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.
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.
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.
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.
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.
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.
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.
Revealing mistake: Whilst Bobby is reversing the truck before hitting the flagpole in Bill's yard we see the driveway in front of the truck. The very next shot shows Peggy from behind the truck instructing him how far to go to the flag pole and you can see they have used the same background as the shot before from the other angle. You can tell this as both shots are the same background as both angles despite from different viewpoints are exactly the same items and objects in both shots. Added to this there is a driveway in each shot, and Bill doesn't have 2 driveways in his backyard.
Continuity mistake: Bill picks up the case of Metalife products to put them in his car. After discovering he has a blister he picks up the box and the logo on the box is facing the left-hand side. The next shot it's changed to the front of the box. The change of shots was instant so there was no chance he could have turned the box around.
Continuity mistake: When Hank goes to buy an "L pipe" at the Mega Lo Mart, his truck is parked in the middle of the parking lot and nothing in between the middle of the cars. As Hank is about to leave in his truck there are concrete blocks ahead of his car (with a sidewalk next to them). Also if you look at the car behind Hank's truck before he is about to leave it is a white color. Whilst he is reversing it is now a dark blue color.
Won't You Pimai Neighbor? - S4-E18
Deliberate mistake: Before Bobby takes the final spiritual test, you can see Connie is behind Bobby with her parents. When Bobby starts looking at the objects she has moved over to the right of Bobby nowhere near were her parents were before. This would have been deliberate for when he's taking the test he picks Connie in the mirror and this would have been impossible to do if she was right behind him.
Won't You Pimai Neighbor? - S4-E18
Continuity mistake: As Hank and Bobby are leaving the reverend's office, Hank puts his hands on Bobby's shoulders and is at an angle away from the reverend. In the next shot from the reverend's angle we can see he is facing her and the position has changed from the previous shot.
Peggy Hill: the Decline and Fall (2) - S4-E1
Continuity mistake: When Peggy is drinking the formula for breakfast, she has a small napkin placed over her neck cast. As Peggy and the baby start crying the napkin has disappeared.
Won't You Pimai Neighbor? - S4-E18
Continuity mistake: When Hank looks at his invitation he reads the writing in it. The next shot you can see the writing on the card as if Hank had turned the card over pointing towards the ground. However there was not enough time between shots for him to have turned it around.
Continuity mistake: In the scene where Bill is trying to open the beer can with the back hoe, he rips up the pavement with it. As Hank sees the mess he gets in the machine and pushes the pavement back that Bill tore up. When Boomhauer comes along you can see his foot falls into the hole and gets stuck even though Hank pushed it back. Also if you look the soil Bill dug up has disappeared when Boomhauer comes along.
Continuity mistake: When Bobby & Peggy are about to steal Bill's flag, the truck drives right up against the flagpole. In the next shot Bobby is standing next to the flagpole and there are a few changes. The first is that the truck has a bit of space between the back of it and the pole, whilst the first shot it had no space in between (as it hits the pole). The other change is where the rope is knotted on the pole. In the first shot it was on the opposite side of where Peggy was standing. The next shot she has not moved but the rope is right next to Peggy facing her.
Transnational Amusements Presents: Peggy's Magic Sex Feet - S4-E23
Other mistake: Hank is scraping his grill after grilling and charcoal briquettes can be seen in the propane grill. (00:07:38)
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.