After scoring box-office bullseyes with Jaws (1975) and Close Encounters of the Third Kind (1977), Steven Spielberg blotted his Hollywood wunderkind copybook with 1941 (1979). A “comedy spectacular” set in the wake of the Pearl Harbor bombing (yes, really), 1941 cost nearly twice as much as Spielberg’s previous outing yet took less than a third of its box office. Chastised, the director teamed up with George Lucas on a project inspired by the serial cheapies of the 1930s and 40s. The result was the moderately priced Raiders of the Lost Ark, which promptly became the highest-grossing film of 1981, and...