Petergeist - S4-E26
Continuity mistake: The filing cabinet that was beside the TV moves to the corner beside the desk.
Continuity mistake: When Lois is handing out everyone's lines for the play, Meg doesn't have glasses on. Split second later they appear. (00:09:47)
Continuity mistake: When Lois opens the door to Peters mum, Peter appears at the door and Lois simply vanishes. (00:05:00)
Continuity mistake: When Lois is talking to Brian about having homicidal thoughts, the rug colours swap order. (00:14:20)
Continuity mistake: At the start, Chris' hat is all yellow instead of yellow and black. (00:00:30)
Jungle Love - S4-E13
Other mistake: In the kitchen when Peter is playing with the paddle ball and then Brian confesses to giving Chris the idea about joining the Peace Corp, there is a picture frame on the wall behind Peter. In this is various pictures of the family including Brian. In this, Brian is as a yellow dog despite being white in the series, and even in the scene depicted.
Brian Writes a Bestseller - S9-E6
Continuity mistake: When Stewie answers the door, notice the doorknob. It's down further in just this scene, so he can answer it. The rest of the episode it's where it's supposed to be.
Baby, You Knock Me Out - S9-E5
Factual error: Peter gets a record a message card from Cleveland. He hears a conversation, hears him driving and get pulled over by a cop. Impossible since the card stops recording as soon as you close it.
Other mistake: After Brian says Chris is tweaked and Chris says maybe the toad is Meg's, the bubbles in the aquarium stop moving.
Other mistake: In the flashback to Brian and Peter playing checkers, Brian's piece is not on the back row when he says "king me."
Brian's Got a Brand New Bag - S8-E4
Continuity mistake: Towards the end of the episode, Brian walks in with Rita's soup. Notice there are no pill bottles on her nightstand. As soon as he sits the soup down, 3 bottles appear out of nowhere. Then, after Brian gives her the pills, the bottles disappear again. (00:03:02 - 00:03:28)
'Family Guy' Through the Years - S16-E16
Factual error: In the scene at the Disco, Peter and Quagmire both transpose "Viet Cong" but with "Donkey Kong." However, the segment is supposed to be taking place in 1973, meanwhile "Donkey Kong" wasn't released until 1981.
Other mistake: Joe salutes Quagmire's Dad. His legs are paralyzed, yet he uses them to push himself backward in his wheelchair.
Screams of Silence: The Story of Brenda Q - S10-E3
Other mistake: This episode is the only one in the entire series where there's a peephole in the door.
The New Adventures of Old Tom - S14-E18
Continuity mistake: Peter goes to the roof where Tom is debating jumping. He has orange fingers because he ate a Doritos taco. He licks two fingers but next shot shows them all clean.
Factual error: As soon as Lois and Peter board the ship it starts moving. This does not happen in reality.
Continuity mistake: In the Clam when Brian says about he knows what's going on, Quagmire disappears from behind his drink on the table. (00:10:00)
Valentine's Day in Quahog - S11-E12
Continuity mistake: Just as Meg's date is about to leave the motel, the level of ice in the bath changes. Note its position in relation to Meg's Scar. (00:08:30)
Chosen answer: It's a real song called "Elvira". Originally by Dallas Fraizer in '66, however, this version seems to be the Oak Ridge Boys cover version. However, the mega lesbians skip the verse and just sing the chorus after the opening line.
Bishop73