Narrator: Does this scream sound familiar? That's because it's used in over 100 films. It's a movie trope called the Wilhelm Scream. Jonathan Kuntz: The Wilhelm Scream is maybe the most famous ...

Just then, a lone stormtrooper comically falls off a ledge ... with more than 400 Hollywood films utilizing the Wilhelm scream to varying degrees and effects, making this wildly popular yelp ...