Mr. Monk Takes Manhattan - S3-E1
Trivia: When Monk is playing the 'find the queen' game with the crooked busker, one of the onlookers is Andy Breckman, the show's creator. He can be seen smiling in a close-up shot of him after Monk wins a second time. He has glasses, a beard and moustache, and is bald on top.
Mr. Monk and the Blackout - S3-E3
Trivia: The place where the "San Francisco Bicentennial Jamboree" is being held at is called the Landau Auditorium, another tribute to Andy Breckman's (the show's creator) wife, Beth Landau.
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.