Sagal, who starred as Ritter's on-screen wife on hit TV show 8 Simple Rules... For Dating My Teenage Daughter, appeared briefly at Glendale's Superior Court to testify on behalf of Ritter's widow, Amy Yasbeck. She is hoping to prove the late actor's death could have been avoided if doctors at the Providence Street Joseph Medical Center hadn't misdiagnosed the star's heart condition.
Paying tribute to his dad, Jason said: "It was a great and intense relationship. He was so much fun. I learned a lot from him. He was a great father and a great teacher."
Before Tuesday's court proceedings began, the jury members were introduced to Ritter's young daughter Stella, whose father suffered a fatal heart attack in September 2003, aged 54, on her fifth birthday.
The trial continues.
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