* GermansLoveDavidHasselhoff: Has a fanbase in Latin America, thanks to airing on animation channel Locomotion.
* GrowingTheBeard: Arguably, the later half of season 3 is when the show really improved; the energy level was higher, the father/son tension between Dr. Katz and Ben was lessened, the improvised dialog was more tightly edited to produce the most laughs, and Laura periodically lightened up a bit. In her own way, of course.
* HarsherInHindsight:
** One of guest Jon Stewart's bits was how America needed a new enemy, now that communism isn't relevant. The episode in question was from 1996; only five years later, America would get an enemy in the form of Al Qaeda. And we can't forget about North Korea...
** Any of the SelfDeprecation jokes that John Pinette made about being fat stopped being as funny after he died of heart disease in 2014.
* HilariousInHindsight: One episode had Dr. Katz and his son humorously discussing horror movies where the killers were little people. [[spoiler: In 2009, Warner Brothers released ''Film/{{Orphan}}''.]]
** The last episode of the series concerned Dr. Katz noticing that Creator/ConanOBrien used his jokes in a monologue on his show. [[http://www.hollywoodreporter.com/thr-esq/conan-obrien-headed-trial-claims-stealing-jokes-1003727 Guess what happened in 2017?]]
** Jon Stewart had a bit about how the U.S. should make Canada its enemy. This is three years before such a thing was a plot point in ''WesternAnimation/SouthParkBiggerLongerAndUncut''.
* HoYay: Dom Irrera ''constantly'' hits on Katz.
* OlderThanTheyThink: A lot of the veteran comedians' material has been part of their act since the '80s. It's not uncommon to watch an old ''[[Series/TheTonightShowStarringJohnnyCarson Johnny Carson]]'' episode and see a comedian doing a routine that would be done in ''Dr. Katz'' ten years later.
* {{Padding}}: "Day Planner" ended up this way, largely because guest Rodney Dangerfield only gave the staff about three minutes of material to work with. This is why there are two other guest stars in the episode, to make up for the shortage of Rodney material.
* SpiritualSuccessor: With its largely improvised dialogue and conceit of comedians playing themselves, ''Dr. Katz'' definitely feels like the spiritual ''prede''cessor to ''Series/CurbYourEnthusiasm''.
** Comedy Central's ''Shorties Watching Shorties'' was basically the same premise: Animating the audio of stand-up routines. It was produced by a different company, though, and was animated in Flash instead of Squigglevision.
** ''WesternAnimation/HomeMovies'' became its true spiritual successor, since they're both dialogue-heavy cartoons with very limited animation that both happened to be produced by the same company with most of the same crew.
* UnintentionalPeriodPiece:
** Aside from Todd the video store clerk, computers are scarce: In an early episode, Dr. Katz announces to Laura that the office will be upgrading to a computerized filing system, but nothing ever seems to come of it. In another episode, Dr. Katz also mentions that he has a computer while talking to guest Marc Maron, but it's never shown on-screen.
** In "The Particle Board", Marc Maron complains about how his friend is always trying to get him on the internet. This was in 1996. The whole idea of being reluctant to use the internet seems laughable today.
** Also [[ZigzaggedTrope zig zagged]] with the comedians who guest star. Many of them are still well known today [[note]] Jon Stewart, Marc Maron, Jim Gaffigan, Joy Behar, Tom Kenny (especially for a [[WesternAnimation/SpongeBobSquarePants series that came out]], Louis CK, etc.[[/note]] but some are no longer alive [[note]] Mitch Hedberg, John Pinette, Robert Schimmel, Gilbert Gottfried, Gary Shandling. [[/note]] and some are simply obscure [[note]] Has anyone heard of Tom Agna? Or James Leemer, who doesn't even have a profile image on Behind the Voice Actors?[[/note]]
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