What movies defy the laws of physics?

Answer 1

Any film where a noise is heard in space because sound is carried by a fluid (in a land-dweller's case, air, in sea-dwelling creatures (whales, dolphins etc) case, water) so it can't be heard in a vacuum. Therefore, one of the biggest flouters of this law is "Star Wars". However, the destruction of the Death Star would be a bit puny if it were done in silence. (Note, in "Alien" the sound of the 'Nostromo' exploding is heard from the escape pod. This may be feasible because the gases and debris from the exploding transporter could be buffetting the pod(-ule) around and making the noises that are heard.)

"Hulk". Before David Banner changes into the Hulk, he neither eats nor drinks copious amounts of substance to increase his weight. This means the Hulk weights exactly the same as David Banner because of an awkward law called the 'Conservation of Mass'. And, in that case, his bones would be incredibly brittle and his skin would be as thin as tissue paper. With a body like that, he would be very unwise attacking sturdy metal objects like planes and vehicles, his bones would shatter, or entering the upper reaches of the atmosphere where the pressure decreases; he'd simply explode.

Answer 2

Almost every Science Fiction movie.

There is no ability to have "Faster than Light" (FTL) travel, or "Warp Travel" which is shown in Star Trek, Star Wars, etc.

The acceleration to accelerate a space ship to FTL travel in a manner of minutes would leave people as a smudge on the rear bulkhead. It certainly would not be recommended to be standing up,

Some shows display a MASSIVE ship hovering above a city (Independence Day, V, etc). While theoretically it is possible to make a large balloon hover, the ships aren't portrayed to be a balloon or particularly using energy for the hovering.

The original Star Wars movie (IV) showed a cloud under the land speeders... When the movie was re-released the cloud was removed. What is holding it in the air?

What the heck is "Red Matter"?

Can you explain the physics of a light saber?

What is the deal with stars flying past with "warp/ftl drive"? For example in the Star Trek Movie (First Contact), they hit "Warp 2". Stars fly by. Then they turn around, and see the planet earth behind them... What was the deal with seeing the stars fly by, and also seeing earth?

Sci-Fi movies also often have faster than light communications... also not possible. But, if you are say... 100 light years from earth, should one wait 100 years for communication transmission?

Time Travel is a favorite Science Fiction topic, for example "Back to the Future". But, there is little basis for being able to selectively travel forward or backward in time.

Was MOSES able to make the waters part in the movie?

Jumping vehicles like is done on the Dukes of Hazard or SPEED.... well, at least requires far more forethought than is portrayed on the movies.

Many spectacular kung-fu fights require harnesses and etc that aren't shown on the movie. The Forbidden Kingdom shows people flying, walking on walls, etc. Same goes for the Matrix (which is, of course, violating physics by design).

"Fantasy", Vampire, and similar movies like to show transformations from people into birds, frogs, etc. Physically impossible. An example might be "The Shaggy Dog". Many transformations are non-mass preserving, which would certainly violate physics.

Perhaps wizards craft as in The Seeker with projecting fire from one's hand or emitting some kind of repulsor from one's hand.

Harry Potter does some pretty spectacular movements... Flying on Brooms? Transformations into animals and back? Vanishing, jumping from one place to another?

Where did all the water come from in 2012?

Now, just how many toys can Santa Claus stuff into his bag? And flying through the air in a sled?