#2: 8 SIMPLE RULES FOR DATING MY TEENAGE DAUGHTER | 2002 – 2005
With John Ritter (formerly of Three’s Company) and Katey Segal (formerly of Married… With Children) leading the cast, the show found an audience by the end of its first season and got renewed. While taping the second season, however, Ritter suffered from an aortic dissection — a tear in the inner layer of the aorta — and died unexpectedly. Instead of pulling the plug, the show’s producers renamed it 8 Simple Rules and added David Spade and James Garner to the cast. After being moved to a dreaded Friday-night time slot, the show finally ended after its third season.
#1: THAT ’70s SHOW | 1998 – 2006
Yes, it was seriously on for that many years. But after the seventh season, Topher Grace left to pursue a movie career and Ashton Kutcher appeared in only five episodes. In an attempt to inject new blood into the struggling (and by this time, boring) sitcom, Donna (Laura Prepton) began dating smarmy record store clerk Randy Pearson (Josh Meyers), and Hyde (Danny Masterson) married a stripper. Unfortunately, it wasn’t as hilarious as it sounds. Grace and Kutcher returned for the series finale, but Grace’s role was so minor he wasn’t even credited.