Another Pickover triumph!  In one of the most original mathematical journeys ever written, Cliff Pickover covers topics from Ramanujan and phi to Göbel and fractals.  The book is set up in such a way that one can pick any starting place one would like, on any page.  Astounding!  I didn't think I would like the format when I first started, but by the end I was loving it.  If you love mathematics, you MUST have this book.  If you want your high school students (or maybe even some junior high school studnets) to become interested in mathematics, you must get them this book.