Lord of the Flies is supposed to be set a little way into the future. Have a look at the book.

In Lord of The Flies, one of the boys is pretending to be shooting. He repeatedly shoots(bang, bang, bang, etc.) In the time of which this was suppose to be set in they didnt have repeating guns. They only had muzzle loaders. One shot and you had to reload. My husband noticed this one.

I think the original Lord of the Flies has more obvious goofs than any other film I've seen. In spite of them all, it is a good film. But one that always makes me laugh is when Jack has a banana in his mouth and you can still hear him talking perfectly clearly.
Another film goof that is just as obvious is an outdoor scene in the original Frankenstein (1931) where you can very plainly see vertical lines against the twilight sky.

Gladiator. In the fight with the wagons in colosseum. you can clearly see some gas containers at the back of one of the wagons. Can't belive i saw the film so many times before i actually saw it happen.
Not very obvious then, was it?

soo obviously it wasn't that obvious

Gladiator. In the fight with the wagons in colosseum. you can clearly see some gas containers at the back of one of the wagons. Can't belive i saw the film so many times before i actually saw it happen.
Best picture ever!
http://s3.gladiatus.no/game/c.php?uid=31241

The most obvious goof of all time is an actual movie and it is called "Troll 2"
If the actors aren't actually trying to act the worse they possibly can they should be taken behind the shed if you know what I mean.

Someone's been watching (in a high pitched tone) cinema sins

I think there was a lot more wrong with that movie besides the filming goofs. Take for example that T Rexes supposedly walk with their heads down tails out for balance, not up right as sown in the movie.
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Actualy, from memory all of the wires that he is contacting are electric. If all the wires he is touching are at the same electrical potential then there is no current flow, and no electric shock.
"If our own government was responsible would you realy want to know?"

Still on the subject of
"Jurassic Park"
, how about when the power was restored to the electric fence while the boy was still on it. Enough power to stop a T-Rex, but no harm to the kid.
Wouldn't having him jump off at the last millisecond have been enough? And more believable?
Remember: In the real world, the electric shock would have knotted the boy's hand muscles closed making him unable to let go.

"Uncle Cosmo, why do they call it a 'Word Processor'?"
"It's really very simple, Skyler. You've seen what food processors to do food?"

Yep I agree with that one. How big do they think a T-Rex is.
Blood will be spilt this night

In "Jurrasic Park", when they, Dr. Grant, Dr. Malcolm, etc., were taking the tour, the cars reach the T-Rex paddock and it breaks through the fence to the thier right. Minutes later, the T-Rex sends Tim and Lex's explorer over the same wall it came from. The plunge down the wall/cliff onto the tree is far too large for a full grown T-Rex to "climb over" onto the road. Let alone that in the film, the T-Rex was shown looming above the explorers from the same side of the fence where this "cliff" exists.

The 80's movie Cobra, with Sylvester Stallone. (Mr Marion Cobretti) was firing a gun from the back of late 80's pick up, at one point the make and model of the truck change. If a person just watch the tail gate on the truck, you'll see the difference.
Slim

ADVENTURES OF DON JUAN
Early in the movie, Don Juan is thought to be an Spanish nobleman who has come to be married with an English aristocrat in a match arranged by Queen Elizabeth, and he is given a big welcome that includes a huge display of flags, all very beautiful, and all very fictional, since they don't represent any real life noble house or any real life population center.
About the middle of the movie, when Don Juan serves King Philip III as fencing master of the court, he shows Queen Anne what are supposedly the flags of Corte's, Alvarado, Balboa, Pizarro, Orellana, Jime'nez de Quesada, Valdivia, Garay, Ponce de Leo'n and all the other conquistadores. If you look carefully at those flags, you'll see that THEY ARE EXACTLY THE VERY SAME FLAGS THAT WERE DISPLAYED IN THE SCENE DESCRIBED IN THE FIRST PARAGRAPH.
Another mistake, which everyone who knows the legend of Don Juan will likely catch: his family name is misspelled as MARAN~A, when it should be MAN~ARA.
God is subtle, but He is not malicious. (Albert Einstein)

Alone in the Dark 2005
A female character is killed and they move her body to the floor of the cave. At the end of the scene she is seen picking her head up and puting her hands beneath her as the other characters start walking away.. I guess she needed a ciggarette..

Isn't that the same movie Jackie Chan broke his foot in and had to where a cast to finish?
No.
You're thinking of
Rumble In The Bronx (1995)
Jackie Chan breaks his ankle jumping onto a hovercraft and has to finish the film with a foot cast disguised as a tennis shoe. It's all shown as part of the blooper reels thata number of his films are known for in the credits. Also mentioned in the trivia for the film on this site.
I joined the Navy to see the world, only to discover the world is 2/3 water!

Isn't that the same movie Jackie Chan broke his foot in and had to where a cast to finish?
I could be mistaken but I do remember in 1 of the Rush hour movies he had to finish in a foot cast I just don't remember which one. They did try to make it to look like the original shoe as close as they could.
Hope that helps

Bump
http://www.howfelonscangetjobs.com

Granted it probably IS a good, but all that awesome action and you're checking out their shoes? Bro, come on

Woah, that's pretty wild

It's a Wonderful Life. Toward the end of the movie where George is in the cemetary at his brother's grave, the dates don't match up with what they said his age was when he died.
"I don't need some middle-age menopausal man telling me how to run my life!!"

I would suggest the disappearance/absence of gore in the lecture auditorium after the exploding head in 'Scanners' (The reason was that Louis del Grande's character was originally supposed to have died from a heart attack, but still too obvious and glaring to be acceptable.)

I think that still falls clearly into the "goof" category.