Continuity mistake: Episode 1-10, "All About Steve": The boys are sitting at a table with a Star Trek poster on the wall. Stan walks in and the poster is gone. In a later shot it is back. (00:04:30)
jairodrigueIt's Good to Be the Queen - S1-E20
Continuity mistake: At the hotel, the dish with the strawberries is sitting alone on the round table. When Stan knocks it off, the table is now empty, but in the next shot, there's a phone and glass on the round table.
Bishop73
Roger Codger - S1-E6
Continuity mistake: When Francine is telling the kids heaven isn't real the brown chair normally seen isn't there. But in the close up shot of her, the top of the brown chair can be seen behind her. It's gone in the next shot though.
Bishop73Other mistake: It appears as if Steve is holding 3 $20 bills when he supposedly received $50.

Continuity mistake: When Hayley closes the van door, Stan and the animals suddenly get a lot closer to the van. (00:08:40)
Casual PersonContinuity mistake: When the avalanche happens the second time, all of the animals have snow on their backs. In the shot of all three of the animals, the snow has disappeared. (00:07:30)
Casual PersonRevealing mistake: While Hayley is throwing up into the bin, you can hear the sound of it going into the bin. However, you can see nothing is actually going into the bin while she is doing it.
Lummie
Revealing mistake: When Stan is at the launderette, a man is shown writing on paper. There is no ink shown on the paper. He's also only writing on one single line and not moving down after finishing the line. (00:01:10)
Casual PersonContinuity mistake: In the scene where Francine says she used to be friends with everyone in the block, there is a cutaway of a previous neighbor couple called the McLearys. After the cutaway, keep an eye on Francine's coffee mug. The mug keeps changing position on the table between shots. (00:02:10)
Casual PersonContinuity mistake: At the convention when we first see Roger and Hayley, they pass a booth that says Costume contest registration. There is also a few people around, a poster and a movable wall. The very next shot is more of a close up of the two and the background has changed dramatically. There is now about 4-5 different stalls behind them and no sign of the previous one or the poster and wall.
Lummie
Revealing mistake: When Stan comes home and starts talking to Francine, as Francine is saying "You're just having a mid-life crisis", there are three objects in the background that are cut in half and seem to be floating in the air. (00:02:10)
Casual Person
Continuity mistake: When Francine is placing a breakfast plate on the table, the arrow on the fridge's temperature dial is in the middle of the yellow. 2 shots later shows the dial on the edge of the blue and the yellow without ever being touched. (00:00:50)
Casual Person
Continuity mistake: In the pilot episode, during the breakfast scene, there are five donuts in the box in front of Roger before his chair breaks. When he takes one from the box, there are eight. When Francine takes his donut away, there are five in the box again. (00:03:20 - 00:03:50)
Captain Defenestrator

Roger Codger - S1-E6
Continuity mistake: During Francine and Hayley's conversation with Father Donovan, Donovan's phone is directly in front of him. But when Francine says "Roger was good", the phone has magically moved closer to the golf clubs. (00:08:50 - 00:09:30)
Casual Person
Roger Codger - S1-E6
Continuity mistake: Steve, Hayley and Francine all stand next to the door when Bullock arrives. They are all standing right next to the door in the shot where Stan adjusts their clothes. But they have magically moved a foot away from the door in the following shot where Stan opens the door. (00:03:45)
Casual Person
Roger Codger - S1-E6
Continuity mistake: Roger oozes gunge on the couch. Some of the gunge goes on the blanket on top of the couch. But when Stan flips the couch cushion, the gunge from the blanket has magically disappeared. (00:03:25)
Casual PersonRoger Codger - S1-E6
Continuity mistake: Just as Bullock rings the doorbell, Roger oozes gunge from the left side and right side of his torso. The gunge from the right side goes on the couch and the left side goes off screen in a direction towards the door. Yet when Stan answers the door, no gunge is visible on the floor anywhere. (00:03:25)
Casual PersonContinuity mistake: The way the glass is shattered keeps changing between shots when Bullock jumps out of the diner window. (00:19:35)
Casual PersonContinuity mistake: When Stan leaves the scout rangers, standing behind the door are Steve and Joey the scout. The next shots shows only Joey standing behind the door. (00:04:40)
Casual Person
Chosen answer: The Beat.
MasterOfAll