Continuing with the Freakonomics theme, I bought this book a while back because it had a positive blurb from S.D. Levitt! Everything you ever wanted to know about data-mining but were too afraid to ask. Not at all bad.
This might just be the first book I ever pre-order. The authors aren't afraid of controversy and it will be especially interesting to see whether their unorthodox chapter on global warming will cause a Lomborg-esque storm.