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.
One "As the Stomach Turns" skit gives an unfortunate double dose, the first being the storyline of Marian's only daughter having apparently been killed (said daughter in the sketch does return, having actually survived, but still...).
"Disaster '75" has Harvey Korman playing a bomber who can't find work because he "used to be in charge ofFriday nights on ABC", this reference having gone out-of-date when ABC introduced its famous TGIF lineup in 1989, ended it in 2000, revived the format in 2003, then ended it again in 2005, effectively recycling itself.