I recently finished Rocket Men by Robert Kurson, about Apollo 8. That was great. But the ultimate book on Apollo for me is still Chaikin's 'Man on the Moon' which details all of the Apollo missions from interviews with the astronauts not too long after, as well as some of the pre-Apollo stuff (Gemini and Mercury).

Tom Wolfe's The Right Stuff is also great to understand the test pilots from which most of the astronauts were picked.