Continuity mistake: When Andrew and Ted are outside drinking beer, Andrew's beer bottle flips around in his hand between shots when he's sitting down.
Continuity mistake: "The Feverman": Before putting the chain around his neck, the doctor removes both his detachable collar and his black string tie. A few shots later, not only is the collar back, but he's now wearing a red ascot-style tie. Both collar and tie vanish again one shot later. (00:17:05)
Continuity mistake: As Dave is leaning over the edge of the air boat with Rose behind him, he pulls a chunk of metal out of the water and places it on the edge of the boat on his left side. When he gets up from his lying position moments later, the metal is gone. Moments later again, with an overhead shot of the boat, we see what appears to be that piece of metal positioned at what would have been his right side, not his left. This is also where we see him step over the seat (twice!) in subsequent camera angles. (00:30:00)
Containment - S1-E5
Continuity mistake: At the end of the episode, when the bad guy is preparing the syringe of small pox, he follows the usual method of tapping out any air in the tube - when he is shown injecting himself, a large air bubble is back in the syringe (which would probably kill him quicker than the smallpox).
Continuity mistake: When Randi is in her tent working on her thesis, the computer is on. When something hits the tent, she almost drops her computer which now has a black screen, indicating that it is off. When the werewolf rips through the tent, the computer is now back on.
End. Begin. All the Same. - S1-E1
Continuity mistake: When Rian and Mira are on the Spy glass, he understands she just invited him to Dreamfast. When she answers "Yes! I mean...if you wanted to?" his hair is suddenly all the way behind the sword's handle, when it wasn't in the shot before. (00:09:45)
Continuity mistake: Ruth Deaver is helping Alan Pangborn put on his tie. The camera is facing Ruth's back and we see Alan's face in the mirror. The camera then switches angles to face Alan's back and Ruth's face. Alan's collar which was popped straight up from the first angle is now perfectly down over his newly tied tie from the second angle. (00:24:55)
And They Were Enemies - S2-E10
Continuity mistake: The moment Madame Kali drops down dead, killed by werewolf Chandler, she's still wrinkled and old. Later on in that scene, though, when the monster runs off, her skin is all nice and smooth again. (00:19:10 - 00:20:05)
Chapter Two: The Dark Baptism - S1-E2
Continuity mistake: When Sabrina is about to sign the book with her blood, the drop of blood keeps changing where it's at. At first it hits a drawn line, then it's above the drawn line and is right below the last name. In the third shot, there is now a line space between it and the last name in the book. It continues to change depending on the camera angle.
Continuity mistake: When Josh has got out and they go looking for him, they find Aiden on a small bridge. From a distance he's got a very dark sweat stain on his shirt. In a closer shot it's faded to nearly nothing, and gets lighter/darker in different shots throughout the scene.
Continuity mistake: When Eden confronts Kinsey by the lockers, as the angle changes so does Kinsey's arm. In some shots, she has her arms crossed and the locker door is closed, in some shots she has one arm up, holding the (open) locker door.
Continuity mistake: A woman in a long tan coat passes opposite Chris twice as he pedals down the sidewalk.
The Two Faces, Part Two - S1-E7
Continuity mistake: The first time Peter is inside the memory with his mother, two ornamental flags can be seen hanging on a wall next to a light switch as they talk in the living room. One of these flags suddenly turns roughly 45° to the left without anyone touching it. (00:07:33)
The Wraith - S1-E5
Continuity mistake: Linda's hands are on her hips from the back view but her arms are crossed in the frontal view of her as she speaks to Vic's dad outside her house.
Continuity mistake: When Marshall first finds Trip's letter, he holds it from the left side. In the close-up, he's holding it from the right side. (00:02:10)
Continuity mistake: When Father Bryce explodes, and it's shown from multiple angles over and over, the way his head flies into the air is different in some of the shots. In some of the shots, it flies straight up several feet into the air, while in other shots, it only shoots about one foot into the air and also shoots forward slightly, revealing multiple different takes were edited together.
The Gloaming - S1-E6
Continuity mistake: When we first see the guy in the tunnel, he runs to the left in the first shot. The next time we see him, he runs to the right.
Continuity mistake: When we see Coraline in Mick's vision of when he was taking her dress off at a party, her tattoo is under one of her shoulders (I think it was her left one) but later on in the series we see Morgan/Coraline wipe off the make-up on where her tattoo is...on the opposite side.
Continuity mistake: Just before Olivia commits suicide by falling from the staircase balcony, we see her behind the railing. How does she suddenly get in front of the railing (which would need to happen in order for her to fall) just as the ghost of Poppy reaches for her? (00:52:15 - 00:53:00)