I like all the "how to" books... tying, tactics, stream guides, etc.
The one fiction book I have not seen mentioned yet is The Fly Fishingest Gentleman"
Now I absolutly HATE reading. Counting that book, I think I can count all the books I have completed since birth on 1 hand (counting the cat in the hat). I could not put that book down when I got it as a gift. (I will probably read it again this winter) I have since read, Lee Wulf, the Compleat, which is also an excellent read. That guy was amazing!
Just wanted to put my 2 cents in... with inflation, it's still not that much.
(ooo look what ebay came up with)
http://cgi.ebay.com/The-Fly-Fishingest-Gentlemen-Limited-signed_W0QQitemZ320329519363QQcmdZViewItemQQptZUS_Nonfiction_Book?hash=item320329519363&_trksid=p3286.c0.m14&_trkparms=72%3A1205%7C66%3A2%7C65%3A12%7C39%3A1%7C240%3A1318%7C301%3A1%7C293%3A1%7C294%3A50
Cheap one, I recomend you try it!
http://product.half.ebay.com/The-Fly-Fishingest-Gentlemen_W0QQprZ1322645QQtgZinfo