North By Northwestīefore the iconic chase scene on Mount Rushmore, Eve Kendall "shoots" Roger Thornhill in the National Park's cafeteria. It appears that the very young Evans needed to go to the bathroom, but didn't want to stop the take. When Doc is introducing his new family to Marty and Jennifer, you can clearly see Doc's youngest son Verne, played by Dannel Evans, gesturing for help and then pointing to his groin.
Back to the Future Part IIIĪt the very end of Back to the Future Part III, Doc Brown shows up in Hill Valley 1985 in a brand new time machine made from the locomotive he used to help Marty get back to the future. While this was considered a blink-and-you'll-miss-it moment from the original Star Wars, George Lucas added a "thud" sound effect in its special edition to highlight the gaffe. As the Stormtroopers enter, one of them hits his head on the blast door. When Luke Skywalker, Han Solo, Princess Leia, and Chewbacca are trapped in one of the trash compacters on the Death Star, a group of Stormtroopers manage to unseal a blast door to find C-3PO and R2-D2 in a control room. But sometimes, extras draw attention to themselves-either intentionally or unintentionally-and break the main focus of the scene.
They contribute to the overall believability of a scene while making it easier for filmmakers to control a set or location. Background actors, also known as extras, have one of the most important jobs on a film shoot.