What is the name of the book that exposes all the Disney secrets hidden in the movies.

I believe this is the book you are talking about. It is called "Mouse Under Glass". It lists a Disney movie, discusses it’s history, and then points out bloopers in the movie. Sometimes it points out hidden things in the movies too, that were sometimes under scrutiny from the media. Examples are the word "Sex" appearing in the Lion King, and a scene from Aladdin where the title character supposedly says "Good teenagers take off your clothes."

http://www.amazon.com/Mouse-Under-Glass-Secrets-Animation/dp/0964060515/ref=sr_1_1?ie=UTF8&s=books&qid=1255666149&sr=8-1

I have this book, and it sounds like what you’re looking for. It’s the only one in my Disney book collection that talks about movie secrets at all. There are quite a few books that talk about park secrets however. If that is what you’re looking for, try this one. It’s the most concise, newest, and most accurate park secret book.

http://www.amazon.com/Hidden-Magic-Walt-Disney-World/dp/1605500631/ref=sr_1_1?ie=UTF8&s=books&qid=1255666142&sr=8-1