Stan Wagon's book about the B-T paradox is absolutely superb, but for mathematicians only. I've heard good things about Wapner's "The pea and the sun", intended for a lay audience -- e.g., the reviews at http://www.maa.org/reviews/PeaSun.html and http://www.ams.org/notices/200609/rev-komjath.pdf -- but I haven't read it myself.

(Speaking of Stan Wagon and beautiful mathematical exposition, his drably-titled paper "Fourteen proofs of a result about tiling a rectangle" is lovely and quite accessible. You can find it on the web with a bit of googling; I don't know whether any copy you can find in this way is legal.)