I just wrote a review for Amazon of The Golden Ratio : The Story of PHI, the World's Most Astonishing Number by Mario Livio. I'm usually a fairly easy marker but this book bored me to tears. The guy writes a book on math and tries to keep as much math out the book as possible. Instead he talks about why the builders of the pyramids really didn't use phi. And then anyone who has even a marginal association with phi gets long, pointless biographies.
I think Livio completely missed his audience. People who are going to be interested in reading this book are not going to be afraid of a little math.
You can read the full review here: My Amazon Reviews