I’m not really thinking of someone like Kelsey Grammer playing Frasier Crane over and over again. More like, the actor Obba Babatundé who played Berry Gordy in The Temptations movie and also in Fresh Prince of Bel Air. Well, technically he was Gordy Berry in Fresh Prince, but close enough.
Are there any other people like that? I guess it might make more sense to focus on actors playing real people.