Most spectacular piece of scientific revisionism in film.

[PsychoSerenity]

Idea shamelessly stolen from Pappa's thread.

Most science fiction is completely forgiveable on the basis that "Any sufficiently advanced technology is indistinguishable from magic". And usually most people are perfectly happy to go along with the whole 'suspension of disbelief' thing, no matter what happens. However, there are some instances of Hollywood science that are so stupid they're almost worrying.

The worst case I've seen recently was in G.I. Joe: The Rise of Cobra. - The nanotechnology and the power suits were not a problem at all, but what I couldn't forgive - was the sinking ice.

Anyone else have any examples of really bad Hollywood science?

[Gawdzilla Sama]

The Disney movie "Black Hole". The good guys go through a black hole, with the help of an angel, and come out safe on the other side. The bad guy goes through the black hole, and winds up in Hell. (Or Indiana, it's not really clear.)

[Animavore]

Dare I say humanoid aliens in almost any film?

Nah. I'll go by something that goes against something we do know.
In the film Apocalypto there's an eclipse and a full moon in the same day/night.

[Animavore]

Oh and everyone sliding along to ground to port side when the ship banked in space in Wall-E really annoyed me.

[Feck]

Any and ALL films where people survive in a vacuum by wrapping up warm and holding their breath.

[Gawdzilla Sama]

Apollo 13! They actually tried to make us think we went to the moon!

[Animavore]

Any and ALL films where people survive in a vacuum by wrapping up warm and holding their breath.

I thought breathing out was what you had to do?

[Random Mutant]

Any and ALL films where people survive in a vacuum by wrapping up warm and holding their breath.

Arthur Dent and Ford Prefect did it and survived, so I don't see what the problem is...?

[Animavore]

Oh yeah. I hate lasers which fire like bullets. WTF? It should look no different to turning a torch on and off.

[PsychoSerenity]

Any and ALL films where people survive in a vacuum by wrapping up warm and holding their breath.

I thought breathing out was what you had to do?

As far as I understand it, you would violently leek fluids and gases from every available orifice (they certainly never have that in the films) and would be in a lot of pain, but would survive for a little while.

[PsychoSerenity]

Oh and everyone sliding along to ground to port side when the ship banked in space in Wall-E really annoyed me.

Reminds me of Star Wars when a ship is in free fall towards a planet and tips up, and everyone falls down in the ship, rather than appearing to float.

[Gawdzilla Sama]

Any and ALL films where people survive in a vacuum by wrapping up warm and holding their breath.

I thought breathing out was what you had to do?

As far as I understand it, you would violently leek fluids and gases from every available orifice (they certainly never have that in the films) and would be in a lot of pain, but would survive for a little while.

I've heard both, but seen little to support either. (Actual live tests, that is.)

[Arse]

In Back to the Future when the kids start fading out of the photograph one by one. Wouldn't the photograph just disappear altogether?

[colubridae]

Oh and everyone sliding along to ground to port side when the ship banked in space in Wall-E really annoyed me.

Reminds me of Star Wars when a ship is in free fall towards a planet and tips up, and everyone falls down in the ship, rather than appearing to float.

The same in aliens, when the marine dropship 'falls' out of the orbiting space-warship.

[Gawdzilla Sama]

In Back to the Future when the kids start fading out of the photograph one by one. Wouldn't the photograph just disappear altogether?

No, because the place where it was taken still existed. They were just getting dealt out of the hand.