Thinking Fast and Slow is also a serious book. There have been some hits on how Kahneman wrote up priming, but few dispute he and Tversky have a big body of brilliant and rigorous research. They don't deserve to be on the same list as Freud, Sacks or (probably) Ariely. While those guys are interesting, all are rather less scientific. Cialdini I'm not sure about. His "Focus Theory of Normative Conduct" has been very influential but perhaps it is a one-trick pony?