Amallison - I like Bob Greene's Total Body Makeover, there's a section on emotional type reasons why we might be overweight, a section of exercises, and a section with a synopsis of different diet plans to compare. It's not the most current but I find it helpful, I got it out of the library then decided to buy it.
I also liked Hungry:a memoir by Allen Zadoff, and recently read The Lighter side of Large, which was a lighter but interesting read. They were both ebooks.
There's a thread in General Chatter called What are you reading, you might find some more suggestions there.
Best of luck
