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 Simpsons S 6 E 4 Itchy And Scratchy Land
Hilarious in Hindsight: John Travolta is reduced to working as a bartender (whom Marge thinks is an actor who's dressed like him as part of the disco theme) at Itchy's '70s Disco. This episode first aired the same year that Pulp Fiction, which single-handedly resurrected Travolta's career, hit the big screen.
Memetic Mutation and Defictionalization: The name "Bort" being seen on those "personalized" keychain souvenirs have become popular at Universal Studios (and yes, they have sold out a lot).