Trivia: Brooke Adams, Tony Shalhoub's real-life wife, has appeared on the show 5 times. In S1 as Leigh the flight attendant Monk drives crazy in "Mr. Monk and the Airplane"; in S3 as Mrs. Carlyle in "Mr. Monk and the Kid"; in S5 as Sheriff Butterfield in "Mr. Monk Visits a Farm"; in S7, again, as Leigh the flight attendant in "Mr. Monk's 100th Case"; in S8 as the crazy cat lady in "Mr. Monk and the Badge."
Trivia: Leland Stottlemeyer and Randy Disher (named Randy Deacon in the pilot episode) were named for Inspector Lestrade in the Sherlock Holmes series. Take the first two letters of their names (LEland STottlemeyer, RAndy DEacon), and they spell LESTRADE.
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.