What's a show that dedicates an entire episode with a supporting character/guest star while the normal lead cast have a much smaller role than usual?

Submitted ⁨⁨3⁩ ⁨weeks⁩ ago⁩ by ⁨bOt@zerobytes.monster⁩ to ⁨television@zerobytes.monster⁩

https://www.reddit.com/r/television/comments/1v0ev5g/whats_a_show_that_dedicates_an_entire_episode/