[wumpushunter]

I strongly recommend The Hacker's Diet (by the founder of Autodesk, John Walker).

http://www.fourmilab.ch/hackdiet/www/hackdiet.html

I found that when I got up to 208 lbs six or seven years ago, I now weigh 159. (I'm 6'3".)

[mmastrac]

Seconded. I went from 200+ to 178 about 10 years ago using that book. It really helps you understand how to think of your body as a system, and weight loss as an optimization problem.