Corrected entry: In season 2, episode 22 (5:00-6:00 am), Kim drops the phone in order to shoot Matheson, then she picks it up again. Then Jack tells Kim to shoot him again, so she drops the phone first, shoots him, and when she picks the phone up for the second time it is upside down. Kim was talking in to the earpiece.
Corrected entry: Season Five, 6th episode. When Audrey is named Jack's contact person there is a shot of her where she isn't wearing glasses. There is a brief shot of Buchannan and McGill leaving the room and then another shot of Audrey. All of a sudden she is wearing glasses. She could not have gotten them out and put them on in the very short shot of the two men leaving the room.
Corrected entry: When Tony's henchmen isolate the pathogen from Jack's spinal fluid, the head scientist says the viral load is higher than hoped for, explicitly stating for the first time that the pathogen is a virus. This is in contrast to everyone else referring to it as a prion up till this point.
Corrected entry: The head scientist tells Tony that the only sure way to destroy the pathogen is to expose it to temperatures around 500 degrees celsius. Surgical and lab equipment are sterilized at 120 degrees celsius under the (legitimate) assumption that nothing survives this temperature. Prions and viruses, both mostly protein, would have fallen apart by this temperature.
Corrected entry: Jack is not able to shoot Kingsley himself as he has no bullets left in the gun. But Kingsley doesn't know this so why on earth does he simply keep walking at a snails pace while Jack picks up what could be a loaded gun? Even when Jack aims it at him he doesn't think it might be a good idea to move. This is simple logic and goes way beyond a character mistake.
Corrected entry: When Mandy is talking to Tony in the apartment she says that two years ago he risked Michelle's life (in season 3). Three years seperated seasons 2 & 3 making this five years since season 2. However when Aaron is talking to the president in the next episode he mentions the attack on his life took place four years ago.
Corrected entry: In the scene where Jack Bauer is at the medical station giving the gun to the photographer, as the photographer leaves, Jack pulls a gun and holds it to the photographer's head. He cocks the gun manually, but when going to decock it, instead of pressing the decock lever, he pulls the trigger and eases the hammer down. A gun expert such as Jack would know about the decock lever, and not make that mistake.
Corrected entry: In series one, there is a scene where Jack is changing his shirt in his office, there are some very visible Japanese symbol style tattoos on his biceps. In series two, when we next see Jack's bare arms (when he is being tortured) the tattoos are no longer there.