The famous line "Leave the gun. Take the cannoli" was improvised by actor Richard Castellano

Marlon Brando was awarded the Oscar for Best Actor for his performance in the Godfather but turned it down to protest Hollywood's treatment of Native Americans

George Lucas, who conceived of the name Darth Vader, described it as a variant of the phrase "Dark Father"

Han Solo's famous line "I know" in response to Leia's "I love you" was an ad lib by Harrison Form. The line in the script was "I love you, too."

According to Mark Hamill, 20th Century Fox executives were concerned that Chewbacca was naked and suggested that he wear pants