Errol Morris must have needed a break from life’s misery after taking on capital punishment (Mr. Death: The Rise and Fall of Fred A. Leuchter, Jr.), the U.S. debacle in Vietnam (The Fog of War: Eleven Lessons From the Life of Robert S. MacNamara), and the torture at Abu Ghraib (Standard Operating Procedure). He certainly gets it with this side-splitting documentary about Joyce McKinney, a former beauty queen who was charged in 1977 with having kidnapped her Mormon boyfriend during his missionary training in England. The story became a tabloid sensation in the UK, revived briefly in 2008 when McKinney had her late, beloved dog Booger cloned by a South Korean scientist. Morris adds to the hilarity with his signature device of superimposing key words onscreen in giant type; the movie is a welcome reminder that he got his start immortalizing American oddballs in Gates of Heaven (1978) and Vernon, Florida (1981).