6. The Godfather (1972)
The Godfather is a cool anomaly in the fact that the same writer wrote both the original novel and the film. The novel was published in 1969 by Mario Puzo, who also co-wrote the 1972 adaption with the film director Francis Ford Coppola.
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Both versions follow Michael Corleone as the lead character in his journey from family exile to ruthless mafia boss. The movie is famous still for the incredible performances by Marlon Brando and Al Pacino.