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: A Prairie Home Companion
Tropes found in the radio show:
Archive Binge: The last 14 years of the show are up on the website.
Ear Worm: The Powdermilk theme, but also the saxophone-and-piano number that opens Guy Noir, and the theme song itself—so recognizable that people in the audience cheer at the very first note.
Hilarious in Hindsight: Garrison Keillor's "I'm A Lutheran", from the 1990s, makes a lot of jokes about Episcopalians and how Garrison likes Lutherans more, Garrison Keillor is one of them (an Episcopalian) now.
Never Live It Down: The "Penguin Joke" became a Running Gag because the first time Garrison Keillor tried to tell it on the air, he badly flubbed the delivery. They've been repeating his mistake word-for-word ever since.