* BaseBreakingCharacter: Mr. Furley definitely has his fans, with some even adoring him more than the Ropers. However, some think the character is the catalyst to the show's SeasonalRot. Others don't mind the character himself, and Don Knotts' performance, but find him out-of-place in the show.
* EarWorm: "Come and knock on our door..."
* FanPreferredCouple: Many fans over the years have expressed disappointment that Jack and Janet didn't get together in the end.
* HollywoodDateless: A mild example. It's strange when Janet complains about not having a date for the evening. She dates frequently but doesn't have a steady boyfriend through most of the series.
* IdiotPlot: See WhatAnIdiot below, and also its tendency to make plots based off stuff from the MistakenForIndex.
* ReplacementScrappy: Cindy, Chrissy's cousin, was almost a carbon clone with considerably less jiggle factor and the added annoyance of being TheKlutz. Terri managed to avoid this fate by actually having a brain.
* RetroactiveRecognition:
** Actors who appeared on this show before gaining more notable work include Loni Anderson, Lauri Hendler, Joanna Kerns, John Larroquette, and Anne Schedeen.
** In addition to their work on ''Series/ThreesCompany'', developers and executive producers Don Nicholl, Michael Ross, and Bernie West are also best known as creators and executive producers of ''Series/TheJeffersons''.
*** Don Nicholl is still well-known in the screenwriting community today, but not exactly for his writing. After he died in 1980, his widow Gee established the Nicholl Fellowships in Screenwriting in his memory. Now administered by the [[UsefulNotes/AcademyAward Academy of Motion Picture Arts and Sciences]], it's far and away the most prestigious annual competition for amateur screenwriters.
** David Mirkin wrote seven episodes. Mirkin is best known as co-creator and co-executive producer of ''Series/GetALife''.
** Roger Shulman and John Baskin wrote four episodes and served as producers. Both are best known as creators and executive producers of ''Series/CrazyLikeAFox''.
** John Boni wrote three episodes. Boni is best known for co-creating ''Series/WhenThingsWereRotten''.
** Neal Marlens wrote two episodes. Marlens is best known as creator and executive producer of ''Series/GrowingPains'' and co-creator and co-executive producer of ''Series/TheWonderYears'' and ''Series/{{Ellen}}''.
** Joyce Burditt wrote an episode. Burditt is best known for creating ''Series/DiagnosisMurder''.
** Howard Gewirtz also wrote an episode. Gewirtz is best known as creator and executive producer of ''Series/OliverBeene''.
** Mark Fink also wrote an episode. Fink is best known as co-creator and executive producer of ''Series/HangTime''.
** Prudence Fraser and Robert Sternin also wrote an episode. Both are best known as creators and executive producers of ''Series/TheCharmings'' and developers and executive producers of ''Series/TheNanny''.
* SeasonalRot: The first three seasons with the original cast lineup are the most remembered, but season four (the first with Mr. Furley) has its fans as well. After Suzanne Somers left, the show's quality got progressively worse, with lazier writing and many recycled plots, and the characters Cindy and Terri being far less memorable than Chrissy.
* TearJerker: Mr. Furley recounting how he once had a pet as a kid, but it was hit by a car and died, he then decides to name the cat he found after it.
* ValuesDissonance: The gay jokes on the show are a little hard to watch through a modern lens.
* WhatAnIdiot: This will apply to at least one character OnceAnEpisode.
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