Lots of interesting books here. The one listed by JCC that I would highly recommend to everyone here is "The Sociopath next door". If you are not a Sociopath or a Psychopath, it is extremely hard to understand the way they think. I guarantee you will recognize people you know and have worked with after reading this book. As to fiction, anything by John Sandford is good, the Jack Ryan books that Clancy started and have been well carried on by some other authors, and the Walt Longmire novels make nice, quick "airplane" reads.