The Tooth Fairy's TATS 2000 - S4-E1
Other mistake: Cartman is excited because the "tooth fairy" left him two dollars in exchange for a tooth. When he holds up the two bills, they are identical. Both have the same serial number.
Cartman's Silly Hate Crime 2000 - S4-E2
Continuity mistake: In the scene where Cartman is crying for his mother, the tattoo on Romper Stomper's face disappears, then comes back in the next scene.
Cartman's Silly Hate Crime 2000 - S4-E2
Continuity mistake: In Mackey's office, Cartman goes from getting off his chair, then sitting back on the chair, then he appears back off the chair.
Cartman's Silly Hate Crime 2000 - S4-E2
Factual error: The news anchor calls Cartman a hate crime suspect, but he had already been convicted, that makes him a hate crime convict.
Cartman's Silly Hate Crime 2000 - S4-E2
Continuity mistake: At first the sled race is supposed to be on Saturday, but late in the show it is on announced as happening on Thursday.
Continuity mistake: When the boys are heading to see the quintuplets they approach a souvenir stand. In the wide shot all we can see are some CDs on the stand. In the close-up shot there are suddenly prize signs next to the CDs.
Continuity mistake: In the beginning when the boys come in to the living room, Kenny's brother and Stan's sister Shelley is standing next to him. When it cuts, as Stan's grandpa enters, they're gone.
Continuity mistake: There is a scene where the FBI show up to the North American Marlon Brando Look Alikes meeting by mistake. However, during a close up of the leader's (the geneticist's) face, you can see the bottom of the banner actually says "Man Boy Love", as in the other NAMBLA. (00:16:20)
Continuity mistake: When Kenny approaches his mum with a plunger, she asks, "What are you doing Kenny?" and she is wearing a "I'm with Stupid" t-shirt, but when Kenny tries to plunge her, the phrase "God Bless America" can be seen visible on her T-Shirt.
Audio problem: Just before Kenny explodes from eating all of Mr. Broflovski's antacid tablets, we hear Kyle, Stan and Cartman shout out Kenny's name. One problem - Cartman isn't in the room with them. He isn't even on their debate team. (00:10:35)
Continuity mistake: Pocket carries Pip's luggage away, but a few shots later the luggage suddenly reappears beside them.
A Very Crappy Christmas - S4-E17
Continuity mistake: When Kyle tells Mr. Hankey and his family about the $300 he got for the animated Christmas card, the olive stick in the wife's martini glass is facing to the right. When she says to Mr. Hankey "That's not the only thing we've got to get working again if you know what I mean", the olive stick in the martini glass is now facing to the left. The olive stick then returns to facing to the right for the remainder of the scene. (00:07:50)
A Very Crappy Christmas - S4-E17
Continuity mistake: Cartman is already on stage, but in a next shot he arrives and Stan and Kyle ask him what he's you doing there. (00:16:58)
A Very Crappy Christmas - S4-E17
Audio problem: The animated Christmas movie the boys are making is really "the Spirit of Christmas", the movie Trey Parker and Matt Stone made before South Park. The dialogue recorded by the boys is the same as in the original (with a few changes, but when the film is shown later it's the original speech from "The Spirit of Christmas". You can tell by the way the voices are done, and the tone of the voices.
Answer: He appears in at least 5 other episodes, but usually just as a background character. He can be seen at Cartman's party in "Immaginationland". He was also one of the kids trying out to replace Butters in the "Professor Chaos" episode.
Bishop73