One of the greatest gangster movies ever made, which gave The Godfather a run for its money, is whacking the competition on free streaming. Francis Ford Coppola's The Godfather trilogy (maybe, excluding the third film) is one of the greatest cinematic gangster sagas of all time. But 18 years after Marlon Brando played the Don of the Corleone crime family, Martin Scorsese delivered his own crime thriller, which became an instant classic. After modernizing the gangster genre, Scorsese's masterpiece is now streaming for free.