When the time came to shoot Michael's wedding to Apollonia Vitelli (Simonetta Stefanelli) in Sicily, Coppola was still blowing gaskets over Pacino's unique, often circuitous approach to his performance. But the pair had developed a rapport that allowed Pacino to help them both shrug off Coppola's worries.

In his new memoir, "Sonny Boy," Al Pacino wrote that he and Diane Keaton were certain that "The Godfather" would end their burgeoning careers.

The Godfather trilogy may consist of three movies, but Francis Ford Coppola doesnt consider the series to be a true trilogy for one simple reason.