Other mistake: The 'KISS' logo above Kiss's stage isn't actually held up by anything.
One If By Clam, Two If By Sea - S3-E4
Other mistake: After the hurricane passes, Peter acts like he's been impaled by a wooden plank. He pulls it out as if it was attached to his right side. However, the way the metal on the clasp was bent, the only way the wooden plank could've been positioned that way is if the metal was over his shoulder.
To Live and Die in Dixie - S3-E12
Other mistake: When Stewie is with his 'band' for the first time when he is tuning his guitar, the string he's tuning doesn't match the peg he's turning.
One If By Clam, Two If By Sea - S3-E4
Other mistake: When the cops burst into the house we see the action on a TV as shown by the Quahog News logo in bottom left. However on the TV in the living room the logo is missing. It should be there as well. (00:12:45)
A Very Special Family Guy Freakin' Christmas - S3-E16
Other mistake: When Peter runs over the manger with his car the camel flies towards the left out of shot, but when it falls on Peter it is falling straight down as if it was shot upward.
Stuck Together, Torn Apart - S3-E19
Other mistake: In the scene where Brian gets off the phone with the glue company, he says the bad news is that the substance to remove the glue takes two weeks to arrive, but the captions read seven days.
Other mistake: When Lois knocks out the karate master, if you look in the stands, behind Peter, there is a person without a nose.
Death Lives - S3-E6
Other mistake: When Peter is dumped into the sea, a ship appears on the right hand side of the screen. However, the ship just appears randomly, it doesn't sail in to the shot, one frame its open water and the next frame it's there. (00:10:20)
Other mistake: When Stewie asks if the sheep is being "baashful", the animation of the duck nearest the camera keeps repeating. Watch carefully and you will see 2 bits of grain moving backwards and forwards in a horizontal motion. (00:00:35)
Mr. Griffin Goes to Washington - S3-E3
Other mistake: In the cutaway to Mike Tyson during the baseball game, people in the crowd are missing their faces. (00:03:00)
The Thin White Line (1) - S3-E1
Other mistake: During the scene at the rehab clinic when Brian is jogging, Peter asks if he wants to go "mess with the pregnant teens across the lake." Brian says no because "Group therapy, two o'clock." However, the sky looks as if the sun is about to rise or just set. The time cannot be anywhere close to 2:00, neither AM nor PM.
