Mr. Monk and the Man Who Shot Santa - S6-E10
Factual error: Michael Kenworthy and his robbery crew made plans to move to Ecuador after the heist. That wouldn't work because the United States has extradition agreements with every country in the western hemisphere.
Suggested correction: This is technically true, however, Ecuador is a relatively easy country for US expats to request political asylum in.
Mr. Monk and the Bad Girlfriend - S6-E4
Continuity mistake: In the first shot, when the captain is chatting on the computer and Monk is looking at him through the glass, the webcam we see is white and round. In the next scene, when Monk goes into the captain's office, the webcam is now gray and square.
Mr. Monk and His Biggest Fan - S6-E1
Continuity mistake: The stacks of yellow craft blocks that Marcy is carving with her knife change both positions and quantity between shots. (00:20:00)
Mr. Monk Joins a Cult - S6-E11
Continuity mistake: After Dr. Kroger tosses Trudy's picture to the floor, Monk drops the book he's been holding onto the mattress and kneels to retrieve the photo. In the next shot, the book has jumped to a spot on the floor beside him. (00:34:00)
Mr. Monk and the Daredevil - S6-E7
Revealing mistake: When Monk, Natalie, and Joey are fighting on the roof, the end of the metal pipe in Joey's hand wobbles around a lot, as if the pipe is made of rubber. (00:37:20)
Mr. Monk Goes to the Bank - S6-E12
Continuity mistake: The living statue street performer holds a water bottle in his left hand while Randy questions him. When his alarm goes off and the shot cuts, the bottle jumps to his right hand. (00:08:15)
Mr. Monk Paints His Masterpiece - S6-E14
Factual error: When Stottlemeyer and Randy are at the painter's daughter's home they find a picture showing him in front of Carson papers, which leads the Captain to say: they have a contract with the treasury, they are producing the paper for the U.S. currency. This is wrong: the treasury is not in charge of printing the Federal Reserve Notes. Rather it is the privately owned Fed that prints the Federal Reserve Notes and then lends it to the treasury at interest. And the interest added is the reason why there will never be enough money to pay the interest, i.e. the state debt.
Suggested correction: While the Federal Reserve is in charge of maintaining our currency (through the creation or destruction of currency, real or digital), the U.S. Department of Treasury is in fact responsible for printing money, through the Bureau of Engraving and Printing.
Mr. Monk Is on the Run (1) - S6-E15
Plot hole: The D.A. says that ballistics show that the bullet came from Monk's gun. The simplest thing to do would be to look at the gun, they'd know that it hadn't been fired and was full. With Monk's OCD we know it was cleaned, and the sheriff came in right after, so Monk couldn't have reloaded it. Yet they overlook all of this.
Mr. Monk and the Daredevil - S6-E7
Continuity mistake: During the fight with Harold's cousin Natalie's shoes are on and off her feet several times.
Mr. Monk and the Wrong Man - S6-E8
Plot hole: Monk supposedly hears for the first time that Max was not carrying anything away from the crime scene when he speaks to the witness in front of the church. This leads him to conclude that there must have been a 2nd man with Max 14 years ago. But this does not make sense given that the witness with her photographic memory did not change her testimony and given Monks ability to observe and memorize details it is very unlikely that he did not come to that conclusion 14 years ago already. (00:32:45)
Mr. Monk Is on the Run (2) - S6-E16
Revealing mistake: When Natalie visits Dale in prison you can tell that Dale is wearing a "fat suit". The suit on his arm is folding up on itself like a glove.
Mr. Monk and the Rapper - S6-E2
Continuity mistake: After Monk tries to get out of the contract with Murderuss, he walks to Stottlemeyer with jewel necklaces around his neck. In the next shot (after Stottlemeyer asks "How did that happen?"), the necklaces have disappeared. (The golden teeth stay, though).
Mr. Monk Goes to the Bank - S6-E12
Continuity mistake: When Monk is trying to convince the old woman to use the other pen so the ink in them will be even, in the shots from behind him, the pen's chain is hanging down below the counter. In the shots from in front of him, the chain is pulled taught. (00:23:45 - 00:24:15)
Mr. Monk and the Man Who Shot Santa - S6-E10
Other mistake: When the star of Bethlehem is stolen, the shots are reused from episode 4-13, with a flail used to breach the glass case, which isn't present in this episode.
Mr. Monk and the Buried Treasure - S6-E6
Continuity mistake: In the captain's office, Randy is holding his cup with both hands and he states that he has a Motorola phone in his pocket. He begins to turn to his left to expose his suit pocket jacket. In the very next shot, which is a wide angle of everyone, he is beginning his turn again so Natalie can retrieve the cell phone.
Mr. Monk and the Buried Treasure - S6-E6
Continuity mistake: At the end of the episode, when Dr. Kramer and Monk are talking, Dr. Kramer is hunched over listening to Monk. In the very next camera shot, with the camera pointing at Dr. Kramer, he is sitting straight up and just finishes crossing his arms. A couple of seconds later, it switches back to Monk and you can see Dr. Kramer hunched over again and arms uncrossed.
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 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 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 Joins a Cult - S6-E11
Revealing mistake: When Monk and Natalie are talking to the cult members, a Culver City bus can be seen driving in the background, which is a Los Angeles bus, but the show takes place in San Francisco. Culver City is home to a lot of movie shooting. (00:09:15)