SWC Ag said:
The scene in The Godfather when Michael marries Apollonia in Sicily and subsequently consummates his marriage....Pacino was 31 when they shot that scene. The actress playing Apollonia was 16.
Also, the famous horse head in the sheets scene....that was a real horsehead that Coppola acquired from a dog food company.
So many good ones on this movie.
The cat Marlon Brando had in the beginning of the movie was a stray cat. He picked it up and just went with it.
Also... when Brando was carried up the flight of stairs in the stretcher after being released from the hospital, he added 100 pounds of weight under the blanket to mess with the actors carrying him.