* ActorAllusion: Wilbur Nelson who appeared in the "American the Beautiful" episode was voiced by Creator/AlanYoung, who previously played two other characters sharing the first name: Main character Wilbur Post from ''Series/MisterEd'' and Wilbur Bowser in an episode of ''Encounter''.
** Duckman is said to have had a relationship with a Seinfeld-obsessed blind woman who thought he was Jason Alexander in a duck suit. As a BrickJoke, said woman has kidnapped Jason, who is wondering who this woman is, and why she's talking about him having a duck suit.
** In the finale ("Four Weddings Inconceivable") [[Creator/TimCurry King Chicken]] proposes to Bernice, asking "In the movie ''{{Film/Clue}}'', what was your favorite ending: A, B, or C?" to determine if they're truly compatible.[[note]]She answers "Why choose [[BetterOnDVD when the video-cassette has all three!?]]"[[/note]]
* {{Composers}}: Scott Wilk and Todd Yvega composed for all 70 episodes. Various music and songs from Frank Zappa were also used in the first two seasons.
* CrossDressingVoices: Creator/BrianDoyleMurray plays Agnes Delrooney. Amusingly, he doesn't even attempt to sound like a woman at all.
** Dana Hill (and her replacement Pat Musick) also count for the role of Charles. And E.G. Daily as Mambo.
* TheDanza: Ben Stein had a recurring role as a psychiatrist named...Ben Stein.
* HeyItsThatVoice:
** Duckman is George Costanza (Creator/JasonAlexander).
** Creator/GreggBerger (Cornfed) was Eeyore in ''Franchise/KingdomHearts'', [[WesternAnimation/TheTransformers Grimlock and Skyfire]] and also a straight pig to a less balanced duck in ''ComicStrip/USAcres'' and ''WesternAnimation/GarfieldAndFriends'' (Orson).
** King Chicken is Creator/TimCurry.
** Iggy Catalpa is [[WesternAnimation/DextersLaboratory Mandark]].
** [[WesternAnimation/{{Rugrats}} Tommy Pickles]] and [[WesternAnimation/ThePowerpuffGirls Buttercup]] is Mambo and [[WesternAnimation/GoofTroop Max Goof]] was Charles (until Dana Hill died while in a diabetic coma).
** Creator/BrianDoyleMurray (Creator/BillMurray's brother and former ''Series/SaturdayNightLive'' cast member and writer; better known as Captain K'nuckles on ''WesternANimation/TheMarvelousMisadventuresOfFlapjack'') as Agnes Delrooney, an escaped convict who looks just like Grandma-ma and posed as her for a time.
*** Creator/GilbertGottfried (another ''SNL'' cast member who was a cast member during the show's absymal sixth season, which coincidentally, was when Creator/BrianDoyleMurray was a writer) as Art Desalvo.
** [[TheNanny Mr. Sheffield]] as a few people, most notably the live-action version of Duckman in a TV-movie Duckman wrote himself.
** [[Series/TheAddamsFamily Gomez Addams]] as Terry Duke Tetsloff.
** A very young MaeWhitman plays the fake daughter of Tetsloff
** Dr. Fox, the psychiatrist who approaches and tries to help Duckman and the family in "Role with It", is [[WesternAnimation/SupermanTheAnimatedSeries Lois Lane]].
* PlayingAgainstType: Not a specific actor, but ''studio''; so this cartoon, a raunchy, crudely-drawn ''Simpsons'' clone that aired on USA Network, was brought to you by... [[Creator/KlaskyCsupo the same people]] who created the Nicktoons ''WesternAnimation/{{Rugrats}}'', ''WesternAnimation/TheWildThornberrys'' and ''WesternAnimation/AsToldByGinger''?!
* TheOtherDarrin: When Dana Hill (the original voice of Charles) died while in a diabetic coma, Pat Musick was hired to replace her.
* ScrewedByTheNetwork: While USA treated the first three seasons fairly well (even though it did air on Saturday evenings, which is when TV ratings aren't really sky-high), most of season 4 aired in the wee hours of the morning. Is it any surprise it was canceled after that?
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