John Ritterdies unexpectedly on the set of 8 Simple Rules. He was 54.

Unfortunately John’s death came on the very day of his youngest daughter’s birthday, as well as the always remembered Sept 11 Terrorist Attacks.

IMDB Reports:

Emmy Award-winning actor John Ritter, who shot to instant fame as the wily and wacky Jack Tripper in ’70s TV hit Three’s Company, died unexpectedly Thursday after collapsing on the set of his ABC sitcom 8 Simple Rules for Dating My Teenage Daughter; he was 54. Ritter apparently suffered a tear in the aorta, which was the result of an unrecognized flaw in his heart, according to his publicist, Lisa Kasteler. Rushed to Providence St. Joseph Medical Center in Burbank, across from the studio where he had been working, Ritter died shortly after 10 p.m. Thursday.

More noted for his TV appearances, John Ritter did have some movie experience. See above post on my Hidden Gem report in tribute to Mr. Ritter