This Collider feature rounds up television shows whose cancellations, unlike natural series finales or shows later revived, genuinely closed the book on a format, franchise or cultural moment. Writer Christine Persaud distinguishes these from cases like Futurama or American Idol, which ended and then returned, to focus on cancellations that permanently ended a concept or legacy, arguing that in each case the loss went beyond a single show to mark the close of an entire TV-watching era.

Among the eight examples, How I Met Your Father (2022–2023) is cited as ending the "how I met your parent" storytelling format after just two seasons, following on from the decade-long How I Met Your Mother. The Late Show with Stephen Colbert (2015–2026) is highlighted as more significant still, ending a CBS late-night lineage stretching back 22 years to David Letterman; its cancellation, reportedly with political undertones, leaves CBS without a late-night talk show for the first time since 1993 and means all three major US networks no longer air one simultaneously.