Best movie revealing mistakes of 1971

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Diamonds are Forever picture

Revealing mistake: Bond escapes from the buried pipeline when two technicians open a hatch from the outside. One tech unlocks the hatch by rotating a large wheel which drives the locking mechanism. But when he finally opens the hatch, there's absolutely no mechanism attached. There's just a bare axle that the wheel turns on.

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Willy Wonka & the Chocolate Factory picture

Revealing mistake: When Charlie and Grandpa Joe drink the fizzy lifting drink and are floating in the air you can see the hook that is connected to the wire that Charlie is being held up by.

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Duel picture

Revealing mistake: Just before the truck slides off the cliff edge, you can see that the truck's cab door is open where the driver jumped out.

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Bedknobs And Broomsticks picture

Revealing mistake: After Lansbury makes her clothes start to move, her nightgown attacks someone and you can notice the strings that make the gown move.

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The Omega Man picture

Revealing mistake: In the scene at the stadium where Lisa is helping Neville escape from Mathias' people, it is extremely obvious that in the far shots, it is a stunt man (wearing a very bad grey wig) driving the motorcycle, and Charlton Heston in the close up shots.

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The Abominable Dr. Phibes picture

Revealing mistake: When the bats invade Dr. Dunwoody's bedroom, you can see the strings on one of them.

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A Clockwork Orange picture

Revealing mistake: During the driving scene, the background is illuminated by non-existent headlights. It's running backward on the projection screen.

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Dirty Harry picture

Revealing mistake: Near the end the psycho killer pays a black man to beat him up so that he can then blame the injuries on Dirty Harry. Watch the killer's hairdo as he gets punched and beaten: a couple of rear-view scenes show an obviously fake wig, intended to look like the killer's own bad-hair-day style. (01:16:05)

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Le Mans picture

Revealing mistake: In the slow motion crash of Steve McQueen's Porsche 917 you can clearly see that the car is empty.

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Vanishing Point picture

Revealing mistake: At the beginning of the movie, when Kowalski is chased by cops on motorcycles on a dirt road, in the shots from behind the Challenger you can see two people in the car.

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Big Jake picture

Revealing mistake: Whenever 'Dog' gets wet (like fording a river) his makeup runs and you can see that he is really 'Lassie'.

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Support Your Local Gunfighter picture

Revealing mistake: A 'bald wig' is visible on Harry Morgan when he first arrives in Purgatory.

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Dad's Army picture

Revealing mistake: When the platoon hear the church bells, they mistake it for the invasion signal and construct a barricade across the high street. If you look behind them you can see cars parked on the road in the distance that date from well after the 1940s.

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Summer of '42 picture

Revealing mistake: Just before Hermie goes into the drug store to buy the condoms, you can see his breath when he is talking even though it's supposed to be summer time.

William Bergquist
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Escape from the Planet of the Apes picture

Revealing mistake: Throughout the film, when the camera goes close to Zira, you can see the line where her wig is glued on.

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Shaft picture

Revealing mistake: When Shaft and his buds are sneaking into a building to save Bumpy's daughter, a pedestrian momentarily comes into the shot and then quickly steps out when he sees the camera crew.

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Von Richthofen and Brown picture

Revealing mistake: When Von Richthofen is shot down and crash-lands in the combat zone, German and British soldiers arrive and fight for possession of the Red Baron's plane. It is strange, though, that the German soldiers fire British Lee Enfield rifles instead of the German Mauser Gewehr 98.

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On the Buses picture

Revealing mistake: When Stan drives through a puddle and splashes Blakey the water just reaches Blakey's knees but in the close up the water that goes in Blake's face is obviously thrown at him from a bucket.

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The Andromeda Strain picture

Revealing mistake: During the helicopter flyover several 'corpses' are seen lying in a depression in the dust where they fell after dying (imagine a 'snow angel' to see what I mean). However, there are no footprints leading up to any of them. Any soil loose and powdery enough to form a depression when a body lands in it would hold footprints. And if there was a strong enough wind to erase footprints it would have piled some of the dust up against one or more sides of the body.

Grumpy Scot
Upvote valid corrections to help move entries into the corrections section.

Suggested correction: Unless you are suggesting that the production crew dropped the actors into place from a helicopter, the configuration you see is obviously possible in real life. The actors playing the corpses walked to their positions for filming.

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Carry on Henry picture

Revealing mistake: When Henry VIII runs out of the cowshed from the irate farmer, you can see it is not Sid James but his stunt double.

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