Factual error: After the naval battle, Thraex is waiting for an informant who tips him off about Lucilla and Marcus Acacius's plans. And of course, as a well-educated gentleman of 200 AD, he kills time by reading the newspaper. Wait, what? Needless to say (to anyone but Ridley Scott, probably), ancient Romans wouldn't/couldn't exactly get their news by newspaper, the press having not been invented yet. This one looks so modern in its layout it even has headlines and a proper publication title, "Roma Viridia."
Factual error: Ian Fleming explains to March-Phillipps that the U-boats need "fuel and torpedoes, but they also need carbon dioxide filters, for oxygen." U-boats didn't have CO2 filters. They had the air on board when they dived, which, along with the batteries supplying the electric motors they used when underwater, limited the time they could remain submerged. There were several instances of U-boats being forced to surface after long periods of being depth charged; their air supply had been exhausted. (00:12:00)
Factual error: The Torre delle Milizie is visible from the courtyard in the Vatican and looks fairly close. You can't even see the tower from the Vatican. It's quite a long way away.
Factual error: When Raban meets the Baron Harkonnen in Harkonnen's bath, the water reaches nearly the top of the bath. As Harkonnen's large body descends into the liquid, the level of the liquid does not rise, in contradiction to Archimedes' principle. (00:46:37)
Factual error: Andy crashes on an uncharted planet, and his personal assistant says the atmosphere is 2% oxygen. This is over 90% less than the oxygen concentration on Earth. When Andy comes across his crashed and burning ship (the "Borealis"), the fire is burning just as brightly as it does on Earth. The fire should be shown as burning much lower due to the small amount of oxygen.
Factual error: In Episode 1 we see a view of the Vegas strip labelled 1956. We see several more recent cars including a 1963 Cadillac Fleetwood.
Factual error: Throughout the movie, we see soldiers at the air base control center communicate with the aircrafts using an RT-524 radio transmitter. This radio operates in the VHF range, which is not suitable for communication with fast jets due to the Doppler effect. To communicate with jets, you need a UHF range radio.
Factual error: Multicoloured ring ropes didn't come into the sport until the 70s.
Factual error: When Sue starts losing her teeth, she pulls out incisor and canine teeth. These frontal teeth, however, have a single root apex, not two as it is depicted in the movie.
Factual error: George Carlin is played in the movie by Matthew Rhys. They went as far as to recreate with him, on a prop, the cover of "An Evening With Wally Londo Featuring Bill Slaszo", the album that Carlin pitched at the end of the original episode and that Rhys brings on stage in this movie at dress rehearsal. However, in this cover, Rhys is looking to his upper left, Carlin looked to the upper right. With such attention to detail, it's easy to imagine it could be deliberate. (00:43:00)
Factual error: Someone shouts "jobsworth" at a London Underground official. This term is first recorded in 1970. The film is set in 1940.