The late comedian John Ritter certainly left a mark on his television family.
Kaley Cuoco took to Instagram to honor the sitcom star, who died of an aortic dissection 15 years ago today. Long before she was known as Penny on The Big Bang Theory, Cuoco was Bridget Hennessy, daughter of Paul Hennessy, the dad of all dads who Ritter played effortlessly for one and a half season of 8 Simple Rules.
The actress marked the anniversary of Ritter's passing with a picture of herself planting a sweet kiss on the late actor's star on the Hollywood Walk of Fame.
"15 years .. love you forever, John! #johnritter you still make me laugh every single day," captioned Cuoco.
The actor, best known for his role on Three's Company, passed away at age 54 while filming Season 2 of 8 Simple Rules. The family sitcom, which ran for a total of three seasons on ABC, ultimately killed off Ritter's character with a sudden car crash. 8 Simple Rules also starred Katey Sagal as Paul's wife, with Amy Davidson and Martin Spanjers rounding out the cast as the couple's angsty middle child and empty-headed son, respectively.