For the sport of running, there are two interesting books: The Zen of Running and The Complete Runner (just two I've seen around the house from my dad). The first seems to talk about the essence of running, and the latter has chapters on the philosophy, the physiology, etc.
Are there similar books about biking, specifically road biking? I would like something that talks about the inner meaning of riding (self-dependence? economy?) and maybe some information about nutrition and conditioning.
One book that looks interesting is "Metal Cowboy: Tales from the Road Less Pedaled", by Joe Kermaskie; this book is stories (fiction and non-) from his apparently solo travel across America and other lands...
For maintenance, there is "Zinn and the Art of Road Bike Maintenance", by Lennard Zinn, obviously taking the title from "Zen and the Art of Motorcycle Maintenance" by Robert M. Pirsig (awesome book). I don't know how good either of these books are...
And of course there is Lance's, but I'd guess that it "isn't about the bike".

I've read none of the bike books I've mentioned, so let me know if you have and what you think, and if you know of others.