Considering that Apocalypse Now is such a classic, it's interesting to see how little faith Francis Ford Coppola had in himself while making the film. He was so stressed out about the film that he was even saying that he wanted to kill himself! It's crazy how much stuff went down during the making of Apocalypse Now. They used helicopters from the Filipino military, and they would just take off with them in the middle of shooting because a civil war was going on. Poor Martin Sheen had a heart attack in the middle of shooting and Coppola had to deal with Dennis Hooper being all stoned and not knowing his lines. He was so sure that this movie was going to turn out awful, but it is now considered to be one of the best films ever made.