In 1942, Warner Brothers began production on a romantic wartime melodrama with all the workmanlike routine of any of the other dozens of programmers they churned out each year. No one involved had any clue that this particular assignment would become one of the most famous movies of all time, an Academy Award-winning classic that would transcend generations, Casablanca. There are myriad reasons for its longevity, from the universal emotions of the central love triangle, to the sadly all-too...