These are books I love but would piss off most normal people. I don't necessarily agree with everything in them but I think people should read them to get a taste of something very different.
1. The Redneck Manifesto by Jim Goad
This book is the opposite of the Know The Ledge forum. It's a hilarious book on class and why rednecks exist but it would probably offend most people (look up the chapter names for a good example why). I love politically incorrect shit so this is one of my favs even though the author comes to the book with a heavy load of b/s.
2. The Satanic Bible- Anton LaVey
A great book that is the basis of the Church of Satan's theology. I recommended it no matter what your religion is for it's philosophical merits.
"The Satanic Bible was written by Anton Szandor LaVey in 1969. It is a collection of essays, observations and basic Satanic rituals, and outlines LaVey's Satanic ideology. The author claims the influence of Machiavelli, Friedrich Nietzsche, Ragnar Redbeard and Ayn Rand among others.
The book contains the core principles of Satanism and is considered the foundation of the philosophy and dogma that constitute Satanism. LaVeyan Satanists maintain that The Satanic Bible may not be subject to interpretation or revision, and that no rule or principle contradictory to what is written in The Satanic Bible may be considered applicable to Satanism."
I'll add more later...