Corrected entry: It is shown that the monkey still has a reaction to being shot, as it is thrown forward the first time it is shot. However later, when Captain Jack demonstrates to Tia that it is undead, it has almost no reaction except for backing away from the shot. When Captain Jack actually shoots it, nothing happens and he couldn't have misssed from that range.
Corrected entry: When Will is first walking around on the cannibal island and he finds Gibbs' flask connected to the string, which he later follows, he drops the flask on the ground (we can hear it hitting the ground). However, when Will is in the bone cage with Gibbs and the other crew members, Gibbs is seen holding his flask in his hand.
Corrected entry: In the movie, black powder (gunpowder) is detonated by firing a musketball into it; however, black powder detonates at approximately 320C(600F), while bullet temperature has been measured at only 267C shortly after leaving the barrel, not enough to ignite the powder. See http://www.indigosystems.com/PDF/articles/R&D_article.pdf and http://www.americanpyro.com/fireservice/Ignition%20Temperatures.pdf.
Corrected entry: The huge map in the background of the governor's office (or whoever he was) showed things that were completely unknown at the time: the system of rivers and lakes in Africa that flow into the Nile was not explored and mapped until 150 years later. The coast of Antarctica is shown at the bottom of the map - that was totally unknown at the time, and if I recall correctly, Australia was shown. Only parts of the east coast of Australia had been explored at the time. The west coast was totally unknown at the time.
Corrected entry: The Granny Smith apple originated in Australia around 1865, was introduced to England in 1935, and then to the United States around 1972. The Golden Age of Piracy is generally believed to be about 1520 to 1790. It would certainly seem that the green Granny Smith apple in this case was a bit ahead of its time.
Corrected entry: In the scene where the natives are chasing the dog along the beach, the dog is running through an area with no footprints (you can tell because he leaves a trail of new ones). This should not be the case, as a large group of the natives ran over that area less than a minute earlier.
Corrected entry: In the scene towards the end when Jack takes Davy Jones' beating heart and sticks it into his jar of dirt, he takes a lot of dirt out of the jar causing it to look very messy, but later on in the movie when we see Jack again with the jar in his hands about to bargain with Davy Jones, the jar has the same amount of dirt as it did before and it is very clean.
Corrected entry: In the scene when the Flying Dutchman makes an appearance, one of the Black Pearl's crewman shouts, "Mother Carrie's Chickens!" Why the weird expletive? It's a very sly and totally obscure reference to a Disney film from the 60's, "The Barefoot Executive" starring Kurt Russell. "Mother Carrie's Chickens" was the name of a TV program that was rated 1 and dumbfounded Russell's character since the show was picked by a chimpanzee.
Corrected entry: In the scene when Pintel and Ragetti are rowing towards the island, the dog (from the prison) is sitting in the bow of the boat, holding the prison keys in his mouth. During a shot of the two pirates, you hear a dog bark, but during the next shot, the dog is holding the keys in his mouth again. Since he's in the front, the keys should've dropped in the water.
Corrected entry: In the scene with the 'haunted dress', when the lantern is knocked down, you see the fire spreading into the word 'Tortuga.' It goes straight from the 'T' to the 'o', so those two letters are connected. But then in the shot after Elizabeth points out that is says 'Tortuga', all of the letters are separate.
Corrected entry: When the ship with the superstitious guys gets attacked by the Kraken, and Will needs to jump onto the second mast, he uses his father's knife and cuts a long tear into the second sail. In the shots where the camera is behind the sail, showing the silhouette of Will sliding down the other side, you can see through the long cut in the sail that there is no other sail or mast on the other side where Will jumped from. There is only blue sky.
Corrected entry: Although the Aztec curse was lifted in the previous movie, thus making all the previously afflicted pirates 'normal' again, the monkey remains cursed without apparent reason throughout the second film.