Jurassic Park had plenty of impressive animatronics, but these practical effects sometimes required operators to work extremely close to the creatures. In a frequently discussed visual slip, a human hand can reportedly be spotted steadying a Velociraptor's tail. It's a really small mistake, but once you've seen it, you won't forget it. | © Universal Pictures/Amblin Entertainment
The police lineup scene in The Usual Suspects is supposed to be a straightforward scene, but the actors keep breaking into laughter as they struggle to deliver their lines. The repeated attempts to get through the scene reportedly became more chaotic over time, and the final version captures some of that barely contained amusement. We're glad it was kept in the film because the laughter gives the sequence a great energy. | © PolyGram Filmed Entertainment/Bad Hat Harry Films
Jennifer Lawrence and Chris Pratt play two passengers in 2016's Passengers. A mistake happened when their characters' bulky space suits made close physical contact look a little awkward, including their first kiss. "We tried to kiss after our first date. We were in our space suits, and we didn't realize that our spacesuits wouldn't allow us to do that. So the director called action and we just like ran into each other," Lawrence described in an interview. | © Columbia Pictures/Village Roadshow Pictures
Rose's facial mole in Titanic has repeatedly been called out for appearing to change position from the left to the right cheek between shots. This reportedly was the result of filmmakers accidentally flipping the shots in post-production. It's a tiny detail that's easy to miss, but once you start looking for it, the inconsistencies in makeup and character details can be surprisingly noticeable. | © Paramount Pictures/20th Century Fox
After Harry returns from the Black Lake during the Triwizard Tournament's second task, Hermione wraps a towel around him. However, in the next shot, the towel appears to remain on Hermione's own shoulders. The little continuity error in Harry Potter and the Goblet of Fire is pretty noticeable because the light-colored towel stands out against a scene that is largely dark. | © Warner Bros. Pictures/Heyday Films
Jake Gyllenhaal's performance in Nightcrawler as the unhinged Lou Bloom takes a frightening turn when he smashes a mirror during an outburst. The scene is unsettling partly because the violence feels so sudden and uncontrolled. Allegedly, Gyllenhaal improvised the scene, and it wasn't actually meant to happen. | © Bold Films/Open Road Films
Pirates of the Caribbean: The Curse of the Black Pearl is full of pirates, cursed treasure, and old-fashioned sailing ships. It's also got a random cameo. For keen-eyed watchers, you may have noticed a crew member wearing what appears to be a cowboy hat and sunglasses, standing to the left in the background in one of the film's final scenes. It's certainly a jarring thing to see in a crowd full of pirates. | © Walt Disney Pictures/Jerry Bruckheimer Films
When Aragorn, Legolas, and Gimli discover what they believe to be the remains of Merry and Pippin, Aragorn kicks an Orc helmet in frustration and collapses in anguish. His scream sounds painfully convincing because it was: Viggo Mortensen actually broke two toes when he kicked the metal helmet. Director Peter Jackson later kept the take in the final version of The Lord of the Rings: The Two Towers. | © WingNut Films/New Line Cinema
One of the most memorable moments in Django Unchained happened because Leonardo DiCaprio accidentally cut his hand while smashing a glass during a dinner scene. Rather than stopping, the actor continued performing with blood running down his hand, which actually made the moment even more disturbing. The cast's reactions are genuine, and Tarantino kept the take in the final film. Sure, it's not exactly a blunder, but it definitely wasn't scripted. | © A Band Apart/Columbia Pictures
Robin Williams' portrayal of the titular character in Mrs. Doubtfire is iconic. However, the many makeup mishaps are another memorable aspect of the film. One specific moment is Mrs. Doubtfire's face mask dripping into a cup of tea. This "melting" scene was reportedly an unscripted moment that was the result of the hot studio lights. | © 20th Century Fox
The original Gladiator is quite the historical epic that goes to great lengths to recreate ancient Rome, but one chariot-racing scene briefly breaks the illusion. When a chariot flips in the arena, a modern gas cylinder is briefly visible underneath it. It's a piece of practical stunt equipment that somehow survived the editing room. | © Universal Pictures/Scott Free Productions
Cher Horowitz is confident about almost everything, but her classroom speech about Haitian refugees is a classic blunder in Clueless. Alicia Silverstone actually didn't know how to pronounce "Haitians" correctly, which led to her saying it as "Hay-tee-ans" instead of "Hay-shuhnz." Director Amy Heckerling reportedly liked the incorrect pronunciation so much that she told the crew not to correct the actress because Cher "needed to have that assurance that she was saying it right." | © Paramount Pictures
The Matrix suffered from a minor blunder when filming with an object that was super reflective. In one scene where Neo and Morpheus are set to visit The Oracle, a camera lens can be seen in the reflection of a doorknob. It appears that the filmmakers attempted to cover the camera with a coat, but there was little that could be done to hide the protruding lens. | © Village Roadshow Pictures/Warner Bros.
When a group of stormtroopers enters a control room aboard the Death Star in Star Wars: A New Hope, one unfortunate soldier bangs his helmet against the top of the doorway. The moment is quick, but the sound and movement make it surprisingly noticeable once you know it's coming. The blunder became so beloved that it's appreciated by the entire Star Wars community. | © Lucasfilm Ltd./Twentieth Century-Fox
Mia Thermopolis has plenty of awkward moments in The Princess Diaries, but Anne Hathaway's real-life tumble during a basketball scene was especially memorable. The scene saw the actress lose her footing on slippery bleachers and fall, but she continued performing rather than stopping the scene. "I turned really fast, slipped on a puddle, and just fell," according to Hathaway in an interview. | © Walt Disney Pictures/BrownHouse Productions
Even the biggest film productions aren't immune to continuity errors, accidental cameos, and random props that mysteriously appear between shots. Some slip-ups last only a second, while others are surprisingly easy to spot once you know where to look. That said, here are 15 mistakes you'll still be able to spot in some of your favorite movies.
