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.
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: 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.
De-Kahnstructing Henry - S3-E13
Continuity mistake: When Minh is taking out the garbage she trips over and starts punching the 3 bags she is carrying. You can see the bags are securely tied up at the top of the bags. The scene then goes to Hank and Peggy and you can hear Minh continue her punching on the garbage bags. As the shot goes back to Minh on the ground when Hank goes to see her 2 of the bags are now open and garbage is everywhere. Its unlikely she ripped open the bags herself whilst punching them as Hank ties them up at the top and there are no rips in the bag. They were also securely tightened to begin with. (00:15:25)
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.
De-Kahnstructing Henry - S3-E13
Continuity mistake: As Kahn is putting the golf club away after Hank has just used it there is a groove in the locker to support the club. Kahn seems to place the club horizontally in the locker no where near the groove and to the left of it. The next shot its now sitting in the groove vertically. (00:05:05)
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.
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.
De-Kahnstructing Henry - S3-E13
Continuity mistake: After Kahn shows the guys his new car, he shows off his new sunroof too. Later when Kahn goes to Strickland propane and in the establishing shot it shows his car outside the store and the sunroof is no longer on his car and no marks to indicate its just closed. (00:01:00 - 00:02:00)
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.
Continuity mistake: During the first (or the second) Board & Zoning meeting, there is a jug of water next to Nate. In the wide shots of the board the handle is to the left but in the close ups of Nate it's now facing the right.
Continuity mistake: As Peggy comes to see Bobby about how his essay is going, there is a pad and pen next to him on the bed. The next shot Peggy sits down next to him which was where the pad and pen were on the bed. She then reaches for the pad and pen from behind Bobby. She never makes any movement before or after she sits down so there is no way she put the items would go to being behind Bobby.