Anyone having a look at this Economics Anti-Textbook blog will want to have a look at Economics for the Rest of Us: Debunking the Science that Makes Life Dismal by Moshe Adler, an elegantly-written and accessible book (as well as being very nicely produced). It can be read by someone even without introductory economics, but can be read with profit by anyone.
http://books.google.ca/books. You'll see that it is divided into two parts. The first examines the concept of economic efficiency that dominates the textbooks in a way that I found very original and insightful. The second half of the book is a critical examination of theories about the most important prices in the economy (wages) which get the back-of-the-bus treatment in the theory textbooks, which spend much more time on output prices.
I'd like to have the time to write a proper review of this book, but I'm a bit swamped right now. In any case, you should just get yourself a copy: the hardcover is a mere $22 on Amazon.ca. (The paperback edition will be out next June.)