Continuity mistake: When the boys meet Blanket for the first time, note the positions of Kyle and Stan's Big Wheels. After Blanket asks them if they will be his new friends, their Big Wheels have switched places. (00:01:01)
You Got F*cked in the Ass - S8-E4
Continuity mistake: The end of the show where the dance battle takes place, when Butters is tap dancing his left shoe comes off but when it goes back to him his right shoe is off.
The Passion of the Jew - S8-E3
Continuity mistake: When Kyle slides a $10 bill into the ticket booth, the $10 bill is shown lying left to right. After a couple of cuts to where the ticket taker is saying "But this is such an important film..." the $10 bill has changed positions. (00:03:00)
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.
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