Continuity mistake: When Francine is placing a breakfast plate on the table, the arrow on the fridge's temperature dial is pointed to the middle of the yellow. Two shots later, the arrow is pointed to edge of the blue and yellow. (00:00:50)
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)
Audio problem: Roger finds the Jack In The Box man. The Jack In The Box man starts screaming and then Roger screams and runs out the door. When this happens, the Jack In The Box man sounds like Roger and Roger sounds like Stan. (00:12:30)
Other 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)
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 suddenly disappears. (00:03:25)
Roger 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)
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 suddenly move a couple feet away from the door in the following shot where Stan opens the door. (00:03:45)
Roger Codger - S1-E6
Continuity mistake: During Francine and Hayley's conversation with Father Donovan, Donovan's phone is directly in front of him. When Francine says "Roger was good", the phone has suddenly moved closer to the golf clubs. (00:08:50 - 00:09:30)
Roger Codger - S1-E6
Continuity mistake: When the bus driver finds Roger, the Dignity Towers Retirement Home bus is only a few feet away from them. But in the shot where Roger says "How do I get home? How do I get home?", there was no sign of any bus for many many meters. As if the bus just appeared out of nowhere. (00:09:45)
Roger Codger - S1-E6
Continuity mistake: In the Area 51 flashback, the "RESTRICTED" sign on the lab door goes from red to blue between shots. (00:11:00)
Roger Codger - S1-E6
Continuity mistake: The amount/position of the grenades thrown into the Area 51 lab change between shots. (00:11:30)
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.
Continuity 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)
Continuity mistake: When Stan leaves the scout rangers, standing behind the door are Steve and Joey the scout. The next shot shows only Joey standing behind the door. (00:04:40)
Deacon Stan, Jesus Man - S1-E8
Continuity mistake: When Steve says "Thank you, Satan" to Karl Rove, his eyes are part closed, mainly open. In the following shot afterwards, his eyes are wide open. (00:08:20)
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)
Continuity mistake: The way the glass is shattered keeps changing between shots when Bullock jumps out of the diner window. (00:19:35)
Factual error: Steve and Roger make a prank phone call to Tony Blair at 4:30 AM GMT during sunset in Virginia (EST/EDT); because of the 5-hour time difference (4 hours during Daylight Savings), it would be 11:30 PM or 12:30 AM in Virginia, which would be nighttime.
Chosen answer: It is just the decision of the creators to do so.
MasterOfAll