Continuity mistake: In the first shot of Peter and Francis at the baseball game, there is a girl in a green dress sitting behind them. In the next shot there is a guy in a cream shirt sitting behind them. (00:06:40)
A Very Special Family Guy Freakin' Christmas - S3-E16
Continuity mistake: When Joe is pretending to have broken his legs, Quagmire is holding Joe's wheelchair with both hands, but in the next shot, he is only holding it with one hand as he has a beer in the other hand. (00:05:45)
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)
The Thin White Line (1) - S3-E1
Continuity mistake: When Brian is giving his speech at the end, it shows two policemen. The one on the left has a brown drink and the one on the right has a yellow drink. But in the next shot, the one on the right has a yellow drink and the one on the left has a clear drink. (00:21:05)
I Never Met the Dead Man - S1-E2
Continuity mistake: When Lois is feeding Stewie broccoli at the beginning in one shot the plate disappears from his table, and then in the next shot it is there with a fork next to it. (00:01:35)
Ready, Willing, and Disabled - S3-E15
Continuity mistake: When Peter is convincing Joe to do something with his life, they are listening to the news and beer cans are everywhere. Then the news reporter says, "Better watch out for that skateboard." After he slips, look around the room: there are no beer cans anymore.
A Very Special Family Guy Freakin' Christmas - S3-E16
Continuity mistake: Brian gets the fur on his hands burned off by the kitchen fire, but when Lois goes crazy and goes into the living room, the rest follow her and the screen zooms out. When that happens Brian's fur is back on his hands.
A Very Special Family Guy Freakin' Christmas - S3-E16
Continuity mistake: When Stewie contemplates that there is a hidden camera in the Santa ornament, the size of the red bauble next to the Santa changes between shots. (00:05:10)
Continuity mistake: When we first see Carter and the Griffins at the Newport racetrack, Peter's hands are on his thighs, but in the next shot, he is holding a cigar in his mouth. (00:11:10)
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.
He's Too Sexy for His Fat - S2-E17
Continuity mistake: Stewie gets progressively fat throughout the entire episode, but in the last scene he is thin again.
Continuity mistake: Stewie takes the card from the predictor machine in his left hand but on close up it's in his right hand. (00:04:30)
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: Peter is playing poker with Lois's father, and he wins. Lois's dad wins. While he's bragging about his son-in-law, look at the table. All the chips and cards are gone.
I Never Met the Dead Man - S1-E2
Continuity mistake: When Stewie ties the weather control device to the chimney, the black jump-lead is on Stewie's left (HIS left, not our left) and the red one is on his right, but in the next shot, they have switched positions. (00:18:55)
The Kiss Seen Around the World - S3-E8
Continuity mistake: When Stewie has kidnapped that bully he holds a weapon in front of the bully's face. When Lois comes in he puts it down, but in a full shot of the room it has disappeared. (00:19:30)
Continuity mistake: When Peter is throwing the disks and then shooting them, you see the door is closed. In the next shot it is open and you can see the inside of the house. Then in the next shot, it is open again. (00:16:10)
Continuity mistake: When Meg is waiting for Lois outside the hooters, she has a watch on her wrist. When she is talking with Lois, it just disappears after a couple of shots and we don't see it again. (00:11:10)
Continuity mistake: When Brian says "You can't just ignore these years", the front cover of his magazine is different from how it was in previous shots. (00:14:55)
Continuity mistake: When Peter is improvising in the bank, the bag of money disappears in one shot. (00:17:30)