Corrected entry: At one point, Peter's father tells Lois "Maybe you won't go to Hell after all. Maybe you'll just be sent to Purgatory with all the unbaptized babies." Catholics believe that unbaptized babies are sent to Limbo, not Purgatory, and a fanatically devout Catholic like Mr. Griffin would know that.
Corrected entry: When Peter has the fight with the chicken in the part where they are on the overpass and the chicken lands on the truck then, the truck is driving away from the overpass but Peter doesn't move in the next shot it shows Peter on the same overpass but the truck the chicken was riding on again drives under the same overpass Peter is on with the chicken on the same truck.
Corrected entry: In the scene where Peter and the delegates of the UN are in the meeting room, when everyone laughs at Peter, you can see that some of the country names on the labels are spelled wrong. For example, there is "Danmark", "Maxico", and "Morrocco". Also, it looks like three of the seats are not filled. Why would there not be any UN delegates at the meeting?
Corrected entry: Peter invites all the neighbors to his house, supposedly for tea. During the meeting, Peter excuses himself to ransack the other homes for the trophy. After the meeting, Peter, Lois and Chris are shown walking back to their own house, which was also ransacked.
Corrected entry: When Peter gets kicked out of the beer factory, he comes home drunk to find Meg chained to a huge weight so she can't get away from the piano which Lois is forcing her to play. When Peter sits down and starts playing, Lois realizes how good he is and she tells Meg she's off the hook and to go try the Clarinet. Yet Meg gets up and runs away. What happens to the chain and the weight? If Meg could run this fast when she was tied up, why didn't she just try before?
Corrected entry: Right after the Y2k takes effect and it shows the family (assumed to be only a little while later), Peter comments on how he was the third Hardy Boy. When Lois corrects him by saying that there were only two Hardy Boys, Peter says "Just like there was no apocalypse? HE SHOOTS HE SCORES." and slams into Lois with his stomach, causing her to fall down. When the shot changes, Louis is suddenly back on her feet. The transition between the two was less than a second - not nearly enough time for her to get back up.
Corrected entry: When Peter says "It must be better living in England, the worst they have there is drive-by-arguments." It goes to a 'flashback', and in the flashback, when the car stops, it's on the right side of the road. In England, cars drive on the left side of the road.