Crossroads - S1-E5
Revealing mistake: When Easy is paddling across the river to aid the British soldiers, there is a shot where the person closest to the camera (Bull Randleman) appears to be rowing, but there is nothing in his hands.
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.
The Vision - S4-E12
Revealing mistake: Two oarsmen (or rowers) in Ragnar's boat, the first in front of us and the second from the back, pretend to have an oar but have none. (00:38:35)
Revealing mistake: Kevin McKidd's Scottish accent appears every now and then. For example in this episode, when he says that Marc Antony "negotiates with a whore and a dwarf at his side".
Revealing mistake: When Queen Elizabeth arrives in disguise, Blackadder welcomes her and is about to open the door to the closet, but you can see the door is being pushed up from the inside, probably by a crew member. (00:16:50)
Revealing mistake: When the coward is being branded using a red hot poker, you can see that the metal 'C' hasn't been heated at all when it is brought next to his face. Compare it to when they tested it on a piece of wood beforehand. The poker is also covered in a really fake-looking red paint. (02:02:55)
Revealing mistake: On his way to be crowned, you can see the Pope's sneakers under his robe.
Revealing mistake: In episode 2, when Kunta Kinte is on the slave ship 'Lord Ligonier', the slaves are trying to take over. During the fight, one of them is going up to a white man and if you look up in the sky you can see a trail from an airplane.
Revealing mistake: After Mr. Haengrang and Ms. Haman are shot by the Japanese soldiers, there are visible blood stains on their clothing from the wounds they would have sustained. But there are no bullet holes shown on the blooded part of their clothing, which is where the bullets would have hit. (01:17:49)
Revealing mistake: Near the end of the battle at the end of the episode, we see some Japanese troops coming out from the jungle. The Marines then shoot a machine gun, killing them. But pay attention to the ammo belt. All the bullets are blanks. (00:38:50)
Revealing mistake: The set where Augustus visits Agrippa on Lesbos for reconciliation is the same set where Augustus already was before - he was there earlier, reading the news of Marcellus' death while he was away from Rome to visit the Eastern provinces. But as stated, he had not visited Lesbos at all, because he and Agrippa had temporarily fallen out. (00:39:30 - 00:41:30)
The Thanksgiving Story - S2-E10
Revealing mistake: The close ups of Daniel and Jericho on the wagon show a pale blue background but the long shots show them on a heavily wooded trail crowded with large green trees behind them.
Revealing mistake: After Lentius stabs Silva, the knife blade Lentius used bends and wobbles as it is thrown to the ground.