Hopefully this idea flies - I can't be the only person reading wrestling books!
I just finished reading Rey Mysterio's "Behind the Mask." It was a lot better than I figured it would be (by virtue of Rey's international experience), but it still wasn't a great book. I'm not complaining, he comes off like a pretty easy-going guy, and doesn't really have any serious axes to grind (other than Eric Bischoff's handling of him losing his mask in WCW). The "chapters" are super-short, so while Rey doesn't get in-depth about much, it reads like a series of impressions of whatever he's talking about.
Downside: there are things I wish that he'd have addressed over the course of the book (it came out in '09, so hearing about his take on the Benoit situation or the Mexicools would have been interesting).
Thumbs in the middle - it's a quick, easy read, but probably not going to give you a ton of information that you might not have already known.