Continuity mistake: At the beginning of the episode there is a shot of the parked vehicles and the Hill's car is yellow (the car next to Dale's van). As Bobby and Connie are talking, the car behind Bobby (the Hill's car) is now blue.
Three Coaches & a Bobby - S3-E12
Continuity mistake: As the football team is meeting Coach Sauers for the first time, you can see the team from behind with Bobby kneeling and Joseph behind him to his right. However, when the shot shows the group from the front, Joseph is now to the left and some kid with brown hair to Bobby's right. (00:07:40)
Continuity mistake: As Luanne is becoming a "Born again" virgin, she yells after being dunked in the water. She yells "I'm a Virgin." and there is a shot to the left of two guys in the distance playing Frisbee look behind to their left. The shot sees them from the left meaning they were to Luanne's left. A few shots later Luanne is getting out of the lake and one of the guys who was playing Frisbee comes up to her from her right side and the other guy follows him. There wouldn't have been enough time in the scene for them to get all the way over to the right side of the field and not much reason to either.
Continuity mistake: As Hank is telling Bobby off about stealing the water you can see that Bobby's closet is behind Hank. Its position in this scene is opposite the bed. However in every other episode is in front of the foot of Bobby's bed.
Continuity mistake: When Peggy tries to sell Dale the Metalife products she is just passing the fence (at the bottom of her driveway). In the following shot we her cart is in the middle of the road. The change of shots there was not enough time for her to have made that distance from the end of the driveway to the middle of the road.
Continuity mistake: After Connie tells Hank she is experiencing her first period, Hank consults the book that Connie's parents left for Hank. There is a close up of the folder from Hank's point of view and you see there are not many pages on each side. You can tell this as you can see the binder's covers below the papers on each side and there is not much material on either side. The next shot that shows Hank skimming through the papers each side of the folder has a lot more papers on each side than the previous shot.
Returning Japanese (1) - S6-E21
Factual error: In the airport scene in Japan, the news crew arrives to film Cotton Hill. As Cotton Hill gets back on the plane trying to escape the news crew, we see a shot from outside the plane and the news crew is out on the tarmac. With security regulations at airports a film crew wouldn't be allowed to just go out onto the tarmac.
Redcorn Gambles with His Future - S9-E11
Other mistake: In the season four episode "Nancy Boys", when Nancy calls John Redcorn and tells him that she wants him back, he says, "I'm thirty-six years old. I don't need this crap." But here while John is talking to Hank, he mentions waking up one day and realizing that he is forty. If four years had passed since his break-up with Nancy, then Bobby and Joseph would now be sixteen and at least sophomores in high school, but they are still in middle school.
Hillennium - S4-E10
Continuity mistake: Before Peggy reads Luanne and Bobby her musing about "Noel", Bobby is to her right and the shot shows them all from behind. The next shot he is to the left of Peggy and right next to Luanne, despite Luanne having Peggy and Bobby between her at the start of the scene.
Continuity mistake: When Hank and the family are approaching Cotton's table at the rummage sale, there are two empty knife sheathes and one sheathed knife on his table. In the next shot, there are 3 sheathes and 2 knives out of the sheathes. (00:03:25)
Won't You Pimai Neighbor? - S4-E18
Continuity mistake: At the beginning of the episode, Kahn gives the guys in the alley invitations for his Pimai party. As Dale opens his invitation he places the envelope in front of the invitation he is holding. The next shot they have reversed position with the invitation in front.
Audio problem: After the manager of the Wichita Falls propane store & his son start feuding with Hank about the Dallas cowboys, they start singing the theme of the Sooners football team. Hank starts singing the cowboys theme and they all try to outsing each other. When they do you can see that the son's mouth doesn't match up with what he is shouting particularly as Hank is about to leave the store.
Rodeo Days - S4-E12
Deliberate mistake: When Bobby is trying out for the cattle roping at the rodeo, he gets the rope tightly around the calf's neck. As the calf starts to drag Bobby you can see the rope is now very loose around its neck. A little later when the clowns are chasing each other the rope is back tightly around the calf's neck. May be deliberate as it may look like the calf would have been choked with the rope being so tight around its neck.
Take Me out of the Ball Game - S3-E24
Continuity mistake: The scene where Hank and Peggy are fighting to control the pancakes, Hank flips the first pancake. In the next shot he's moved onto the other pancakes but the 1st one is just like it was before he flipped it, despite not flipping it between shots.
Rodeo Days - S4-E12
Continuity mistake: Whilst Bobby is first talking to the rodeo clown, the guy in the red shirt has some red paint under his nose. When the angle changes and shows both clowns the red paint has disappeared.
Continuity mistake: After the frantic phone call from the hospital, Hank rushes to the emergency room. In the hallway there are two doors, the one to his left says "Consultation" whilst the one to his right says "Examination". He uses his left hand to open the door and in the next shot you can see the door now says "Examination" and "Consultation" on the opposite door.
When Cotton Comes Marching Home - S5-E5
Continuity mistake: As Hank visits Cotton to give his uniform, Cotton goes into the middle stall of the bathroom. If you look at the stall to the right it has its door open and no one is in there. As they are speaking you can see the door has closed in the reflection of the mirror. You can see even see it's closed without using the mirror when Hank puts the uniform down on the chair.
Audio problem: When Buck is trying to frame Hank for the murder of Debbie, he uses a hidden tape recorder to try and incriminate Hank. However the tape recordings are not the same, as they don't match up with each other. In the scene he says, "Yes I was angry. Debbie threatened to tell my wife that we had sexual relations". Later on the Sheriff is playing the tape back to Hank and the tape says: "(Small Pause) Debbie threatened to tell my wife that we had sexual relations". The tape doesn't match up on a few things. First the second recording takes a quick second before Hank starts talking despite in the first recording he said "Yes, Yes I was angry. Debbie." and no pauses in between these lines. Secondly Buck says at the end of the first recording "I got all I need" immediately after Hank finishes speaking and then he stops recording. In the second recording after Hank finishes speaking the tape keeps playing but we don't hear Buck speak.
Hillennium - S4-E10
Continuity mistake: After taking some propane tanks from work, Hank comes home and starts telling Peggy to throw out her old computer. The clock in the background starts off at 10 o'clock. Hank then sees Dale knocking at the door and the time has changed to 1:50. After Dale comes in, it changes again to about 11:35.
De-Kahnstructing Henry - S3-E13
Continuity mistake: As Kahn is ringing the bell in Strickland Propane trying to get some attention the bell is right next to his hands. When Hank comes out there is a wide shot and the bell is now a short distance from Kahn's hand. The counter also changes size as you can see where it ends just to the left of Kahn but in the wide shot the counter runs from wall to wall. (00:02:00)
Answer: Jeffrey Boomhauer is a Texas Ranger as can be seen in the final episode at the end when he sets his wallet down, it flips open revealing a Texas Ranger badge.