D I D Y O U K N O W
In the Movie, It's a Wonderful Life, when the bridge scene was filmed, George is rather sweaty because it was in fact 90 degrees on the day of filming.
Another surprising fact occurs in Home Alone. Daniel Stern, the actor who played Marv, didn’t like spiders. He didn’t want to do the infamous tarantula scene, but agreed to the filming as long as it was completed in just one take. The scene was shot but Daniel Stern wasn’t allowed to scream in real life because it would have spooked the tarantula, so the scream had to be added by tech whizzes at a later date.