Jason Ritter opened up to PEOPLE about rewatching some of his dad John Ritter's old performances. John died in 2003 at age 54.

Ritter died on Sept. 11, 2003, days before his 55th birthday, of a “dissection of the aorta" Three's Company fans can honor Ritter and support The John Ritter Foundation for Aortic Health with a ...

Actress Kaley Cuoco is sharing an important acting lesson her late 8 Simple Rules... for Dating My Teenage Daughter co-star and on-screen father, John Ritter, taught her. Cuoco spoke about Ritter, who ...

Ritter passed away in 2003 from aortic dissection. His widow, Amy Yasbeck (Wings), has championed the foundation for years, saving lives in the process.