I have seen a lot of calorie counter books. Usually they give you a good idea of what could be in foods you are eating, but they are never too accurate or familiar with all brands.
The CalorieKing Calorie, Fat & Carbohydrate Counter ($8.00, 2007 Edition) is fab! I love it and it is becoming my calorie bible. This small book has 11,000 food listings, including those from 200 fast food restaurants and contains international foods, carnival foods and fair foods. Ever wonder how many calories are in a churro? I did and now I know that one 8 inch churro packs a whopping 325 calories. Yikes!
It's fun to look through because you'll catch yourself flipping through pages and be amazed at the high calories in foods that you may (or may not) eat on a regular basis. Once you get this book you'll rely on it for everything. I keep mine in my bag so I have it readily available when I am out and about. Buy it directly from CalorieKing.com.
For a sneak peek at some of the pages, read more