‘Hail, Caesar!’ isn’t a major Coen movie, but it’s super entertaining

There is much to savor in “Hail, Caesar!” Joel and Ethan Coen’s goofily entertaining poison-pen letter to Hollywood of the early 1950s. The madness revolves around Eddie Mannix (a fine Josh Brolin), a straight-arrow executive at an MGM-like studio who spends one very long day and night fixing personnel problems that threaten to slow down...