Steven Spielberg's 1981 adventure film "Raiders of the Lost Ark" was a retro film by design. Set in 1936, "Raiders" is about a brave male adventurer, Dr. Henry "Indiana" Jones (Harrison Ford), who seeks to retrieve the legendary Ark of the Covenant (described in the Bible) before the then-active Nazis can seize it as their own. Spielberg was making a slicker, modern version of the 1930s adventure serials he remembered seeing in theaters as a boy, and "Raiders" includes car chases, fistfights, lairs of snakes, mystical spelunking, and a climax where a Nazi army is evaporated by the wrath of...