Other mistake: When they're running away from the embassy because of the bomb threat he uses his key chain remote to shut off the alarm to his car. Then when they get in there's an envelope, the proof of life, on the floor. The sister asks how they got in. That's a good question. The alarm was on. How did they get into the car?
Other mistake: When James Marsden and Joshua Jackson are fighting outside the prison, you see a close up of Joshua hit with a flower-pot that then cracks. A wide shot is then shown and not only is the flower-pot now intact, it wobbles when it hits the ground and when James moves it suggesting it's a fake rubber pot.
Other mistake: The president's translator puts on his headphones just before the receptionist announces the Russians are on the line.
Suggested correction: He hears the buzzer before the receptionist speaks. Not a mistake.
Other mistake: More than halfway through the film, after Gwen's room-mate has died of an overdose, she rings her sister on a phone that is not only "Emergencies Only", but it has no numbers on it. So how did she dial out?
Other mistake: In the first scene between Richard and Daffy, Daffy calls Richard by name, even though Richard has never told him his name.
Other mistake: The end credits show Annie, Clarabel, Bertie and Harold under the voice cast for "the trains", but Annie and Clarabel are rolling stock, Bertie is a road vehicle, and Harold is an aircraft, respectively.
Other mistake: Jack's friend Bill (Tom McGowan) was scheduled to have heart bypass surgery, but he is bowling the next day or shortly thereafter.
Other mistake: In the cave we see Tom Hanks drawing an analemma without a precise timekeeper, which is needed to draw one. What he could have done is a meridian rect, which is build with the meridian time. The analemma is the differential chart between the solar time and civil time.
Suggested correction: No, what we see is Tom Hanks drawing a chalk outline on a wall to approximate the date. There is no reason to assume he got it exactly right or knew exactly what he was doing. He probably started just by drawing lines on the cave wall to mark the days then noticed the light.
I'm afraid "just drawing lines" doesn't create the well-crafted analemma you see in the movie. A very precise time-keeping device is necessary: just a minute off will dramatically change the shape.
Other mistake: When Caleb and Luke are stealing the snake weather vane, when they fall into the moat, you can see the snake floating. This weather vane is presumably made out of metal and should sink like a rock but you can see it floating when they fall.
Other mistake: Joe's wife is on the phone for only a couple of seconds both times, there is no time at all for Joe's mother to tell her that she had a visitor that Joe was looking for and that he was an engineer of sorts, she barely had time to say hello.
Other mistake: When Erin starts working on the case, her youngest daughter is supposedly 10 months old. Later on in the film, Erin says she's been working on the case for 18 months, which would make her daughter more than 2 1/2 years old, but the actress playing the daughter is at least a year too young for that. Also, Katie and Matthew don't age at all over those 18 months.
Other mistake: Sophie calls her Swedish colleague "Captain Perrson", however the rank on his shoulder say lieutenant colonel in the Swedish air force.
Other mistake: In the courtroom scene, when Chief Sunday tells Brashear to stand up, the tenders go to help him up without question, and when Captain Hanks overrides him, saying that he has to stand up himself, even they look confused and surprised. They wouldn't be just some random enlisted sailors doing this, they have been trained in being a tender, and would reasonably know what the policies are. (01:56:50)
Other mistake: When Gino gets shot and killed, the gun that shoots him isn't being held at quite the right angle... the way it's aimed, the bullet should have gone to the right of him, but instead he reacts as though he's been hit in the head. (Given it's a super low budget movie, they probably just didn't have enough time or money for a second take).
Other mistake: When Martin and his younger sons attack the soldiers Gabriel sent to their camp, the body count totals 20. That includes the private who gets up and tries to run that Martin hacks to death. Later when Tavington is questioning the wounded private the Cherokee scouts brought in, he indicates he was in the fight. But Tavington states 20 soldiers were killed and the ambush shows 20 being killed. Where did the private come from?
Suggested correction: There are 21 soldiers in the group. Samuel kills one with a rifle. Nathan kills six with a rifle. Benjamin kills four with his rifles, one with a pistol, six with his knife and tomahawk, two with redcoat rifles, and shoots the injured man into the stream.
Other mistake: The timing was way off from the couple visiting from midnight Mississippi, to the actual kidnapping, and she said they had visited last week.
Other mistake: When Proximo says "Use this" to Maximus and throws him a piece of body armor, it is not the same armor he uses in the scenes that follow. (01:10:00 - 01:12:55)
Other mistake: Either there was or wasn't a 5-year contract from the onset. At first, Sherwood told Bob, "It's just a pilot episode. If we get picked up for a series." Narrator Barry Williams said his agent called to tell him "the network picked up the Brady Bunch for a full season." Season One ended but Sherwood didn't call "until the last minute" to tell the cast they "would be coming back to a second season." Later, Sherwood told Bob that he knew when he did the pilot that he signed a 5-year contract. (00:05:50 - 00:21:40)
Suggested correction: Those two things are not mutually exclusive and that's not how it works in the television industry. Actors usually have to sign a test option agreement with the studio prior to the pilot being picked up (sometimes even before auditioning). This ensures the studio that the actor is committed to the project long term should the pilot be picked up, but signing the contract agreement doesn't guarantee the pilot will be picked up. A 5-year test option agreement seems pretty standard.
I'm aware of such contracts - and surely Florence Henderson would have also been required to sign a five-year agreement, but there (conveniently) was no mention of this.