10 Behind-The-Scenes Dramas That Failed To Derail Famous Movies

10. Everything That Could Go Wrong Does Go Wrong With  Apocalypse Now 

Apocalypse Now had such a troubled and eventful production that an entire documentary was made to explain exactly what went on (it's called Hearts Of Darkness: A Filmmaker's Apocalypse).

The issues involved are almost too numerous to list. Director Francis Ford Coppola fired leading man Harvey Keitel after just two weeks of filming, replacing him with Martin Sheen, who, at the time, was suffering from alcohol addiction.

As a result, Sheen would regularly show up to set drunk. The scene featuring his character wildly flailing around a hotel room and punching a mirror looked incredibly convincing, and that's because it was real; the actor was off his face and accidentally cut himself on the glass.

Another actor, Marlon Brando, would show up to set having not learnt his lines, forcing Coppola to shut down the movie temporarily so he could take Brando through the script.

Coppola also had to overcome other obstacles, like erratic weather, actors not getting along with each other, and Martin Sheen having a heart attack.

But in the end, none of this held the movie back whatsoever. Apocalypse Now is regarded as one of the finest war movies of all time, and was nominated for Best Picture at the Academy Awards - which is hardly a disastrous result.