I just finished "Does this clutter make my butt look fat" by Peter Walsh. Light read for me but if you don't have a lot of knowledge about the psychology of weight loss it would provide a good background.
A few on my list:
Thinner than Thou
In Defense of Food
Hi.. I recently surfed on internet about different ways for weight loss. There I found a natural supplement called the nut of india. It is good and simple way for removing the excess weight of the body.