Don’t Know Much About History by Kenneth C. Davis: A friendly question-and-answer format with entertaining answers about American history from Columbus to Clinton. The post-Watergate coverage is pretty slim, but at that point it could probably be assumed that most readers remembered those years clearly. (There is an updated version, but my copy was printed in 1995.) I learned quite a bit about those bits we skipped in school, like the Vietnam and Korean Wars. Though it could not replace a traditional history course, since there is an assumption that you know enough basic information to ask the questions being answered, it is an excellent refresher for those who have long since forgotten the names and dates they learned in school. Like most good popular history books, it brings out the human side of history, turning the names into people and the dates into actions with consequences.
Also posted on BookCrossing.