8 Simple Rules (originally 8 Simple Rules for Dating My Teenage Daughter for the first season) is an American sitcom, originally starring John Ritter and Katey Sagal as middle-class parents Paul and Cate Hennessy raising a family of three.
While 8 Simple Rules ratings were well above those of the surrounding TGIF shows during its third season, ABC cancelled it due to the perceived inability to sell reruns of the show into syndication (a fourth season would have given the show the 100 episodes necessary to enter daily syndication).
The series' creator and showrunner, Tracy Gamble, left the series for a time over creative differences prior to the third season, but he later returned as a consulting producer midway through the third season. Even before the third-season finale's airing, rumors began circulating that 8 Simple Rules was facing cancellation due to Ritter's death and poor ratings.
Gamble was replaced by Judd Pillot and John Peaslee, who had performed the same role in the final season of Spade's sitcom, Just Shoot Me! The Friday night "death slot" ratings took their toll on 8 Simple Rules.
The series was shown on Irish channel RTÉ Two, then later, rights to the show were acquired by TG4, which aired the series weeknights at 5.35 pm.
The series was shown on both these channels full uncut, despite the fact it was shown pre-watershed (9.00 pm), although, the show was issued an age rating.