Ray Porter is the third actor to play "Dale 'The Whale' Biederback." The other two actors were [link=nm0035060 and Tim Curry.
Dale the Whale refers to himself as a simple man, of philosophic joys. This is a quote from the song "I Will Never Let a Woman in My Life", sung by Professor Henry Higgins, in the musical My Fair Lady (1964).
The guitar Disher is playing in the Captain's office while writing his song for Monk's memorial service is the same guitar that Marcy plays in Mr. Monk and His Biggest Fan (2007).
The bouquet of flowers that Randy brought in was from Sharona Fleming and Benjy. Sharona was Monk's first nurse/assistant and Benjy was her son.
The Italian police officers are from Amalfi, Italy. Supposedly the sister city of fictional Riverton, California, Amalfi is a city of 5,100 on the Gulf of Salerno in southwest Italy. Amalfi has a real-life American sister city in New Haven, CT.