Building Green by Clarke Snell and Tim Callahan-The Best book on Green Building I've found.  Great pictures and detailed diagrams. Easy to follow and understand for the novice or Pro.

Well written and nicely laid out. A joy to read and learn from.

Atlas Shrugged by Ayn Rand

1,500 Ways to Escape the Human Jungle by Vernon Howard

Think and Grow Rich by Napoleon Hill

An Inconvenient Truth by Al Gore

The Book of Joy by 

His Holiness the Dalai Lama, Archbishop Desmond TuTu with Douglas Abrams