It took me a long time to convince myself to read this book and a long time to finish it. But in the end it was totally worth it! Very informative and enlightening and Marion Nestle shares personal insights which add context.
Warning: you may never look at food and food marketing the same way again.
My full review is here: http://thoughtfuleating.blogspot.com/2012/06/book-review-what-to-eat-by-marion.html