Factual error: Gordon Brown is played by an actor who is 6ft 3in, while Tony Blair is played by an actor significantly shorter at 5ft 9in. Tony Blair is in real life fractionally taller than Gordon, at 6ft and 5ft 11in respectively.
Factual error: During the bank car heist at the start of the movie, the guard who leaves the drivers seat and fires with a rifle fires way more shots than is feasible without reloading at any point.
Factual error: There is no way that the Jack's cigarettes and cigars could have survived being washed up on shore.
Factual error: In the courthouse scene the flag behind the judge is a Texas state flag, not a Georgia state flag.
Factual error: The DC shore based radio operator mistakenly tells the last known coordinates of SS Poseidon as 28° East longitude and 80° from Greenwich. That is nonsense because both mean longitude. Even though it can be assumed that what she really mean is Latitude: 28 degrees South and Longitude: 80° East from Greenwich, that is still not enough to specify the ship's position as the margin of error is about 400km. (01:25:20)
Factual error: In the scene where the Gingerdead Man is finally defeated, he fires a six shot revolver at the hero seventeen times without reloading.
Factual error: The trip goes back 65 million years. This is the late Cretaceous period. The Allosaurus was a Jurassic period dinosaur, which became extinct before the beginning of the Cretaceous period. Granted, the Allosaurus was probably the most powerful predator of its time, the events in this movie take place long after the time of the Allosaurus.
Factual error: Loosely based on the novel by Jules Verne, the entire story takes place on a remote Pacific island in the early 1860s. However, as pirates come under attack by a sea monster (in the second half of this two-part film), a modern fishing trawler or tugboat appears momentarily on the far right of the screen. (00:59:05)
Factual error: At the end of the film, Gina has her friends turn up the radio, and then screams into the phone "I'm on the radio" whilst hearing her voice live out of the radio speaker. In reality, live calls on the radio are delayed many seconds in case of editing needed due to language, etc. She would hear herself out of the radio on a delay, not live.
Factual error: One of the male character is shown wearing a BDU, or Battle Dress Uniform, which wouldn't be developed until the late 70s and wouldn't be released until around 1982, 10 years after the storyline.
Factual error: The oldest of Frank's sons has the other five boys lined up facing him. He issues the command, "About face!" Each of the boys makes a quarter-turn to the right, which is "right face", not "about face."
Factual error: When Sid gives his credit card to Jay to pay for their meal because Jay's mom doesn't have enough money, a magnetic strip is on the back of the card. This technology wasn't used on credit cards until 1980. The film takes place in the 70's.
Factual error: When Helen is leaving church, she says it's April 25th. In the movie, the year is 2003 (you can tell because she writes dates in her diary). April 25th in 2003 was actually Friday not Sunday.
Factual error: In the web chat you can see the term 500 mbps on her streaming. That's far higher than any realistic speed for that time and place, and way above what's needed for web chat anyway. (00:22:50)
Factual error: After falling into the pit of needles, somehow all of the needles in Amanda's skin stay intact and do not break, despite her fall and her rapid digging through them. Very, very unlikely at best. (00:50:50)