Four books, off and on:
1) "The Dictators" By Richard Overy. Really interesting book, detailing side by side the life of Hitler and Stalin, their leadership styles and their personalities. It's remarkable how crazy Hitler was. Stalin was utterly ruthless, but he was more or less sane (except for the paranoia which was actually understandable - plenty of people wanted to overthrow him). Hitler, on the other hand, was extremely odd. He refused to be photographed with glasses on his face. He would regularly descend into rage-filled rants for no real reason. He would often just stare at people in the face without cause and he wore clothes while in the shower, due to a pathological fear of being naked at any moment.
2) "We Can Build you" by Philip K. Dick. By far one of his weakest books. I love Philip K. Dick, but this book is just not very good, and it's starting to lose the plot.
3) "The Cambridge Companion to the Roman Republic", which is a collection of historical documents analysing Roman society. Some parts are extremely interesting, while other parts are incomprehensibly dull. Given that I paid over 80 bucks for this book, I feel it was a bad decision. Good books don't have horribly dull parts in the middle of them, and this book has horribly dull parts.
4) Michael Shermer's "The Science of Good and Evil". Not a bad book, but not Shermer's best effort either. Frankly, "Moral Minds" by Marc D. Hauser is a better book, and deals with same issues.