Mr. Monk and the Astronaut - S4-E14
Continuity mistake: When the captain receives the victim's phone record (outside at the neighbor's house) he calls a number on the bill. But the phone starts to ring (on the other end) before he presses the last digit.
Mr. Monk and the Astronaut - S4-E14
Continuity mistake: When Monk is describing the laser pointer incident to Dr. Kroger, the doctor closes his black folder and puts it on the arm of his chair. In the very next shot, it's back in his lap, and he again closes it and places it on the chair arm. (00:25:00)
Mr. Monk and the Astronaut - S4-E14
Continuity mistake: When the Astronaut is talking to the kids in the classroom, the position of his arms changes from by his sides to folded between shots.
Mr. Monk and the Astronaut - S4-E14
Continuity mistake: When Steve Wagner gives the class red laser pointers, he tells them to pass them back. The girl on the far right of the shot turns around. When the shot changes, she begins to turn around again.
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.