Other mistake: Hannah Montana and Kyle (Lucas Cruikshank) are recording voices for an animated cartoon. The studio door is left open.
Other mistake: In the scene where the Glee Club is discussing that Violet will win them the contest, Violet leaves as she is upset about Screech. Zack then comments about "No one having a voice like Violet's". If you look at Mr. Tuttle, he mouths the words that Zack says.
Other mistake: During the 3-nightmare sequences, there are 25 students, with all desks full. However, 1 desk should have been left open as Kevin appears in the dreams, meaning there should only be 24 students.
Did the Earth Move For You? - S2-E1
Other mistake: Viv and Phil are waiting in his office for the power to come back on after the earthquake, but you can see lights on in the building across the street. (00:16:30)
Misadventures in Babysitting - S1-E8
Other mistake: When Mr. McGuire is trying to get back into the house to check on how Lizzie is doing babysitting, the lock chain is on the door, so he grabs a saw to cut through it. He begins to saw it - however he forgot to take the yellow cover off of the metal blade. (00:18:40)
In Too Deep - S1-E23
Other mistake: When Miriam tells Zane she will give him the necklace for a kiss, she said "I will give it to you." But then when she throws the necklace in the water, she said "I didn't say I would give it to you."
Other mistake: June Lockhart is referred to verbally as 'The Honourable Judge McKay', but the end credits say 'Judge MacBride'.
Gopherville - S1-E1
Other mistake: In "Sock Safari", when Toopy finds a red thread, his left hand with his glove disappears instantly.
Real or Robots/Special Delivery - S1-E9
Other mistake: Before Tommy and Chuckie climb up back on Stu's bed position, Stu's hair is orange, just like Chuckie's.
The Retainer - S1-E2
Other mistake: The gas chamber is destroyed when the dogs pull a chain that's attached to its front support but it somehow collapses from behind. (00:19:07)
Requiem at Mission Springs - S5-E22
Other mistake: After Mark falls from a horse and is paralyzed, Doc Burrage recommends that Mark soak his legs in the Mission Springs mineral spring. Lucas, Mark and Lou drive a wagon to the site. At night they all complain about how cold it is and there is a steady sound of wind blowing but all the trees and bushes are motionless.
Art Class & Lost and Found - S3-E5
Other mistake: Ned paints a rather obscene painting and brings it up to his teacher. He had just painted the painting and his teacher gets angry at the school cutting the art budget, so Ned holds the painting against his chest. When he takes it off his chest, there is no paint on his chest and the painting had no chance to dry before he put it on his chest.
Other mistake: When the throne in episode 5 & 6 is first introduced it is a normal throne or chair; it doesn't move when merely touched. But once the ceremony starts and after it's finished, it's suddenly a swivel chair. The base is never shown of course. But a swivel chair made of solid rock...?
If I Had the Wings of a Bugaloo - S1-E5
Other mistake: Joy's feet are stuck in Benita's glue trap, but she steps backwards twice before Harmony and Courage pull her out.
Blue Wants to Play a Game - S1-E12
Other mistake: The jigsaw puzzle Steve and Blue help Shovel and Pail with has a picture of everyone playing musical chairs from the Mailbox's Birthday episode, but Steve suddenly isn't in the puzzle. He played musical chairs, so he should've been in the puzzle.
Other mistake: When Stacy sees Zoey's designed backpacks for the first time, she uses her camera to take pictures of them. In one shot, a close up of the camera display is shown and the message "CF card full" is on the display and yet the camera still makes "click" sounds as Stacy seems to take pictures. (00:10:22)
The Return of Hydro-Man: Part 1 - S5-E7
Other mistake: When Spider-Man catches up to Mary Jane and Hydro-Man at the foundry, he webs up Hydro-Man's left wrist. When the shot changes to Spider-Man landing, he is not holding onto the web-line. When the shot changes back to Hydro-Man, his arm his pulled with the web-line remaining taut, even though Spider-Man is not holding the web. If Hydro-Man was moving his arm on his own, then the web-line would be slack.
Other mistake: Near the beginning the dividing line in the bathroom has Henry on the right and Peter on the left but as you can see Henry would be on the left due to where his room is and where he would have to walk.
Episode #1.3 - S1-E3
Other mistake: After the Demon Headmaster has been drenched in goo on the TV show Eddy Hair ends the show and there is a shot of the children shouting his catchphrase, in this shot you can see Eddy's cameraman crouched on the floor at the bottom of the stairs looking injured and holding his arm. There's no explanation as to why. (00:20:49)
Other mistake: The Kramdens' lock on the door is just a slide bolt that is only operable from inside the apartment. It's impossible for them to lock the apartment door from outside. The Norton's on the other hand have a regular dead bolt lock.