It was on this date (December 20th) back in 1946 that “It’s a Wonderful Life,” premiered in New York. Directed by Frank Capra, the film stars Jimmy Stewart and Donna Reed.

FUN FACT: The rock that broke the window of the Granville house was all real.

Though Director Frank Capra had a stuntman at the ready in order to shoot out the window of the Granville House in a scene that required Donna Reed to throw a rock through it, it was all a waste of money. “Mom threw the rock herself that broke the window in the Granville House,” Owen says. “On the first try.” – MentalFloss.com

MentalFloss details this and 24 more facts about ‘It’s A Wonderful Life.’  For all 25 facts about this holiday classic, click here.