I know enjoyment of Uncle Ruckus's character has been frequently seen as a litmus test for enjoyment of racist black jokes.
Anyway, his episode recounting his tale of "revitiligo" was humorous and tragic, especially considering his two brothers ended up having white wives, successful careers, and got over their father's awful parenting, unlike Uncle Ruckus. I'm not one to use genius in a manner like that, but I thought it was a great episode.