George Mason's Bryan Caplan, guest blogging for the Economist's Free Exchange, explains the boom in "fun" economics books:
It’s Econ 101 – if you earn enormous profits selling a unique product, you won’t be unique for long. As soon the competition smells money in the air, they’ll be hard at work trying to catch the bandwagon. Case in point: Two years after Freakonomics proved that writing about economics in an engaging way could make you rich, the market for fun books about economics is filling up.Caplan has some more recomendations. Personally, I prefer The General Theory.