I was reading Dune, but I put that aside (still have about 150 pgs to go) for Hick Flicks: The Rise And Fall Of Redneck Cinema, by Scott Von Doviak. Excellent book about the films that played in the southern drive-ins, from moonshine movies to truckers to racing to bigfoot. It's not a movie guide, but covers key films from each genre.
I just finished that one and started The Death of WCW, by R.D. Reynolds and Bryan Alvarez. From the authors of Wrestlecrap: The Best of the Worst of Pro Wrestling, it covers the rise and fall of what was America's biggest wrestling federation. Supposedly very accurate (according to people who used to work there like Bobby Heenan and Scott Hudson).
I'm also nearly finished with The Essential Monster Of Frankenstein, Vol. 1, one of Marvel Comics B&W "Essential" collections. The first half is pretty good, with an adaption of the novel and a meeting with Dracula and featuring great art by John Buscema and Mike Ploog. The stories set in the modern age don't hold up as well. Veerrryyy '70s if you know what I mean.