* {{Anvilicious}}: Particularly in the later seasons, nearly every episode took on a "cause" of some sort. Whether ghost surgery, advertising alcohol on TV, DrugsAreBad, or fraternity hazing, there was always some cause-of-the-week that the show tried to hammer home its message about as unsubtly as possible.
** It didn't help that Quincy (and in one episode ''Asten'') was not above delivering speeches about the subject.
* SeasonalRot: Quite a few people find the later seasons less enjoyable because of their tendency towards [[{{Anvilicious}} preachiness]].
* TheyWastedAPerfectlyGoodPlot: "What Happened To Morris Perlmutter?", in which a gripping murder mystery is inexplicably sidelined in favour of a PSA about the title character's hearing for almost the entire episode. (Why yes, this ''is'' [[SeasonalRot from the final season]], how'd you guess?)