Do you notice the same sound effects being used in several movies? Some sound effects are not particularly distinguishable, but I've spotted a particular scream which is used in some of my favourite movies. 3 examples are attached. It's called the Wilhelm scream. Details of it's origins are here along with an isolated WAV of it here. The filmography of the scream is here and it's in most of my favourite films! The most recent attition being Wallace & Gromit: The Curse of the Were-Rabbit.