Factual error: In the scene where Neo is shot at by the French guy's henchmen, they shoot with different types of guns. 4 of these are submachine guns which would fire 9mm. Another is a M1928 Thompson would fire .45 APC. Lastly there is a Heckler and Koch G36K which would fire the drastically different 5.56x45mm NATO. When Neo stops the bullets, they are all 9mm Parabellum rounds.
Factual error: The ship, VIRGIL, is diving straight down from the crust to the core. Although the interior of the ship pivots to make the cockpit perpendicular to the descent, the ship itself is "digging" straight down so when people move from compartment to compartment they should be climbing up and down rather than simply walking back and forth.
Factual error: When Shorty is removing Jennings' memories in the beginning, the pictures shown are from a third person viewpoint. If they are his memories, shouldn't these be from Jennings' viewpoint? (00:06:40)
Factual error: In a shot near the beginning of the film, the gravestone for Allan Quatermain's son is misspelled "Quartermain". [People are trying to correct this, saying the spelling's correct - no it's not: http://uk.imdb.com/Title?0311429.] (00:12:50)
Factual error: Dinky Winks has a branding iron that says 'Dinky' when it faces out, but we should be reading it backwards. When he uses this brand, then it will be backwards.
Factual error: Both the English and French armies are wearing uniforms (English red and the French blue). An army would not have had a uniform at this time - each knight would have his own standard and colours - these colours would also have been worn by his squires. The peasants (bowmen) would wear their own clothes - usually a brown or other earth tone, and definitely not a red/blue tabard.
Factual error: The Hulk picks up a tank, swings it around and hurls it about a mile away where it crashes into a sand dune. The impact should have been as strong as a plane crash, but a few shots later, they show one of the tank crewmembers standing casually outside the tank, watching the Hulk, as if nothing happened to them. All of the men inside the tank should have been seriously injured from the impact, if not dead. (01:38:25 - 01:39:45)
Factual error: When Arnold is done shooting at the cops in the graveyard scene, there are birds singing in the background. No way that any birds would be left in that area (not to mention singing) after at least 15 machine guns have been firing for more than 2 consecutive minutes, not to mention the cop car exploding. (00:55:50)
Factual error: Unless Marion has a ridiculously large front room, the guns should have come down as he was blasting the zombie with the shotgun.
Factual error: In the scene at the beginning, where Jonesy is in back of the ambulance after being hit by the car while crossing the road, they show the paramedics shocking him with the defibrillator. After the first shock, one of the medics says that Jonesy is still flatline and says to hit him again. This would not normally happen because you don't defibrillate in an Asystole rhythm (flatline).
Factual error: The flight of the Hammer is a very bumpy one and more than once the ship is either upside down, on its side or straight up and down. The crew of the Hammer are completely unaffected by this and keep feeding ammunition to the guns. The Hammer's movements should be tossing them around since they aren't strapped to a chair like the pilots and the gunners are.
Factual error: In the scene where Wolverine is shot in the head the bullet stays in place until it falls off. Wolverine's skull is indestructible Adamantium (that doesn't even bend slightly from the impact), and an object that applies a certain amount of energy towards another object has the same energy applied to it in return. Considering the bullet's high speed (which means high energy) and the fact that there is not enough material around Wolverine's skull to absorb the bullet's energy, the bullet should have bounced right out.