Revealing mistake: When Brian says "Our tickets were in the bags", half of his left hand is missing for a frame.
Continuity mistake: When Connie and her friends walk up to Peter (as Lando) graffitying, the black guy changes position between shots. (00:09:55)
Continuity mistake: Just after Meg is payed out for never having done 'toad', she changes position between shots. (00:12:15)
Continuity mistake: After Peter laughs about Charles Dickens, he changes position between shots. (00:15:25)
Other mistake: When Peter is dancing to his musical number on top of the table, his head continually shrinks until the end of the shot, where his head is around a third of what it was originally.
Continuity mistake: In the scene where Peter and Lois are "getting dressed", the candles in the background switch from having candle holders to not having candle holders.
Continuity mistake: When Lois goes to the bedroom, she opens the door and trips the wire across the door. The wire is strung across the bottom of the door but when she turns the light on, it has disappeared.
Other mistake: After Brian says Chris is tweaked and Chris says maybe the toad is Meg's, the bubbles in the aquarium stop moving.
Continuity mistake: When Stewie is in his room talking to Rupert and himself out loud about Janet we see that Rupert is on the left side of Stewie's pillow. When the camera pans over to Brian who overhears Stewie's musings, after Brian makes fun of Stewie the camera pans back and Rupert is gone. There is also a quick tete-a-tete on the color of Janet's eyes and the final shot is on Stewie and his crib and yet no Rupert to be found. (00:07:20)
Continuity mistake: When Stewie is building with blocks, you first see a pyramid with three blocks on the bottom and two on the top. The shot changes, and he puts two more on the top, near the edge. When the shot changes again, suddenly there are five blocks on the bottom, six on the second layer, and two on the top near the middle. The letters and pictures are also all different. (00:09:50)
There's Something About Paulie - S2-E16
Continuity mistake: A mob member at Cleveland's deli offers to help Peter get a new car by stealing the used junker he bought and have insurance get him a new one. The new blue car he receives appears to resemble a Volkswagen Beetle when it first appears, but in the second shot the car's body is more Mercedes-like. (00:05:17)
There's Something About Paulie - S2-E16
Continuity mistake: In the scene where Peter is outside the cinema waiting for Big Fat Paulie, he has a tie on, however when he is in the cinema walking up the aisle, it's gone. When he gets out again, he has it on. (00:07:40 - 00:08:50)
There's Something About Paulie - S2-E16
Continuity mistake: Just before Paulie moons the sky, he and Peter change position between shots. (00:11:00)
There's Something About Paulie - S2-E16
Continuity mistake: When Meg is first seen performing 'Death of a Salesman' she changes position between shots. (00:12:35)
There's Something About Paulie - S2-E16
Plot hole: If the groom didn't know who Lois was but had a picture of her, how could he have known that she was at the wedding so he could place the bomb in the blue sedan? If he had put the bomb in their car while they were still at home, they both would have been blown up. So this means he placed the bomb in the car at the wedding. He didn't know however that Lois was there until the end, where he caught up with them and told them not to start the car. Had he known earlier, he wouldn't have been arguing with his bride about the hit occurring during their honeymoon. (00:20:05 - 00:21:35)
There's Something About Paulie - S2-E16
Continuity mistake: As the mobster is telling Peter and Lois not to start their car, he changes position in relation to them. (00:21:30)
There's Something About Paulie - S2-E16
Continuity mistake: When Lois asks to speak to Peter in the other room after sitting down for supper with Paulie, the door they come out of is where the front door is all the time, not the kitchen.
There's Something About Paulie - S2-E16
Continuity mistake: In the scene where Peter is showing Cleveland his new car, the first shot shows a car that resembles a VW Beetle. In the next shot the car resembles a Mercedes CLK.
There's Something About Paulie - S2-E16
Continuity mistake: When Paulie is eating dinner with Peter, his pile of mashed potatoes keeps changing from white to green.
He's Too Sexy for His Fat - S2-E17
Continuity mistake: In the scene where Stewie is eating chocolate cake, he shoves his head in it and covers himself in cake. However when Peter walks in after having liposuction, all the cake has disappeared and Stewie is now completely clean. The bowl of grapes on the table is also gone. (00:11:40)
Answer: Lacey Chabert was the actress who originally voiced Meg in early episodes. She left of her own accord due to being in school and other acting work; Seth MacFarlane has stated there was no tension with her leaving, but it makes for a handy joke for the show.
Jon Sandys ★