Family Guy Viewer Mail #1 - S3-E21
Corrected entry: In the genie part, when Peter wishes he had no bones he is still talking, but if he wished for no bones he wouldn't have a skull to talk.
logan crewsMr. Griffin Goes to Washington - S3-E3
Corrected entry: There's a weird character between Chris and Meg at breakfast and a high chair without Stewie. In the next few cuts we see Stewie magically in his high chair. (00:10:20)
And Then There Were Fewer - S9-E1
Corrected entry: The next morning the police are already parked outside the building, even though the bridge over the river is not built yet. How did they get there?
Correction: In the morning (00:39:05) there is one police cruiser in front of the mansion at this point (and more arrive), then it cuts to a shot of the bridge being worked on. We see that structural support beams have already been built, as well as two planks lying across the top to support moving vehicles, which the police cruisers have done. Also, in the last overhead shot (00:48:30) as the credits begin to roll, all the guests' vehicles are driving over those two planks.
Super Grover
Corrected entry: During the opening theme when Lois and Peter are at the piano, when the series first started the pictures on the back wall are indecipherable but as the series progresses the pictures show Stewie, Meg and Chris's faces.
Tobin OReillyCorrection: This is because the series starts in 1999, when Family Guy is was just standard definition TV. The animators didn't bother to draw the pictures, as they're only a part of the background, and is not really that important, as the video quality is in SD. When the series began to look a lot more clearer (and closer to HD), the animators decided to draw the pictures a lot more clearer and recognizable.
Agreed. This is like comparing the Simpsons' opening from '92 to '18. As technology progresses so does animation.
Ssiscool Also, an animated series is typically not given much of a budget until it has proven itself to be a hit and thus worthy of a bigger budget from the network upon which it airs; this is also evident when you compare early episodes of other series such as South Park, American Dad, King Of The Hill, etc. to those from later seasons.
zendaddy621Precisely. A network isn't going to funnel money into something that could sink in the ratings. That's why many shows are contracted for a couple of episodes before a full season is commissioned.
Ssiscool Stewie, Chris & Brian's Excellent Adventure - S13-E7
Corrected entry: When the Titanic hits the iceberg you can see damage well above the waterline. As most people already know, the damage was well bellow the waterline which is why it sank. (00:15:30)
DrLoomis1978Correction: The phrase "tip of the iceberg" exists for a reason. Yes there's damage above the waterline too, but the critical damage was below it, that's just not shown onscreen.
Jon Sandys Corrected entry: In some episodes, the word 'fictitious' in the credits disclaimer at the end is spelled 'ficticious'.
BlibbetyblipCorrection: I saw the entire season 1 of Family Guy again and all the episodes, the word "fictitious" shown on the disclaimer in the credits is spelled correctly.
iGregoryThat's dedication. Not watching the episode, watching the credits.
Ssiscool Corrected entry: When Chris says goodbye when Lois and Peter are getting on the boat, the sea in the background 'jolts'. (00:02:20)
Correction: The sea never jolts, it just drifts normally, like any part of the sea would.
Casual PersonCorrected entry: During the chicken fight, one of the clones blows one of the cloning machines up. However, seconds later, they are both intact. (00:04:45)
Correction: It was only the interior of the machine that got blown up after one of the Peter clones threw one of the chicken clones into the machine, whilst the exterior of the machine remained fine. In fact, it can be noticed that the broken glass is shown from when one of the Peter clones threw one of the chicken clones into the machine just as the explosion that destroys the facility occurs.
Casual PersonRoad to the North Pole - S9-E7
Corrected entry: At the end of the episode, as the camera zooms away from the house, Santa, his sleigh and reindeer are sitting on top of the house the entire time. However, he flies in from the right of the screen and towards the viewer.
Correction: Santa was never on top of the house, that was just the Griffins' Christmas decorations of Santa and the reindeer on their roof.
Casual PersonCorrected entry: When KISS is shown on stage, Paul (The singer, also known as Starchild) has the star over his left eye. Paul always has the star over his right eye. Watch any video of KISS in makeup.
Ssiscool Correction: Paul's star is always on his right eye. It may just look like it is wrong since it's on the left side of the screen, but because he's facing forward, that his his right side. You can see when he and Gene turn their back in disgust that the Star is on the right hand side (since now the viewer and he are "facing" the same way).
Road to the Multiverse - S8-E1
Corrected entry: When Brian and Stewie are in the universe without religion, Brian asks what happened to the art of the Renaissance and they go to the Sistine Chapel to see that John Hinkley decorated the ceiling. Why is there a Sistine Chapel in a world with no religion?
Captain Defenestrator Correction: It's not a world with no religion whatsoever; Stewie simply described it as a world without Christianity. The Sistine Chapel could still exist, but not necessarily as a building with any religious significance, or possibly representing a different faith.
zendaddy621Corrected entry: When the family are at the school play, Brian suggests that it's possibly too soon for a musical about the tragic story of Terri Schaivo, implying that it's the first time the play has been done. However, Stewie (who is playing an electrical plug) meets Jared, who has been the plug every year for three years.
Purple_GirlCorrection: It's highly unlikely Brian keeps track of what play the young elementary students are putting on. This is Stewie's first year of involvement and therefore Brian's first year of awareness. He's making the observation for the first time because he just found out about the play for the first time.
Phixius Barely Legal - S5-E8
Corrected entry: In the scene when Brian and Stewie are fighting over saying "Cool Whip", Stewie spits out hair, however if you look Stewie actually never took a bite out of the pie.
Correction: He most certainly did take a bite. Less than a second after Stewie spread a bit of Cool Whip on his piece of pie, he very quickly scoops out a piece and eats it.
Death Lives - S3-E6
Corrected entry: When Peter is in the van with Cleveland, Cleveland's voice is slow and how it normally is, except it shouldn't be. In another episode, Peter recounted that Cleveland was an auctioneer and was hit with an antique which made his voice slow.
curiouskidCorrection: Being a caller at an auction is a skill that needs to be learned. Since Cleveland originally spoke slowly, it's more likely that he began to speak faster once trained as an auctioneer, but the antique hitting him made him revert to his normal slow speaking voice.
rswarriorCorrected entry: At one point, Peter's father tells Lois "Maybe you won't go to Hell after all. Maybe you'll just be sent to Purgatory with all the unbaptized babies." Catholics believe that unbaptized babies are sent to Limbo, not Purgatory, and a fanatically devout Catholic like Mr. Griffin would know that.
Correction: Purgatory IS Limbo. Purgatory is the place between heaven and hell, as is Limbo. By definition we are merely dealing with a discrepancy in perceived common language.
Corrected entry: Admittedly it would be difficult to understand him, but during the first three episodes of series one, Stewie properly enunciates without any teeth (he grows teeth in episode 4).
Correction: He's a baby that talks, that in itself is a physiological impossibility.
Phixius Peter Griffin: Husband, Father...Brother? - S3-E14
Corrected entry: The end credits for this episode feature Peter rapping the lyrics to the theme tune.
KaraCorrection: Kind of obvious - not really trivia.
The Thin White Line (1) - S3-E1
Corrected entry: When Peter catches up to Brian in the golf cart at the rehab facility, Brian is seen wearing a track suit with a headband and holding hand weights. Peter convinces him to go mess with the pregnant teens across the lake and in the row boat over Brian is still wearing the tracksuit and headband. However, when we see them enter a room where the pregnant teens are he has obviously taken off the tracksuit and headband and is just seen wearing his dog collar.
Tobin OReillyCorrection: Where's the mistake? In the original entry it states "He's obviously taken off the tracksuit and headband" Clearly enough time has passed from docking the boat to arriving in the hallway for him to do so.
Ssiscool Corrected entry: When Peter first has a piano in his bar, it's an upright model commonly seen in bars. The next night, it's a full sized Grand Piano. Given the width of the stairs, the size of the doorways, it seems unlikely to have been put down there without a considerable amount of effort.
Movie NutCorrection: The whole area was transformed, a stage, extra lighting, etc. So, yes, a considerable amount of effort was done. Lois was excited to perform and conceivably hired a bunch of professionals to fix the area up (who are more than capable of bringing a piano down stairs and setting it up).
Corrected entry: When Stewie's chatting up 'Misti', the equation he writes on his napkin changes between shots. (00:11:40)
BlibbetyblipCorrection: The equation ( 1 1/2a 3=1/8 )stays the same throughout.
Ssiscool 
Correction: That's the whole point. It wasn't supposed to be realistic or logical.