15+ Obvious Movie Mistakes That Still Ended Up On The Big Screen

1. American Sniper.

We've all seen Bradley Cooper in American Sniper, right? He played the legendary sniper Chris Kyle and he proved his amazing acting skills in this movie. American Sniper was the highest grossing movie in the US, in 2014, beating The Hunger Games as well as Guardians of the Galaxy making over $337 million in the US. No matter how good Bradley's acting was, he couldn't make this fake baby seem real...

2. Legally Blonde.

Legally Blonde has to be one of the most memorable chick flicks of the 00s. Reese Witherspoon appears in a scene where a law student drinks from a water fountain while Witherspoon is on the phone in the hallways. But if you look carefully, you'll notice there isn't even any water coming out of the water fountain!

3. Legally Blonde.

The water fountain scene wasn't the only mistake while filming Legally Blonde. Actors always need to hit their mark so the camera can frame them properly. In this specific scene, you can clearly see costar Selma Blair waiting for her cue in the mirror behind Reese Witherspoon.

4. Harry Potter & the Chamber of Secrets.

The Chamber of Secrets is the second movie in the Harry Potter franchise and it follows Harry & his friends and the new challenges they face as they discovered the dark force that terrorised their Hogwarts. There's a scene where Harry Potter and his enemy, Draco Malfoy duel with their wands. You can see the cameraman clearly in a group shot of the class. I guess he couldn't move out of the way quick enough.

5. Grease.

This 70s movie followed the adventures and romances of a group of high school kids in the 1950s. In one scene, Diner owner Vi tries to turn off the lights with her elbow as she and Frenchy walk down the stairs. If you look closely, Vi's elbow misses the light switch completely but the lights still turn off.

6. Hitch.

Will Smith starred as Alex Hitchens, a 'love coach' who helps hopeless men find love with much better-looking women. If you've seen this film, you'll remember this hilarious scene when Will Smith's character has an allergic reaction to some seafood. Well, the right side of his face swells up like a balloon but later in another scene, the swelling is on the opposite side of his face.

7. Miss Congeniality.

Sandra Bullock played tomboy turned beauty pageant star Gracie. She prides herself on being "one of the boys" and if horrified when she's picked to become an undercover beauty star. During the final beauty pageant scene, the bouquet of roses passed back and forth between Sandra Bullock's character and another contestant magically regrows the red petals that fell off.

8. Soul Surfer.

Lime green is often used by special effects teams when they need to block off objects so they can easily edit them out in certain scenes. However, the green tapeused on Anna Sophia Robb's arm - which was supposed to be amputated - was never edited out.

9. Dirty Dancing.

Dirty Dancing was one of the biggest movies of the 80s and continues to be an extremely popular film around the world. But even Dirty Dancing had mistakes in it! In the scene where Patrick Swayze is supposed to be driving, you can see the vehicle's gear shift is clearly set in the park position.

10. Willy Wonka & the Chocolate Factory.

This 1971 film has more movie mistakes than you might have realised. In one of the first scenes, where the candy shop owner sings to the children, he raises his countertop and literally smacks one of the children in the chin.

11. Willy Wonka & the Chocolate Factory.

Remember Charlie's Grandpa Joe? Well, he was bedridden at the beginning of the film? But all of a sudden, somehow, he was able to sneak to the candy store and buy Charlie the candy bar that got him the golden ticket....I smell benefit fraud.

12. Avatar.

Did you know that Avatar is the world's highest-grossing film of all time? The movie followed the story of the alien world of Human Jake Sully who falls in love with a Na'vi woman. Correct proportions are always important when shooting a film. At the end of Avatar, Jake's human hand is completely disproportionate to the cheek of the 10-foot-tall Na'vi.

13. The Fifth Element.

The sci-fi cult classic starred Bruce Willis and Milla Jovovich. It includes a scene where Jovovich's character Leeloo escapes jail. Just before she punches through the glass window, you can see the outline of the glass she's about the breakthrough. I mean, you have to have very good eyesight and pause the movie at the exact right second but you know...

14. It's A Wonderful Life.

It's a Wonderful Life was and still is one of the greatest Christmas movies of all time. The movie tells the story of George Bailey, a troubled and unhappy man who is visited by an angel who makes him realise how many lives he has changed and impacted.In one scene, Clarence reveals to the audience that George's brother died when he was only 9-years-old but the dates on his tombstone indicate he was actually eight.

15. Twister.

This high-impact thriller starring Bill Paxton and Helen Hunt is about a...you guessed it, a Tornado. A large piece of metal debris smashes the right side of a truck window in one scene, but immediately after, the left side of the windshield is cracked. Strange?

16. The Wizard of Oz.

Everyone's seen this classic film, haven't they? But I bet you didn't notice that it's the Tin Man who releases the hot-air balloon in the very end of the film. Then the tin man suddenly acts surprised by the whole incident.

17. Frozen.

Probably one of the most popular animated films of recent years The songs from Frozen were stuck in everyone's heads for months, I mean, you can hardly get through Christmas without hearing someone blurt out one of the songs from the film. In one of the scenes, you see Elsa's braid quickly passes directly through her left shoulder as she walks and sings. Somehow the editors forgot the edit it out.

18. Braveheart.

Actor and director Mel Gibson let something slip during one of the amazing battle scenes.  If you take a look at the bottom-left side of the screen you can see a vehicle parked in the background even though Braveheart was supposed to take place in the 14th century. Hmmm, maybe time travelling really exists?