Continuity mistake: In Season 2 Episode 22, Model Behavior, Woody has gotten his braces off. However, in this episode, he has braces back on again.
Continuity mistake: All the castle windows on the outside of the castle are small squares yet from inside the rooms they're arched.
The Scorn of the Star Sapphire! - S3-E5
Continuity mistake: Tattooed Man leaves the bank with two bags of money. He is shown standing on a concrete titled surface like a decorative sidewalk. He turns when he hears some police cars approaching. The shot cuts to a view of the police cars from between Tattooed Man's legs, and suddenly he is standing in the middle of the street on asphalt. (00:05:50)
Six-Can Solution/Silence of the Sheep - S4-E21
Continuity mistake: In "The Six Can Solution" Odie steals 6 cans, then when he gets to the girl's house there are 12 cans in his red wagon when the camera zeros in on Squeak. (00:10:10 - 00:11:30)