Continuity mistake: When the lab equipment shorts out after the earthquake, the unconscious Major Brothers is lying with his head propped up against the wall. But when Hamilton reaches him in the next shot, he's suddenly lying flat and is nowhere near the wall. (00:21:45)
Continuity mistake: In the lab, the alien's arms change positions instantaneously between shots. (00:13:50)
Continuity mistake: In the scene after the second crash, when the pilot and his wife "borrow" the jeep to return to the base, the shot is flipped, reversing the positions of the husband and wife in a mirror image of the real vehicle, placing the "driver" in the passenger position and the spare tire, which should be on the near side, is now on the far side. In the next shot, as the vehicle nears the base, everything suddenly resumes the correct perspective.
Behold, Eck! - S2-E3
Continuity mistake: When Dr. Stone's assistant helps him up from the floor, there's a lopsided, circular diagram drawn on the chalkboard behind them. One shot later, the diagram has changed into a perfectly round circle and has moved itself several inches higher on the board. (00:06:10)
Revealing mistake: In the bakery, Will plays a lively tune on the concertina - without touching any of the button-keys necessary to play the notes. (00:26:15)
Continuity mistake: The cloth pillows stabilizing the moonstone on the lab counter change positions several times between takes. (00:40:15)
Continuity mistake: Dr. Brice's name tag is partially tucked under her collar when she's inside the lab. When she walks into the corridor, the tag has shifted position and is outside the collar. Later, back in the lab, the tag keeps changing from over to under her collar repeatedly. (00:32:50 - 00:36:50)
Visible crew/equipment: As the energy being moves down the city sidewalk, we see its shadow on the concrete. Right beside that, however, we can also see the distinctly-shaped shadow of the camera. (00:35:00)
It Crawled Out of the Woodwork - S1-E11
Factual error: When the energy monster kills his entire research staff by stopping their hearts, Dr. Block brings them all back to life (with their minds and personalities intact) by installing pacemakers. But when the heart stops functioning, brain death occurs within minutes. For this to work, he'd not only have to operate on several people simultaneously, he'd also have to be the fastest heart surgeon on Earth. (00:40:00)
It Crawled Out of the Woodwork - S1-E11
Continuity mistake: When Joey turns off the bathtub tap, we can see that the water is no longer flowing. But the sound of running water continues. And a few shots later, the water is flowing once more, even though Joey hasn't gone near the tub again. (00:24:30)
Don't Open Till Doomsday - S1-E17
Continuity mistake: Harvey peeks into the small hole in the box using his right eye. On the first view from inside the box, a right eye is indeed looking in. But when the monster appears, a left eye is peering through the hole. The shot cuts immediately back to Harvey, who still has his right eye pressed to the opening. (00:06:10)
The Man Who Was Never Born - S1-E6
Visible crew/equipment: As the ship lands in the beginning, the wire supporting the model is visible at the top of the screen. (00:04:15)
The Architects of Fear - S1-E3
Visible crew/equipment: When Stanley levitates the meteor with his brain power, the wires that actually lift the rock are very easy to spot at the top of the screen. (00:09:30)
Continuity mistake: The alien's torn spacesuit sleeve somehow mends itself, but then is torn again a few shots later. (00:46:00 - 00:47:50)
Continuity mistake: General Stocker falls into a lunar quicksand pit and starts to sink. One arm disappears beneath the sand, but in the next shot, both his arms are outstretched and waving for help. (00:04:25)
The Architects of Fear - S1-E3
Revealing mistake: In this episode's present-day 1963, the scientists view film footage said to have been taken "yesterday." But the rather obvious crowd scene stock footage is ten years old, featuring cars and clothing no newer than 1953. (00:02:00)
Continuity mistake: The window in the chamber door changes its size between shots. At first, we can see just Gwyllm's head. But then the window somehow grows so that his head and shoulders are visible. When the window gets smaller again, only part of his head is visible. (00:46:00)
Cold Hands, Warm Heart - S2-E2
Visible crew/equipment: Barton is terrified by a plant-like alien floating outside his spaceship window. The Venusian critter might be a heck of a lot scarier if it bore less resemblance to a furry stalk of celery - and if only its puppet strings weren't showing. (00:25:45)
Factual error: The General brandishes a six-shooter pistol with an enormous silencer attached to it. He's a career military guy who should definitely know better, so he gets a failing grade in Basic Weaponry 101. Silencers don't work on revolvers. (00:34:50)
Controlled Experiment - S1-E16
Continuity mistake: When Phobos sets up the time converter, the grid on his large round scope has a diamond-shaped pattern. But when we see it from his point of view, the grid comprises perfect squares instead, and contains numbers that weren't there before. (00:15:00)
