https://www.youtube.com/watch?v=qzY3EaJTuJk /covertly trying to spread the show whenever possible/
https://www.youtube.com/watch?v=6zEh3LpFbY8 - From The Devil is a Part-Timer. I remember either an ending or OP that I really liked, too, but that was at least in part due to the animation sequence associated with it and I'd have to look harder to find it.
And I think this OP has a fair amount of recognition among watchers, but Showa Genroku Rakugo Shinju itself doesn't have a very wide audience -- or I would guess it doesn't, based on the topic of the show -- so
https://www.youtube.com/watch?v=K28Lcc-MdJs.
