Three Coaches & a Bobby - S3-E12
Continuity mistake: Before Peggy leaves the soccer mums and goes to watch football again, the woman in the green sweater is holding a coffee cup that is of a pale brown color. When the shot goes to a close up of her talking, the color is now red. The next time you see her holding the cup, it's gone back to being a pale brown color. (00:18:15)
As Old as the Hills (1) - S3-E25
Continuity mistake: After the party when Peggy is fighting with Hank she tosses the cutlery into the sink, and the dishes are blue. The next shot of the dishes we see they are now green.
Bills are Made to be Broken - S4-E3
Continuity mistake: Whilst Bill is practising football in Hank's yard there is an aerial shot that shows Bobby & Hank walking towards Dale & Boomhauer and are close to them. In the following shot they are quite a bit further away from their previous position. Also the position of Dale & Boomhauer next to the garage changes between shots.
Continuity mistake: When Bobby is driving the golf cart, he is alone. However, when he stops the cart to invite a neighbour (also in a cart) to his party, you can see feet and knees of someone sitting in the rear of the cart.
Continuity mistake: Hank says that when he and Peggy were 18, they were already married. But in the season one episode "Square Peg", Peggy tells Luanne that she "never even kissed" a boy until she was 20.
Continuity mistake: Before John Redcorn gives Joseph the Horn & Feathers cap, he is driving and you can see there are white lane markings on the road to the left of the car. After Joseph leaves the markings on the road disappear for the rest of the scene.
Continuity mistake: At the end of the episode Peggy gives Bobby his birthday cake without any pieces missing from it or marks in the cake. However earlier in the episode, Bobby brings cake for Connie. It's doubtful that there were two identical cakes. You can tell this is the same type of cake because the cream on the top is the same shape and color Bobby brought to Connie.
Peggy Hill: the Decline and Fall (2) - S4-E1
Continuity mistake: In one scene Hank is helping Peggy scratch one of her arms that is in a cast with some normal straws joined together. At first he is holding the last and first straws and there is only a few straws. The next shot he is holding the straws with one hand about halfway down (2-3 straws down) and there are more straws then there was before. After this shot the straws revert back to how it looked originally.
Returning Japanese (1) - S6-E21
Factual error: During the scenes where the Hills arrive at the airport in Japan, there is no flight crew outside or around the terminal when they exit. Whilst they may be the last people to exit the plane, there will be one or more crew members to farewell passengers and also to close the terminal door. There doesn't seem to be any crew anywhere close, which seems particularly odd especially as Hank and Cotton manage to just stroll back onto the plane. A little after they leave the camera crew just go right through the terminal onto the plane without anyone there to stop them.
Hank's Unmentionable Problem - S1-E6
Factual error: Hank is extremely constipated, but has a colonoscopy. He would not have been able to have a colonoscopy while extremely constipated, having not had a bowel movement in many days.
Continuity mistake: Throughout the first couple of seasons, Hank's first truck switches between automatic and manual transmissions. This is most obvious in the episodes "Chasing Bobby", in which it has a manual transmission and "Texas City Twister", in which it has an automatic transmission.
Three Coaches & a Bobby - S3-E12
Continuity mistake: The two women near Peggy, who are sitting on the benches in the stands, are seated on the fourth and fifth levels in the wideshots, but in the close-up they're seated on the third and fourth levels.
Continuity mistake: Whilst Joseph is fixing his bike, there is a green mat next to it. As he starts to ride the bike the mat has now disappeared.
Continuity mistake: As Peggy & Bill are checking into the hotel, there is a wide shot of the lobby and Peggy is wearing a sleeveless shirt. In the next shot that is a close up and she is wearing a pink full sleeve shirt.
Hillennium - S4-E10
Continuity mistake: As Peggy goes for her present and rips the wrapping paper to see it's a grandfather clock, it is set at 12:35. The following shot it's at 11:55. A little later on when Hank is about to varnish the clock, the time changes again before and after he closes the garage door where he is doing the varnishing.
The Wedding of Bobby Hill - S3-E14
Deliberate mistake: As Luanne is putting the dirt into Bobby's fruit pie you can see she rips open a large part of the packet. Yet in the next scene when Bobby is about to eat the pie there is no sign of where Luanne ripped the packet. Its likely this was deliberate as the joke in the scene was Bobby and Luanne's constant attempts to get back at each other, if they had left the large hole its likely Bobby would have not fallen for Luanne's prank.
Plot hole: As Dale comes to Hank's work and talks to Hank about the gun incident he has a spray pack on his back that is filled with poison and by accident sprays Joe Jack. Yet in the episode "The Exterminator" Dale was told by the doctors that he would not be able to use any type of hazardous chemicals with bug spraying as his lungs wouldn't be able to handle the fumes any more. Even if he ignored the advice the chemicals would have at least incapacitated him or killed him.
Continuity mistake: After Hank returns from the permit office and he and Bobby are in the car, Hank has his seat belt on and his hands on the steering wheel. However in the very next shot his seat belt is completely off without moving his hands.
Won't You Pimai Neighbor? - S4-E18
Continuity mistake: After Bobby takes the first spiritual test, Minh and Kahn come behind Bobby. Looking at Minh's hair and the top of her dress are both very wet. However before this she was completely dry and there was no scene where water was sprayed on her. She stays wet for the rest of the scene probably indicating that there is a scene deleted from the episode as it is far too obvious to be missed.
Deliberate mistake: After Peggy has knocked King Philip off his horse at the end you can the sun is setting behind her, when it goes to a reaction shot of Bobby and Luann in the stands, it is a blue sky and sunny behind them. The following shot of Peggy it goes back to the sun setting. The mistake could be said to be deliberate as the shot was used earlier in the scene and probably used again to save time and money than re-animating the exact same shot.
