From Back To The Future to Titanic, here are the 12 epic blunders you never noticed in huge movie blockbusters
Turns out Jamie Foxx should never have worn sunglasses in Django Unchained - who knew?

IT'S easy to get swept up in a film, whether it's the gripping plot or the captivating performances by its actors.
Which could explain why these epic Hollywood movie clangers may have escaped your notice.
Here are our top ten movie blunders - with a couple of repeat offenders thrown in.
Titanic
While the 1997 blockbuster got a lot right, researchers messed up when it came to Jack Dawson's backstory.
During the film he recalls how his dad used to fish at Lake Wissota.
Trouble is, Lake Wissota wasn't formed until a dam was constructed in 1917 - five years after Jack went down with the ship.
Django Unchained
Quentin Tarantino's American western is set in the second half of the 19th century.
So, how on earth did Django, played by Jamie Foxx, get hold of a pair of sunglasses given they weren't invented until 1929?
Braveheart
Among a myriad of historical blunders, here are our two favourites - firstly there's the small matter of a car in the background of a 13th-century battle.
Then there's the fact Mel Gibson's character William Wallace wears a kilt - a garment not invented until the 16th century.
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Panic Room
Jodie Foster's character should have panicked when she flooded a room with propane and set it on fire while she and her daughter crouched down in the corner.
The flames engulfed the upper part of the room - which was lucky considering propane is heavier than air, so it SHOULD have sunk to the floor and burned them.
Gladiator
Another double clanger for this flick.
During a battle in the Colosseum, a horse drawn chariot flips over on to its side and if you look closely, you can see a gas cylinder in the back.
FYI — The movie is set in 180AD and stainless steel gas cylinders weren’t invented until the 1800s.
Also, Russell Crowe's character is nicknamed 'the Spaniard' - a word that didn't come into common use until the 14th century.
Independence Day
Remember that moment the Empire State Building exploded and blew a backdraft down one of the streets leading up to it?
Last time we checked the famous landmark is on a street corner with no roads leading up to it. Oops.
The Shawshank Redemption
More historical inaccuracies here!
In his prison cell, Andy Dufresne covers up his escape hole with a poster of Raquel Welch from One Million Years B.C.
But the movie wasn't released until 1967 - exactly one year after Dufresne escaped Shawshank State Penitentiary.
Pirates of the Caribbean: At World's End
In this swashbuckling adventure, set in 1720, the crew set sail for Singapore.
Hang on, Singapore didn't exist until 1819, when it was founded by British statesman Sir Stamford Raffles.
Passion of the Christ
So surely given the fact Jesus lived in the Middle East his complexion would at least resemble something like a person from that region.
But Mel Gibson cast white actor Jim Caviezel in the role of Christ. No Israeli actors out there then?
Back to the Future
Marty McFly and Doc Brown have a license plate on their DeLorean that reads 'OUTATIME'.
But number plates in California can only have seven characters maximum, so not only did they break the laws of time and space, they also totally disregarded local licensing laws. The rebels.