Though hundreds, and sometimes thousands, of people work on the production of major motion pictures, so it's inevitable that sometimes mistakes slip through the cracks and make it through the final edit. Some of the biggest blockbusters in history include oversights, false information, and other snafus that apparently went unnoticed on the cutting room floor.

Sharon Stone in "Total Recall"
Keep reading to see the funniest, weirdest, and annoying hidden mistakes that you likely haven’t noticed in some of your favorite films:
Pretty Woman
In Pretty Woman, hunky businessman Edward Lewis, played by Richard Gere, hires the services of the street walking call girl Vivian, played by Julia Roberts in her breakout role.

Moviestore/REX/Shutterstock (8552246b)
In the Cinderella-like story, Roberts' character is taken in and undergoes a transformation. In one scene, she eats breakfast at Richard Gere's character's hotel - and is seen eating a croissant - before it magically turns into a pancake. This could be a film mistake, but her character is eating so quickly that it could be excused.
Clueless
During Cher's driving test, she runs into another vehicle and destroys her sideview mirror, causing it to fly off, but it reappears in the next scene.

"Clueless" (1995)
Clueless' director, Amy Heckerling, studied real Beverly Hills high schools to get the feel for how real teens in the 1990s talked and acted - but the movie's plot is actually based on a much, much older society: it is, in fact, a loose adaptation of Jane Austen's 1815 novel, Emma.
Ace Ventura: When Nature Calls
In the second Ace Ventura film, 1995's Ace Ventura: When Nature Calls, the titular character, played by Jim Carrey, visits a swanky hunter's mansion in Africa as his pursues his investigation. As Ace interviews the rich hunter, the chessboard in front of him can't seem to decide if it wants to be empty or full.

"Ace Ventura: When Nature Calls" (1995)
The Matrix
In the first film in The Matrix trilogy, as Neo fights Agent Smith in the subway, you can see the breakaway section of the pillar before Smith punches through it. Considering how visually attentive the Wachowski siblings, who directed the film, are, and how planned each frame in the original movie was, this is quite a slip up!

Keanu Reeves and Hugo Weaving in "The Matrix"
First released in 1999, The Matrix was a groundbreaking action movie thanks to both its pioneering visual effects as well as for its cerebral, mind bending plot.
Star Wars: A New Hope
In the first Star Wars film ever released, Star Wars IV: A New Hope, there's a scene in which Luke and Leia are attempting to escape the Death Star. As they make their way through the space station's winding corridors, a unit of Stormtroopers come rushing in. As the airlock opens, one Stormtrooper hits his head on the door, readjusts his helmet and keeps going. This is clearly an unintended mistake, but it has become legendary, and in re-releases, producers even added a "thud" sound effect!

"Star Wars: Episode IV - A New Hope" (1977)
Terminator 2: Judgement Day
In Terminator 2: Judgement Day, the chief villain’s head splits in two before Arnold Schwarzenegger’s character even fires his weapon.

Robert Patrick in "Terminator 2: Judgment Day"
Terminator 2, starring Arnold Schwarzenegger and Edward Furlong, is the second installment of the popular Terminator film franchise. Written, produced and directed by James Cameron, the film was noted for its outstanding special effects and computerized graphics, as well as for Arnie's famous one-liner, "Hasta la vista, baby." It is considered one of the greatest action films ever made.