What do Star Wars, Indiana Jones, King Kong, Reservoir Dogs, Planet of the Apes, Kill Bill, Lethal Weapon, Batman, Lord of the Rings, Howard the Duck and even Family Guy all have in common?
They all have used a sound effect known as "The Wilhelm scream." It ranks among the sound effects cliche elite along with castle thunder, the screech of a red-tailed hawk and Goofy's holler ("yaahh-hoo-hoo-hoo-hooey!!"). Id also add to that list the sounds they used in the TV show "Flipper" that seems to pop up every time they need the sound of a dolphin in a movie.
Here's everything you ever wanted to know about the inside joke known as the Wilhelm Scream, courtesy Steve Lee from Hollywood Lost and Found (his site is down right now, but we hope it will be back soon):