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.James Garner and David Spade later joined the main cast as Cate's father and nephew, Jim Egan and C. Barnes, in an attempt to fill the void left by Ritter.After three seasons, ABC cancelled 8 Simple Rules in May 2005 due to low ratings.
In mid-December 2012, 8 Simple Rules was removed from ABC Family's weekday line-up, only to be added back in September 2013.
On July 11, 2005 (less than two months after ABC officially cancelled it), The WB network announced it would air back-to-back repeats of all 76 episodes of 8 Simple Rules from 4–5 p.m.
as part of the replacement of Kids' WB with the more broad-audience Daytime WB block.
8 Simple Rules returned two months after Ritter's death with a one-hour episode, "Goodbye", which was turned into a tribute to Ritter's character.
Subsequent episodes dealt with the family's reaction to his death and how they moved on from it. Garner and Spade later received starring roles in order to fill the void left by Ritter for the remainder of the series' run.The first four post-Ritter episodes were shot without a live audience with James Garner and Suzanne Pleshette guest-starring as Cate's strict parents and David Spade guest-starring as Cate's wayward nephew, C. Before Ritter's death, 8 Simple Rules ranked 42nd in the Nielsen ratings.