Continuity mistake: Stan tries to sell a magazine subscription to the Hippies. His clipboard disappears instantly. (00:01:30)
Continuity mistake: When Randy is looking for Stan at the festival, there are two people in hats in front of him. Camera changes and the one hat has disappeared. (00:11:00)
Continuity mistake: The cake that the town offers to Cartman disappears instantly. (00:13:10)
Continuity mistake: The whiteboard in heaven disappears instantly. (00:06:05)
Mr. Garrison's Fancy New Vagina - S9-E1
Continuity mistake: When Kyle is telling his mum and dad about the surgery he wants, the picture he is holding disappears instantly. (00:10:00)
Continuity mistake: When Mr. Garrison is having the kids rehearse the play, Bebe is standing in front of Kenny. When they cut to a closer view she is no longer there but should still be visible. She returns in the next wide view.
Continuity mistake: When Cartman is in jail, and the group of adults comes with the cake, the cake has two stories to it. Later the cake is shown with only one layer.
Something Wall-Mart This Way Comes - S8-E9
Continuity mistake: When Wal-Mart is imploding at the end, a massive chunk of concrete falls by Randy and disappears instantly.
It's Christmas in Canada - S7-E15
Continuity mistake: Near the end of the episode before Cartman starts fighting Kyle, he throws his gloves in front of him. In the very next shot they are gone.
Continuity mistake: When Timmy and Jimmy are fighting (when Jimmy's kneeing Timmy in the groin), on the first hit, Timmy has the American flag on his right arm and a yellow circle on the other. On the second hit, the circle is now a yellow ring. On the the fifth hit, the right arm has the yellow ring on it, then he flips over and the American flag's on the other arm.
Continuity mistake: When Jimmy is talking about Christopher Reeve and Superman while the boys are on the ground playing with toy cars, Stan looks up at Jimmy and says 'Yeah that's nice guys. Were going to stay out of this one.' When the camera cuts to another angle, Stan's head is in a different position.
Continuity mistake: When Randy is giving his second speech in public about the economy, he has his one fist raised, then instantly it is by his side as he turns to walk off. (00:07:30)
Continuity mistake: When the agents are taking Gerald below the bridge to meet with Hillary Clinton, in the angle where Gerald says that he was set up and is not Skanthunt42, the agents grab hold of him and make their way under the bridge. As the shot ends, Gerald and the agents are about to go under the bridge, but in the next shot, they are suddenly further away from the area under the bridge. The shot cuts again and they are suddenly directly under the bridge.
With Apologies to Jesse Jackson - S11-E1
Continuity mistake: When Randy is walking down the street after leaving the comedy club, there are no lines on the pavement from the side shot, However when we see him front on, there is. Snow also appears. (00:09:20)
Continuity mistake: In the very beginning, Butters walks in after Cartman, Kyle and Stan talk about replacing him. Butters and Cartman sit down and talk. Firstly, pay attention to the 'Cow Day' banner behind Cartman. After the camera goes from Cartman talking to Butters then back to Cartman, a letter S is now on the banner. It now reads 'Cow Days.' During the same sequence, look behind Butters. You can see Peter Panda on what looks like a toy box. After a few cuts from Cartman to Butters, now all of a sudden, Clyde Frog is next to Peter Panda on the box.
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)
Insecurity - S16-E10
Continuity mistake: Cartman walks into his house and can't remember the code to turn off the alarm, so he gets a call from the security company. When the man on the phone introduces himself, the clock on the wall to the right of shot reads 2:02, then the time changes to 12:37, then back to 2:02 again.
Continuity mistake: The level of beer in people's glasses never changes. (00:11:35)
Mr. Garrison's Fancy New Vagina - S9-E1
Continuity mistake: In the doctor's office, Kyle's facial expression changes completely and instantly. (00:07:30)
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