For those of you who have read Freakonomics, it's like the Freakonomics of parenting. It takes a look at some of the popular parenting styles of today and then compares them to scientific research that has been done specifically regarding those techniques.
I found it fascinating! It talks about everything from the problems of excess praise to the importance of adequate sleep, from sibling rivalry to self control. I have been constantly talking about this book to almost anyone who would listen. And to several who didn't listen. It's definitely a book that really makes you think about your approach to parenting. It has changed the way I approach some things and I can see a difference. But like all parenting strategies, I won't really know where I messed up for another twenty years.