During the early scene where Captain Willard (Martin Sheen) is having an existential crisis in his hotel room, Sheen was genuinely drunk. Despite the protestation of the film crew, who could clearly see that the troubled Sheen was having a genuine breakdown, Coppola insisted they keep filming. It wasn’t until after Sheen had punched a mirror and attempted to attack the director that Coppola eventually cut.

Worth it? Maybe.