I usually decide whether or not to read books based on the New York Times book review. For "The Night Circus", the cover alone enticed me to read the book despite the nebulous review by Stacey D'Erasmo. I have to say that after reading this one, I concur completely with her interpretation of the text. I think someone else mentioned that it was a lot of people waiting around a circus for something notable to happen.
This is one tome, that I think is already in the works and will make a spectacular movie. As I flipped along, I was mostly intrigued as to how one might design and construct sets as per the descriptive. I'm not sure if I'd recommend this one. You may borrow my hardback copy if you wish.