Martin Scorsese
Taxi Driver is a world-renowned film about a Vietnam War veteran working as a taxi driver in the Big Apple. Scorsese gave himself a pretty big part in this movie, playing a forlorn man getting dropped off at his apartment where his wife is waiting. He then describes his plans to kill the wife. Pretty dark for one of cinema's most well-known names. Taxi Driver is one of his best-known films, though there's quite a long list of other favorites.