Here is a fascinating site to find out about the Golden Ratio and the human face.
http://www.intmath.com/numbers/math-of-beauty.php
Don’t miss the flash application where you can fit a mask to some famous faces to see if their facial proportions match the golden ratio.
You will find the Golden Ratio appears not just in the human body, but in architechture, design nature, cosmology, photo composition, art and much more.