Freakonomics.
Last year I wrote about a NYT article on young renegade economist Steven Levitt. More recently, there was a popular article about the positive economics of the honor system (in context of a guy who sells bagels and leaves out a cash basket).
Now (as reported by jkottke) he has a book out (with his collaborator from the Times, Stephen Dubner) entitled Freakonomics: A Rogue Economist Explores The Hidden Side of Everything. It sounds to be game-theory-heavy, which seems a natural take on things: “First, incentives are paramount. If you understand someone’s incentives, you can do a pretty good job of predicting their behavior.” “[A] slight tweak [in incentives] can produce drastic and unforseen results.” (De rigueur, there is a book blog.)