Revealing mistake: When "Selden" falls down the stairs it is obvious that it's a stunt double.
Continuity mistake: The jeep driver is standing behind Lt. Decker's aircraft during the initial conversation between Decker and Maj Wilson. His hands are behind the fuselage in the initial shot. When the shot changes to a close up of Decker, the driver's hands are now on top of the fuselage.
The Odyssey of Flight 33 - S2-E18
Other mistake: One of the crew members looks at the air speed indicator and states they are going over 2100 miles per hour. Why would a subsonic plane have an indicator that reads to 2100 mph?
Character mistake: The "frozen" woman on the stairs during the welcome mayor scene repeatedly blinks her eyes.
Continuity mistake: When Joe goes to punch the TV screen, it shows moving lines and static. But in the shot where his fist goes through the screen, it's easy to see that the screen has been replaced with one on which wavy lines have simply been painted, and then backlit. The lines are still visible on the shards of glass after the screen is broken.
Living Doll - S5-E6
Visible crew/equipment: When Talky Tina calls Erich, the camera zooms in as Erich starts talking - and its shadow appears on his arm.
Continuity mistake: As Ilse walks toward the front of the classroom, she passes the kids in the last row and is even with the kids in the next-to-last row, but in the following shot, shown from her point of view, she's passing the kids in the last row again. (00:30:45)
Continuity mistake: When the contractor forces his way into Wanda's apartment, she faints, her head landing in the center of the bare floor. But in the following shot, as the contractor leans over her, Wanda's head is at the edge of a large throw rug. (00:15:30)
The Jungle - S3-E12
Revealing mistake: The "mannequin" dressed as a warrior in the costume shop window is a live actor; watch closely and you can see his eyes widen ever so slightly. (00:14:55)
Visible crew/equipment: Right after the phone conversation, everybody starts going towards the door. As they do, if you look at the couch on left you can very briefly see a shadow of something moving across it. It couldn't be any of the actors since they were all either outside or on the other side of couch.
I Shot an Arrow into the Air - S1-E15
Revealing mistake: Right after their friend dies and the commander talks about going into the mountains to search for any life signs, you can very briefly see Corry looking straight into the camera.
Revealing mistake: When Lanser drops the cup, you can quite see that he is drinking from an empty cup, since the steward never poured him any and yet he manages to get some of it on his suit.
Continuity mistake: When Helen pushes Seldon to his death, his body was facing to the right, but in next shot he is facing to the left.
A Nice Place to Visit - S1-E28
Revealing mistake: When Rocky evicts three women from the room and slams the door behind them, you can quite clearly see the entire wall shaking.
And When the Sky Was Opened - S1-E11
Revealing mistake: After his flashbacks in his hospital room, Forbes looks at himself in The Mirror and he cannot see his reflection. But you can still see his arm in mirror.
Nervous Man in a Four Dollar Room - S2-E3
Continuity mistake: Just before George leaves the room after talking to Jackie, his position suddenly changes from in front of Jackie to behind him.
Continuity mistake: In the early scene when Bevis tumbles down the stairs of his apartment, a little boy watches and then holds his hands over his eyes. In the next shot, the boy is shown walking outside, but then the camera cuts and he is shown back inside, his hands still over his eyes.
Revealing mistake: In scene just after Rod Serling's opening narration, you can quite see that scene is being played in reverse because smoke is coming downwards back into the man's cigarette.
A Nice Place to Visit - S1-E28
Revealing mistake: After Valentine finds out he isn't in Heaven, he tries frantically to open the door. As he does, you can see the whole wall and door frame moving along with the door, showing that it's fake.
Continuity mistake: When Mr. Bevis starts his car, a girl with shoulder-length hair runs over with other children to help push it. In the first shot she's at the rear bumper but in the following shot she's beside the passenger door and there are different kids at the rear bumper. (00:03:25)