Mr. Monk and the Buried Treasure - S6-E6
Continuity mistake: When Monk and Dr. Kroger are in the session and Monk asks Dr. Kroger where he got his watch, Dr. Kroger puts his arm on the arm of the chair and his hand across his mouth. From the back, he has his hand on his cheek, but from the front again it is back on his mouth.
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.
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.