Pilot: The Spirit of Christmas (Jesus vs. Santa) - S1-E1
Continuity mistake: When Santa Claus is spinning Jesus over him, Jesus' beard keeps appearing and disappearing.
Cartman Gets an Anal Probe - S1-E2
Continuity mistake: When Cartman is saying how the others are trying to scare him, you can see Kyle is not stood next to him. Camera cuts and now Kyle is there. (00:04:20)
Cartman Gets an Anal Probe - S1-E2
Continuity mistake: When the bus pulls up, a stop sign is visible on the bus. When Ike goes through the second bus window, the sign has gone. (00:05:10)
Cartman Gets an Anal Probe - S1-E2
Continuity mistake: On the bus, we see there is a shot of the bus with 4 kids visible on the left hand side. However, when Ms. Crabtree swerves, a 5th kid with black hair appears out of thin air. (00:06:50)
Cartman Gets an Anal Probe - S1-E2
Continuity mistake: In the classroom there is a poster of The Laughing Cavalier in the back wall in the class. In the last shot of that scene you can notice that the poster has disappeared and is replaced with an astronaut poster. (00:09:05)
Cartman Gets an Anal Probe - S1-E2
Continuity mistake: In the classroom scene where Kyle tries to be excused from class to find Ike, Cartman sets Pip on fire as he was sitting just behind him to the the left. However in the previous shots Pip had not been sitting there, some other kid was and wouldn't have had enough time between shots to move. (00:09:05)
Cartman Gets an Anal Probe - S1-E2
Continuity mistake: We see all the cows in a single line waiting for the train. When the camera changes they are all now in a herd. (00:09:30)
Cartman Gets an Anal Probe - S1-E2
Continuity mistake: When the boys are first seen in the cafeteria, Stan is in front of Cartman. When Kyle says, "Hey look, there's Wendy Testeburger." in the next shot, Stan is now behind Cartman. (00:10:05)
Cartman Gets an Anal Probe - S1-E2
Continuity mistake: The "School Food Is Good Food" poster in the cafeteria changes fonts between shots. (00:10:50)
Cartman Gets an Anal Probe - S1-E2
Continuity mistake: After Stan vomits from Wendy talking to him at school, the vomit disappears in a few shots. (00:10:55)
Cartman Gets an Anal Probe - S1-E2
Continuity mistake: The rock Kyle throws at the alien ship appears from nowhere. (00:14:00)
Cartman Gets an Anal Probe - S1-E2
Continuity mistake: When at Stark's pond, the vomit by Stan's feet disappears. (00:16:00)
Cartman Gets an Anal Probe - S1-E2
Continuity mistake: When Cartman accidentally sets Fluffy the Cat on fire, it jumps up into the air and knocks over a picture and it falls onto the floor. When Stan, Kyle, Cartman's mom and Wendy walk into the living room in the next shot, the picture has disappeared. (00:17:45)
Cartman Gets an Anal Probe - S1-E2
Continuity mistake: The stars keep changing position (especially the sparkly big one) when Cartman is tied to the tree. (00:18:05)
Cartman Gets an Anal Probe - S1-E2
Continuity mistake: Mr.Garrison's glasses change throughout shots, from a thin pair to a bold pair.
Continuity mistake: In the opening the boys get on the school bus. Stan is on the fifth row, Cartman is on the sixth row, Kyle is on the seventh row and Kenny is on the eighth row and there are another two rows behind them. But in the shot after Cartman says "Ample parking day and night! People shouting howdy neighbor!", Kenny is now on the back row. (00:00:10)
Continuity mistake: When Ned, Jimbo and Kenny are out on the fishing boat they have a rocket attached to a rack. After firing the rocket the rack still remains, but in the next shot when they head for shore the rack is gone.
Continuity mistake: When Mr. Garrison is carrying around his gun, it is not the wood finished gun with the wood colored hand grip that he bought, it was the other one that had the grey hand grip. (00:14:20)
Suggested correction: He says he will have it (wood finish) then it shows him walking through town. Plenty of time for him to change his mind again.
Perhaps, but later when Stan and Wendy interrupt him, his gun exhibits wood furniture again. Unless he purchased both, some error has been made here.
Continuity mistake: After Mr Garrison announces Kathie-Lee will be presenting an award for Cartman, you see the next scene in the Mayors office. There we can see cleary the curtains are red, then she looks out the window and looking in the office from outside, they are pink, but it goes in the office again and now they are back to red.