In 1975, after his two Godfather epics, Francis Ford Coppola went to the Philippines to film Apocalypse Now. He scrapped much of the original script, a jingoistic narrative of U.S. Special Forces winning an unwinnable war. Harvey Keitel, originally cast in the lead role, was fired and replaced by Martin Sheen, who had a heart attack. An overweight Marlon Brando, paid a huge salary, did more philosophizing than acting. It rained almost...