These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
YMMV: The Goon Show
Hilarious in Hindsight: Jokes about how "that is why this show will never be televised" after a scene in which it's implied someone's naked, etc... the show was eventually televised, albeit with puppets.
This was, of course, an intentional parody of the original James Moriarty's name, but to be fair, nobody had ever seriously called him Jim until Sherlock.
Memetic Mutation: A pre-internet example - "Lurgi" remains a common British word for generic illness and is sometimes used by children instead of 'tag' in schoolyard games.
Once Acceptable Targets: There are jokes about singer and occasional guest cast member Ray Ellington being black that, while obviously made with his consent, tend to raise modern eyebrows - e.g. another character is blackened in a Harmless Explosion and is promptly mistaken for Ellington. Even at the time, the show was criticized for being anti-Semitic with regards to minor Jewish characters/bystanders such as show business agent Lew [ironically, Sellers, who was half-Jewish, usually played those roles].
And then there's Yakamoto in "Napoleon's Piano". "What's he do?" "Nothing, he's just here to lend colour to the scene."
"How on earth shall we defeat him?" "I've found a chink in his armour!" "Those Chinese get everywhere."