Continuity mistake: In the opening scene, the orange-and-white scarf that Paul Harley uses to blindfold Lorissa changes positions and color patterns repeatedly between shots as he escorts her from the pool to the garage.
Plot hole: In this episode the police are using the toupee of the commissioner to identify the torso as the missing woman. In reality that would not be possible since cut hair is missing the root and therefore only contains mitochondrial DNA, which can only be used to identify a human's relation via the female lineage, as it is the same in relatives and passed through generations from the mother to her children. Furthermore, the identification of said torso would likely not be sufficient proof that Mr. Harley killed her as he may claim that somebody misled him to believe she was in Paris by placing the telephone call he mentioned to police.
Continuity mistake: When the commissioner is getting into the car, he opens the door pretty wide. In the next shot when his hat gets taken, he's seen opening the door again.
Mr. Monk Meets the Godfather - S3-E5
Continuity mistake: In the scene where Monk meets Salvatore Lucarelli (Philip Baker Hall), Lucarelli is cutting up fisheads on a cutting board. Throughout the scene the fish on the table constantly change between shots. One of the notable changes is when Lucarelli is discussing the case he has for monk there is a shot of a fish, and when the shot changes you can now see the fish's head has all of a sudden been chopped off.
Mr. Monk and the Girl Who Cried Wolf - S3-E6
Visible crew/equipment: Nurse Davis swings open Disher's car door at the end, and captures a reflection of the camera and the entire film crew standing nearby. (00:40:40)
Mr. Monk and the Girl Who Cried Wolf - S3-E6
Continuity mistake: About midway through, the new nurse is sitting on Monk's kitchen counter eating a sandwich. She puts the sandwich down on a plate as she hops off, the shot switches to another angle to include Monk as she walks away, and the sandwich has suddenly jumped off the plate and is now lying on the counter a few feet away. Neither of them had time to pick it up or move it.
Mr. Monk and the Girl Who Cried Wolf - S3-E6
Continuity mistake: At the end, when Sharona and Monk are leaving, Sharona opens the car door. But in the next shot, it's closed.
Mr. Monk and the Girl Who Cried Wolf - S3-E6
Continuity mistake: When Sharona sets the two grocery bags on the counter, the position of the items change after they tip over and after she picks the one on the floor up when talking to her ex.
Mr. Monk and the Girl Who Cried Wolf - S3-E6
Continuity mistake: After Sharona's class, she's holding her book upside down when talking to the teacher (so the binding can be seen). In the next shot, the book is held right side up. Afterwards, when she's walking away, the book is upside down again.
Mr. Monk and the Girl Who Cried Wolf - S3-E6
Continuity mistake: When Meredith's husband has his heart attack, his head falls into the soup bowl. However, in one shot the bowl (with his head in it) is tilted; after a cut, it is suddenly flat on the plate.
Mr. Monk and the Employee of the Month - S3-E7
Continuity mistake: When the episode begins, the Employee Of The Month is shown walking into Mega-Mart. The exterior of the store is shown as a cement color and there is a garbage can right beside the front door of Mega-Mart. When the Employee Of The Month is shown opening up the door to the store, just seconds later, you will see the exterior of the building is now yellow and white and there is no longer a garbage can beside the door. Clearly they are using two completely different buildings. (00:00:40)
Mr. Monk and the Employee of the Month - S3-E7
Audio problem: The audio of the victim screaming is repeated. The "Oh! Help! Help!" sounds the same twice. (00:02:05)
Mr. Monk and the Employee of the Month - S3-E7
Audio problem: There is a high-pitched feedback noise that is only audible every time one particular camera is being shown during this scene. (00:10:35)
Mr. Monk and the Employee of the Month - S3-E7
Plot hole: Monk wants to take a look at the case that got Christie to leave the force. But given that they are ordinary cops they would not be able to just go and pull internal affairs files.
Suggested correction: I'm not sure what you mean by "ordinary" cops. Captain Stottlemeyer is the one pulling the file. Plus, we don't see what they had to do to request access the files. There's no indication they just went in and randomly pulled the file with no authorization.
Mr. Monk and the Game Show - S3-E8
Continuity mistake: When Monk is telling Dwight how the guys are cheating, he holds the green sachet with one hand, but in the next shot, he is holding it with two. (00:32:30)
Mr. Monk and the Game Show - S3-E8
Continuity mistake: Whilst Monk is being introduced to the long standing winner on the show a stagehand is adjusting the microphone on his jacket with both hands. As he says "Are you almost done?" the shot changes and the stagehand is just using his left arm to adjust it. The stagehand then pulls his arm away but the next shot he is adjusting the mic again and using both hands to do it. It keeps changing throughout the rest of the scene.
Mr. Monk and the Game Show - S3-E8
Continuity mistake: The way Lizzy is holding the envelope changes in the different shots. Plus, the flap is down at first but then up later.
Mr. Monk and the Game Show - S3-E8
Continuity mistake: When Monk visits Natalie's home, he stops in her room and the door opens left to right. At the end when he goes in her room again, the door opens right to left.
Mr. Monk Takes His Medicine - S3-E9
Visible crew/equipment: When Monk is talking to the two patrol officers about the suicide and walks down the street, the backlot trailers and equipment are visible around the corner of the building and you can also see a set golf cart. This is supposed to be the street that the shooter and biker drove down earlier in the episode. (00:07:13)
Mr. Monk Takes His Medicine - S3-E9
Continuity mistake: During Monk and Sharona's race to the armored car robbery scene, the red Mustang's rear-view mirror disappears. When they arrive, though, it's back in place on the windshield. (00:36:30 - 00:38:30)