!! Tropes found in the radio show:
* ArchiveBinge: The last 14 years of the show are up on the website.
* ArchivePanic: See above.
* EarWorm: 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.
* FollowTheLeader: It started off as an Upper Midwest, folk music-oriented take on ''The Grand Ole Opry'' before heading off in its own direction.
** On the flip side, ''TheVinylCafe'' clearly took inspiration from ''APHC'' but eventually evolved its own style. In the US, some public radio stations even air ''The Vinyl Cafe'' immediately following ''APHC''.
* HilariousInHindsight: 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.
* HoYay: Occasionally between Dusty and Lefty, the cowboys. They tend to say "my partner", which makes people think of [[HaveAGayOldTime the newer version of "partner"]].
* MemeticMutation: Keillor's red socks, invariably seen at the live shows. They're something of a personal trademark of his.
* MorePopularSpinoff: Keillor hosted the weekday morning show on Minnesota Public Radio starting in 1969. After writing an article about the Grand Ole Opry in ''TheNewYorker'' in 1974 he decided to try his own Saturday night live music variety show. He did both shows for a while, but the Saturday show was a big hit in Minnesota and became nationally syndicated, so Keillor quit doing the weekday show in 1982.
* NeverLiveItDown: The "Penguin Joke" became a RunningGag 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.

!! Tropes found in the film:
* AcceptableTargets: Texans, evidently.
* TearJerker: Oh, God, yes...not least because of the thought of one's favorite radio show closing forever...