* AdoredByTheNetwork: Creator/{{Nickelodeon}} and by extension Creator/NickAtNite regularly reran the series (from season 4 onward) quite frequently from 1984 going into 1996. It’s very telling of its popularity that Lassie was the ONLY Nickelodeon-acquired program to be released under the Nickelodeon Video label through Sony Wonder.
* BeamMeUpScotty: For all of the other trouble he got into, [[TimmyInAWell Timmy never did fall down a well]]. ''Other'' people did fall into wells, however. In [=S1E24=] (aptly titled "The Well", when Lassie was owned by Jeff, not Timmy), a corrupt water-company owner fell into a well; his mother and grandfather didn't intuit the situation from Lassie's barking - Jeff wrote a note and attached it to his collar. In [=S4Ep37=] ("The Crow"), Timmy's great-uncle Petrie fell into a well; but instead of Lassie fetching humans, ''Lassie'' is fetched by, of all things, a crow, and lowered a rope into the well all by herself. And much later in the series, in Season 10, Lassie herself fell down a well.
* ChannelHop: Moved from Creator/{{CBS}} to syndication in 1971.
* MissingEpisode: One episode in which Timmy comes across a fallen satellite and is exposed to radiation wasn't shown originally due to a widespread radiation fears at the time. It was eventually aired much later.
* TheOtherDarrin: The various Lassies; and among the human cast, the actors playing Timmy's adoptive parents were both replaced after one season.
* ThePeteBest: The third dog to play Lassie, Spook, was quickly replaced by his littermate Baby when it became clear he didn’t have much screen presence, and is typically not included in official cast lists.
* PetFadStarter: Collies rose in demand after the show aired, leading to the spread of unhealthy and inbred dogs. Many people blame this for the health problems the breed has today.
* ScrewedByTheNetwork: The show was one of the casualties of UsefulNotes/TheRuralPurge. Like fellow victims ''Series/HeeHaw'' and ''[[Music/LawrenceWelk The Lawrence Welk Show]]'', ''Lassie'' moved into syndication, but unlike those other shows it only lasted a couple more seasons.
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