I just finished Tim Harford's new book, "The Logic Of Life: The Rational Economics Of An Irrational World" (he's the guy who wrote "The Undercover Economist"). It's basically a look at the hidden logic behind seemingly irrational decisions that people make in everyday life. The guy's an economist, but not of the stockmarket variety. It's quite an engrossing book - and to get you hooked, he starts off with a chapter about blow jobs. What else could you ask for?