The building where the Chinese gang is found is better known as Paddy's Pub in It's Always Sunny in Philadelphia (2005).
Jimmie F. Skaggs's final acting role (as Norm, the Mechanic). He passed away two weeks before it was originally broadcast.
The answer to the crossword puzzle question Monk asked the Chinese man is apparently Leon Jaworski, the Special Prosecutor who investigated Pres. Richard Nixon during the Watergate scandal.
The U.S. Mint in San Francisco does not produce any coins in circulation. It does, however, produce clad and silver proof coin sets and commemorative coins as authorized by the U.S. Congress.
The character of Salvatore Lucarelli reappears in the Lee Goldberg novel 'Mr. Monk and the Dirty Cop'. Lee Goldberg also co-wrote this episode.