Executive Producer Michael J. Weithorn often sneaks his name onto the set. In one episode, Arthur attempts to sell the "Arthur's head screwdriver" to Weithorn Hardware and in another, Doug's dentist office is in the Weithorn Medical Center.
All of the exterior shots of the Heffernan house are stock footage originally filmed for Sibs (1991) seven years before The King of Queens was filmed. The house is located at 519 Longview Avenue in Cliffside Park, New Jersey.
There are pictures on the fridge of Don Geronimo and Mike O'Meara from the nationally syndicated radio show "The Don and Mike Show". The Reference to them not knowing who they were was an inside joke. They also guest appeared in the episode "Roamin' Holiday" (2.10).
In the episode "Restaurant Row" ( #2.23) there is a van that passes doug as he tries to break into his car. On the side it says "Scott Voss Locksmith". This is also his characters name in the movie " Here Comes The Boom".
In real life as in the show Kevin James (Doug) is an avid Golfer and that might have played into the naming of his best friend Deacon Palmer as that was the name of Arnold Palmer, the professional Golfers father, Milfred "Deacon" Palmer.