8 Simple Rules for Dating My Teenage Daughter (also known as 8 Simple Rules for the third and final season) is an American sitcom, originally starring John Ritter and Katey Sagal.
James Garner and David Spade joined the cast afterward.
ABC cancelled the series on May 17, 2005 after three seasons because of low ratings.
The show's premise and title were derived from the book 8 Simple Rules for Dating My Teenage Daughter: And other tips from a beleaguered father (not that any of them work) by W. The third season (after Ritter's death) took a creative turn, revolving more around cousin C. (David Spade) and grandfather Jim (James Garner), than the immediate Hennessy family, more specifically not revolving around the raising of the Hennessy girls.
After the novelty of newly added ensemble characters wore off, the series returned to its original format.
The first three episodes of the show's second season had been completed when Ritter reportedly suffered an un-diagnosed aortic dissection.