Continuity mistake: As Saddam starts his "I can change" song, his suitcase disappears from Satan's bed. [If you look closely at the second picture, you can see the top of the suitcase, behind the striped bedcovers. It hasn't disappeared, but has moved (which is still a mistake)] (00:52:30)
Continuity mistake: The whole time we see The Mole, he has nothing on his arms. His watch only appears when he wants to synchronise watches with the boys. (00:53:25 - 00:59:00)
Continuity mistake: When Terrance and Phillip are strapped in their chairs, the helmets on the chairs first appear in a closeup and aren't there in a previous wideshot. (00:55:00)
Continuity mistake: When Terrance and Phillip are strapped in the electric chairs, they talk, and no-one is behind them. In the next wide shot though, a group of woman are surrounding the chairs. (00:55:10)
Continuity mistake: When the children and Christophe are on the hill near the military base, Christophe looks at his watch. It is a digital one then, but it's not when he says "Let's synchronize watches" a little bit later. (00:56:50 - 00:59:00)
Continuity mistake: When Terrence & Phillip are in the electric chairs, there are red curtains behind them. In between shots, it changes to an American flag, and then back to red curtains again. (00:57:30)
Continuity mistake: When Winona Rider first appears on stage, Phillip's "P" is missing from his shirt as she passes them. (00:57:50)
Continuity mistake: When Stan looks down his road at the start of the movie you can see the Post Office, and there's nothing across the road but trees and snow. Later on, when he's in Tom's Rhinoplastry you can see the Post Office across the street. (01:00:00)
Continuity mistake: When Mole digs out onto the stage, you can see Terrance and Phillip in their chairs, and the helmets they're wearing have a wire which is connected to the chair. Yet in a closeup of Mole talking to Terrance and Phillip, the wire goes straight up, and isn't connected to the chair. (01:01:05)
Continuity mistake: During the USO Show, Terrence is sitting in the left electric chair, and Phillip is sitting in the right electric chair. Just before they get electrocuted, they swap places, and then quickly swap back. (01:01:10)
Continuity mistake: When MAC realise what they have done, it shows a shot of the battlefield. When it shows them leaving to find their kids, everything on the battlefield has changed completely. Tanks have disappeared, planes have moved, etc. (01:06:05)
Continuity mistake: When Terrance and Phillip are standing alone, and the big group of soldiers run towards them, the General is standing in front of them and Shelia is standing in front of the General. Yet when it cuts to a closeup of the General talking, Shelia has disappeared. (01:07:05)
Continuity mistake: Operation "Human Shield" is supposed to "guard the tanks and planes too", and some of the black soldiers are tied to them. But once Chef jumps out of the way and says "Operation Human Shield my ass.." The others have miraculously been untied. (01:08:25)
Continuity mistake: After Stan joins back up with the rest of the kids, he finds Eric and Kyle on the battlefield as they are climbing out of the trench. In the first shot of Stan before he speaks, Wendy is clearly standing in front of Gregory on his right and Butters is visible in the second row behind Stan. In the next shot from the side, the kids shift so that they are standing further behind Stan than in the previous shot, Gregory is now standing in front of Wendy on her right and Butters has completely disappeared. In the third shot, a girl in a pink shirt, who was not visible before, is now directly behind Stan and Butters has reappeared. (01:09:37)
Continuity mistake: When Terrance and Phillip are about to get killed, They go to the left position. When Kyle says: "I'm not moving!", They both change to the right position. (01:10:05 - 01:10:28)
Continuity mistake: When Sheila kills Terrance and Phillip, Phillip falls to the ground twice. (01:11:10)
Continuity mistake: Sheila Broflovski shoots Philip in the middle of the "P", but when the blood starts flowing on the ground, the bullet hole is on the letter itself. (01:11:10)
Continuity mistake: Early in the film Satan is singing and has 4 fingers. When he asks Mr. Hat to join him in hell, he has 5. (01:11:20)
Continuity mistake: When Saddam says build a statue where Cartman is, Cartman, Stan and Kyle are standing next to each other. Cartman then calls Saddam a butt-f*cker and the V chip makes Cartman electrocute one of Satan's bats. After Cartman realizes he can electrocute Saddam, Kyle says "Yeah, do it Cartman". But Kyle is now a foot away from Cartman. (01:12:10)
Continuity mistake: When Satan says "I guess I'm destined to live in hell, alone", there is nothing on the rock in front of him. A few seconds later, Mr. Hat appears. (01:14:15)
Chosen answer: They don't believe him, so they're making a sappy joke about him "still being here all around us."
Captain Defenestrator