It seems like there is a myriad of books on cycling...and I imagine that some of you hard-cores have already weeded through some of them....so, what books would you recommend and why?

I meant this thread for cycling books of all kinds, but why stop there? *shrugs. I'm proposing some categories so this thread isn't a soup sandwich:

MECHANICS
DIET
RIDING
WHAT I READ WHEN I'M NOT RIDING...other than bikeforums.net