Continuity mistake: When Peggy, Hank, and Tammy are in the car and Peggy says "We all make mistakes", her lipstick is a duller, orange shade, then it goes back to being red.
Continuity mistake: As Kahn is yelling at Bobby after he sees him kissing Connie over the fence he chases after Bobby and in one of the shots you can see the ladder Bobby used is gone. The following shot it shows Luanne in the bathroom and through the window we see the ladder has reappeared. The other change in the shots is the ladders and their size. Before the shot in the bathroom the ladder's height (Bobby's ladder) was enough it reached over the fence. As we see the ladder through the bathroom it's not even reaching the top of the fence.
Hillennium - S4-E10
Continuity mistake: Just before Hank uses the varnish on the grandfather clock you can see a quick shot of the power drill. This would have been impossible as we saw, and he told Bobby, he got rid of all his power tools the day before for some corn. Later in the scene when he wakes up the power tool has disappeared for good.
Continuity mistake: After Peggy has fallen out of her wheelchair she had her bag on the back of her wheelchair. When Cotton is taunting her and pushes the chair near her, the bag has disappeared.
De-Kahnstructing Henry - S3-E13
Continuity mistake: As Kahn breaks the ceramic radio panda at the garage sale there are about 3 people behind him. He then starts to tell everyone to leave and then there is an aerial shot and the 3 people that were behind him have disappeared even though no one moved whilst he was shouting. (00:12:30)
A Beer Can Named Desire - S4-E6
Continuity mistake: After Bill kisses Rose on the tombstone you can see he has quite a few sweat stains visible on his shirt. Bill then goes inside the house looking for Rose and the stains have disappeared.
Continuity mistake: As Peggy is trying to explain herself to Dooly's parents, the parents are sitting vertically from Principal Moss's desk. When we see Moss looking up in the school book, the mother is now, still sitting, almost facing the desk. (00:07:10)
Three Coaches & a Bobby - S3-E12
Continuity mistake: When Coach Sauers is trying to run over the football players with his car on the football field, there are a lot of track marks on the field. There is then a tracking shot of Sauers from straight ahead of his car and you can see there are absolutely no track marks whatsoever, on the field behind him. (00:15:30)
Continuity mistake: When Bobby is trying to convince Hank's friends to join the abstinence club, and when he asks Boomhauer he just stays silent. Bill then signs up and gets one of the cards Bobby has. As Hank starts to talk it goes to a close up of him but in the next shot Boomhauer is looking at one of the cards. Bill still had his card so where did Boomhauer get one of those cards?
Little Horrors of Shop - S4-E4
Continuity mistake: During the scene where Peggy is taping a photo of Hank to the blackboard to discuss about the substitute teacher of the year. When she tapes it up you can see it's near the top of the board near the writing accompanying it. After a shot of the students the photo has moved down quite a bit along with the writing that was there.
Hank and the Great Glass Elevator - S5-E11
Continuity mistake: As Peggy is testing the burgers at the end to see the difference she moves to the charcoal grill and puts three patties between 2 buns. In the next shot when she is throwing them out there are two extra buns in amongst the middle patties.
The Wedding of Bobby Hill - S3-E14
Continuity mistake: During the scene where Peggy and Hank are enjoying a spa, Hank fills up the champagne glasses with beer. He stops pouring a bit before the top of the glasses and there is very little foam on the top. In the very next shot both their glasses have foam overflowing from it.
Peggy Makes the Big Leagues - S5-E4
Continuity mistake: During the booster club meeting at the beginning of the episode, there is some guy with a moustache sitting at the end of the table. After they finish the video of the football, there is a different looking guy sitting there.
When Cotton Comes Marching Home - S5-E5
Continuity mistake: As we see the float for the time in the driveway when Cotton arrives home, the float is vertical to the driveway. In the following shot Peggy starts asking Cotton for his war medals, the float is now turned around horizontally to the driveway.
Continuity mistake: In the scene where Bobby is refusing to partake in thanksgiving celebrations and Hank starts asking him whether he's nervous about the turkey carving. You can see Bobby's carving knife is pointed toward the wall with the blade (curved edge) pointed towards Bobby. Before Bobby picks it up to give back to Hank its facing the other way.
Other mistake: In the episode, Hank's truck is destroyed when it gets stuck on the train tracks and a train smashes into it. Later on when Bobby is walking home by himself he finds the cover for the gear shift stick and puts it in his pocket. After a while Hank finds Bobby and Bobby gives him the cover and Hank puts it right on. Sounds fine. The only problem is that Hank has to screw the cover back onto the stick shift but doesn't have to remove any part of the previous stick. When the train hit the car, Bobby puts the cover right in his pocket and it would have had a bit of the stick left in it, as he had to screw it on. Its unlikely Bobby would have removed the bit of stick inside it because when we see him pick it up there is no part of the stick he would have been able to grip to unscrew it from the cover.
Continuity mistake: As the plumbers are installing Hank's new low flow toilet, the guy with the red hair stands up and is at level height with his co-worker standing next to him. In the next shot he is now a few inches taller.
Continuity mistake: Luanne in one scene tells Hank a man asked if she would like to join the mile high club and when she tells him she is facing Hank. In the next shot she is standing in the same position but has turned around and is facing away. There was not enough time for her to move between shots.
Continuity mistake: When Herrera is swinging the fire in the trick for Nancy's birthday party, you can see Dale, Nancy and John Redcorn are at their tables sitting near the stage. In some of the following shots you can see they are further back, towards Hank and Peggy.
Continuity mistake: In past seasons, Hank's truck has obviously been shown as a 1992-era Ford Ranger,however in this episode it is shown as a 1980's-era Ranger.