/Influence-Practice-Robert-B-Cialdini/d...</a><p>Unfortunately, most of the best information I have received for psychology came from the two classes I took (Social Psych, and Behavior in Organizations). I learned a tremendous amount, but very little (if anything) from the other books.