Why We Get Fat and What to do About It by Gary Taubes (nonfiction)

A truly readable version of Good Calories, Bad Calories, this book takes down the "calories in/calories out" myth scientifically.  It also follows the extensive history of the low-carb diet, and explains how and why we've veered away from what works.

I think the book needs an update/caveat.  The crux of Taubes' argument is that insulin response controls fat storage, but he goes on to say that artificial sweeteners are OK if a dieter needs something sweet.  Recently it has been shown that artificial sweeteners precipitate an insulin response.

The Hunger Fix by Pam Peeke, MD (nonfiction)

Despite malapropisms, repetition and over-capitalization, some valuable nuggets.  I have suffered from binge eating problems, and although I will not follow the program to the letter, several aspects spoke to me, especially advice on how to re-train your brain.  I have implemented them in my daily life.

Two Whole Cakes by Lesley Kinzel (nonfiction)

This short book about fat acceptance speaks against dieting and self-hatred, both of which can be much worse for your health than being fat.  I found it powerful and empowering.  The author is particularly good at making you feel her pain.  You also feel her joyous breakthrough after great resistance to the culture of fat self-hatred.