Rock-a-Bye Baby feels like a reimagining of Preston Sturges' The Miracle of Morgan’s Creek, offering uncomplicated enjoyment for those who appreciate Jerry Lewis’ style of humor. Lewis portrays Clayton Poole, a man from a small town whose former sweetheart, Carla Naples (Marilyn Maxwell), has become a prominent film star. Discovering she is expecting, and concerned about the impact on her career, she convinces Clayto…