Goodreads had several must-read skeptical books, and they are pretty much exactly what you would expect - a bunch of stuff by Sagan, Dawkins, Shermer, etc. I used to refer to them quite often when picking out stuff at the library, although after a while it feels like you're reading the same book over and over again. I've found that most straight science books manage to get skeptical lessons incorporated anyway, with the added bonus of familiarizing you with how they play out in a specific discipline.
SGU Crew has a book coming out this year?