Mr. Monk is the Best Man - S8-E13
Continuity mistake: When Stephanie leaves Stottlemeyer's office (after he tells her to have TK call him), we see her walk out the door. When the shot changes to Monk, you can see Stephanie in the reflection on the TV walking out of the office again.
Mr. Monk Goes to the Dentist - S4-E15
Character mistake: He extracted the wrong tooth. He states 3 is the problem, then goes to the other side (left), which would be tooth 14.
Continuity mistake: When Monk comes home (after being at Steve's house) and starts to pet the dog, the dog sits down. But in one shot she's suddenly standing and wagging her tail, but then back to sitting in the next shot.
Mr. Monk Makes the Playoffs - S7-E13
Other mistake: At the end when Bob Costas is signing off, the mic is in his right hand with the window on his right). When it switches to Natalie watching the upside down TV, the image on the screen is a flipped image (so that the mic is in his left hand and window is on his left). The broadcast wouldn't be a flipped (or mirrored) image than what we see, otherwise, everything the viewer is watching would be backwards (like the writing and numbers).
Mr. Monk Paints His Masterpiece - S6-E14
Character mistake: While the concept of the knife height and stab wound is OK, the way Monk measures the height of the knife is way off. He says it's 48", which is 4 record lengths, but he doesn't put the bottom of the record where the top previously was, sometimes he only moves it half way up. Then the top of the record is above the knife, so it couldn't be 48" even if it was done right. As particular and accurate as Monk is, he wouldn't make this mistake.
Mr. Monk and the Genius - S7-E2
Character mistake: At the beginning when Monk is writing Natalie's check, we see a shot of it, but the I in "nine" isn't dotted. As meticulous as he is, Monk would never leave an I undotted (we've even seen him dot someone else's i) especially since it would bother him.
Mr. Monk and His Biggest Fan - S6-E1
Continuity mistake: When Randy is playing "Timber", we see a close up shot of the boy taking out a middle piece and there's no other middle pieces removed. But in the next shot, you can see 2 middle pieces gone.
Mr. Monk Goes to the Hospital - S5-E16
Continuity mistake: When the police are told room 623 is the geriatric ward, Stottlemeyer is holding the seal with the glove up in his right hand when Randy leaves. But in the next shot, his hand is down and you don't see the glove.
Mr. Monk and the Rapper - S6-E2
Continuity mistake: When Murderuss introduces Snake, we see Monk turn to shake his hand and the briefcase on the table is closed. But in the next shot, it's opened.
Mr. Monk Makes the Playoffs - S7-E13
Revealing mistake: When Monk steps in front of the limo to stop it from leaving, on the bottom right of the screen there's a black line that doglegs to the right (seen over Monk's coat sleeve). It's like the camera was cracked or something was stuck to it. When the camera angle changes it's gone, but is there where the camera is back on Monk.
Mr. Monk Goes to a Rock Concert - S5-E8
Other mistake: At the end, when they're putting Kris in the cop car, you can see the car numbers don't match. On the door it's listed as car number "664", but on the roof it's is number "32" something.
Mr. Monk and the Class Reunion - S5-E6
Continuity mistake: In the opening scene, when the woman comes out of the room, you can see the rug in the hallway. But in the next shot, there's two plastic runners over the rug. It alternates from being there to not depending on the camera angle.
Mr. Monk and the Actor - S5-E1
Continuity mistake: When Ruskin and Monk are tussling with each other, the gun falls onto the wipers, with the barrel touching the wiper and handle up. The next time we see the gun, the handle is down and touching the wiper. It keeps flipping back and forth in various shots.
Continuity mistake: After DeLancy loosens the tie Stottlemeyer gave him, the position of the knot changes without him touching it.
Mr. Monk and the Big Game - S5-E3
Continuity mistake: The shoelaces Monk is ironing change position without being touched, depending on the camera angle.
Mr. Monk and the Garbage Strike - S5-E2
Continuity mistake: The garbage bags seen behind Dr. Kroger's window keep changing depending on the camera angle.
Mr. Monk and the Garbage Strike - S5-E2
Other mistake: The text in the news article about Jimmy's death is just gibberish and random keystrokes.
Mr. Monk and the Garbage Strike - S5-E2
Factual error: They said the murder occurred on Monday, April 5th (2006). But that was a Wednesday.
Mr. Monk and Little Monk - S4-E8
Continuity mistake: After the principal takes the stolen money, he shows the $5 bill he wrote on. But in the close up, the bill changes and so do the way the fingers are positioned.
Mr. Monk and Mrs. Monk - S4-E6
Continuity mistake: When "Trudy" walks into the coffee shop, Natalie flips the picture over onto the counter. In the next shot, she's holding it against her body. It's back on the counter the next shot.
Answer: Notice also that in the opening credits scene when he is touching parking meters her also wipes his hand on his clothes each time he does it.