Clint Eastwood has been a force of nature in the movie business for longer than I can remember. By the time I was cognizant of something called the movies, Inspector Harry Callahan was already, some three films on, getting long in the tooth. The largely anonymous gunslinger he played in Sergio Leone’s spaghetti westerns seemed like ancient history. And by the time he played either of those great roles, he had paid his journeyman dues, appearing to a greater or lesser extent in a string of undistinguished pictures with titles like Escapade in Japan, Ambush at Cimarron Pass and, of course, Francis in the Navy.