Falling to 4th has to be almost certainly the #1 fan favorite top rated episode, Marge vs the Monorail
Mid 4th season, Hartman’s best guest star IMO, famously written by Conan, this is the first real “zany” episode of the show from what I remember with Homer, for some reason, becoming a monorail conductor. But everything just works and can really only be rivaled by last exit I think in terms of just nailing every moment of the episode. Batman is, in fact, a scientist.