Mr. Monk Meets His Dad - S5-E9
Continuity mistake: When Julie talks to Monk on the phone, her hair is down over her right shoulder but swept back behind her left one. When she hangs up and hands the phone to her mom, the hair is suddenly covering her left shoulder instead, and now her right shoulder is bare. (00:17:15)
Mr. Monk Meets His Dad - S5-E9
Continuity mistake: Jack's big rig has a huge Christmas wreath on the front grill. When the truck loses its brakes, there's an overhead view of it careening down the road, and the wreath has disappeared. It's back in the next shot, though. (00:34:30)
Mr. Monk Meets His Dad - S5-E9
Continuity mistake: When Monk is looking through the boxes on the trailer, on the first shot, the box marked "Tucson" isn't flush with the box underneath. But after, it's flush without anyone touching it.
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.