Factual error: The verse Octavia recites is from Virgilius' poem "the Aeneid". That poem was written at least a quarter of a decade after the death of Caesar.
Visible crew/equipment: At the mill, when John tells Buck that Willie Brimmer might be at the Montgomery cabin with Jim-Bob, in the next closeup of John we see a billowy trail of cigarette smoke at the bottom right corner of the screen, but the only people standing there are Elizabeth, John, and Buck, and none are smoking. Presumably, it was someone offscreen smoking too close to the camera (similar to a mistake in 1978's "Halloween"). (00:26:05)
Visible crew/equipment: When Martin is fighting the "puppy" at the door, you can see a crew member's hand pushing the doorknob open to portray the puppy is trying to get back into the room.
Revealing mistake: In the scene where the king and his entourage are walking through the crowd, someone in the crowd (right side) is wearing a watch on his left hand while applauding.
An Impossible Silence - S1-E11
Continuity mistake: When Catherine enters the precinct station, the desk sergeant places a small white file box on the counter. There's nothing else sitting next to this, but when the shot reverses, a tall black police radio with an antenna sticking up has appeared there. (00:16:10)
Continuity mistake: In one scene where Kris is talking to her mom, she grabs an apple, then takes a paper towel from the holder. Then, if you look behind her at the holder, it is empty. But in a wide shot, the paper towels are back again.
Continuity mistake: Brooke and Ridge have known each other for at least 3 years when Rick is born. Yet when Rick is 16 Brooke and Ridge talk about how it's been ten years since they met. Even given soap opera children's amazing ability to grow it's a huge mistake that they say they've only known each other ten years when it's at least nineteen.
Mainstream - S3-E3
Continuity mistake: When Kitty goes to get a midnight snack, her hair is down. But a few shots later, her hair is up in a ponytail.
Factual error: The communication delay for earth-moon communications is around 2.6 seconds. Yet Emma's daughter simply dials a cell phone and is connected to her Mom in space past the moon in less than that. The communication has no time lag. (00:18:45)
Visible crew/equipment: When Ned walks upstairs to check on the lady before the bad guy gets killed, behind him is a circular window. A reflecting light can be seen in the window along with what looks to be a boom microphone.
Factual error: When Dan goes into the machine for his MRI a light switches on just as his head enters the machine. MRIs have soft muted lights already in the machine (so technician can see the patient via cameras) they want you to rest and be calm to avoid claustrophobia, there are no bright lights. I have had 5 different MRIs in 4 different machines in 2 different states, all were the same. (00:02:00)
The Snap Out Of It Episode - S1-E7
Continuity mistake: In the scene where the "clown" is trying to get back into his closet to eat his soup while Marni and her boyfriend are fighting, the closet door is open. Then when he starts to go back to get a spoon and changes his mind the "clown" turns around and opens the door, even though it was already open.
Factual error: When they first assault the city, the Greeks construct catapults. Only problem: catapults were invented at 400 - 300 BC, i.e. about 800 years later; and the first models looked similar to giant crossbows. The one-armed onager and similar types (as seen here) were a later Roman invention.
Character mistake: The firefighters state that the acronym for CPR is ABC for Airway, Breathing, Circulation. This is very outdated as in 2010 the American Heart Association changed the recommendation to CAB for Compressions, Airway, Breathing following evidence that compressions first in CPR saves more lives.
Continuity mistake: Tara is sitting at her desk and tells Max they will have sex the following night, and she teases him that she "Might even bring some props." Right as she says this line, the camera cuts. In the first shot, she has one pencil in each hand, but in the second shot, suddenly both pencils are in her left hand. The position of her hands changes between cuts as well.
Episode #1.1 - S1-E1
Factual error: The American flag shown waving outside the White House is the current present-day flag with 50 stars. From 1896 to 1908, (the time period that this show is set in) the US flag only had 45 stars as Oklahoma, New Mexico, Nebraska, Alaska and Hawaii were not recognised as states in that time period. The flag did not have 50 stars until 1960. (00:04:30)
Visible crew/equipment: When Kathryn tells John that staring at his phone won't make it ring, in the next shot facing John the boom mic can be seen in front of him, bobbing around at the top of the screen. (00:02:55)
Revealing mistake: When Copper is talking to Sam in the lobby, Cooper pulls out his phone to cancel his lunch date with Charlotte for that same day and his phone is time stamped as 7:35pm. (00:16:25)
Continuity mistake: In the 1991 flashback, Jamie is already engaged to Paul and is shown with long hair. However, in the 'Cold Feet' episode, Jamie is shown with short hair. Since the 'Cold Feet' episode was set in February of '91 and the flashback from this episode was set in late March or April of '91, these two episodes don't match up.
Kreplach and a Tiny Tush - S3-E7
Revealing mistake: When Gill called Kristy she picked up, but if you look at her phone someone is still calling. (00:02:20)