93. Three's Company
Yes, the show's trademark innuendo and misunderstandings could be funny, but what makes the show inherently funny is that the situation driving this situational comedy was a landlord who was tolerant of a gay man but not unmarried cohabitation. Was there really a point in American culture when this was plausible? See also 70's, Sitcom.
Sort of like ALF, but with Sasquatches and John Lithgow. See also 80's.