3. Roseanne, Season 9 (ABC; September 17, 1996 - May 20, 1997)
If we asked you what you thought the worst thing you could do to a comedy about a working class family was, you'd probably say, "Have them win the lottery," right? Well, that's exactly what happened on season 9 of Roseanne.
Up to that point, Roseanne had followed the Connor family as they struggled to keep their family together through the hard times, as life threw them curveballs from unemployment to unplanned pregnancy. After all of that, the ninth season began with the Connor family hitting the lottery and becoming millionaires. Strangely, with all of their problems solved for them, the Connor clan ceased to be as fun as they had been when they were barely getting by and the show limped through a less-than-stellar series finale.