John Ritter's best-remembered role? Depends on your age. Older fans will likely recall his hijinks as Jack Tripper on Three's Company. But by the time he died unexpectedly, days before his 55th birthday and in the same hospital in which he was born, a new generation of fans had come to know him from his new hit comedy, 8 Simple Rules.

As John Ritter: The E! True Hollywood Story reveals, friends, family and coworkers alike loved Ritter and adored working with him. The only real tragic element of his life was how it ended: with an aortic dissection. Hear directly from his famous costars and witness never-before-seen home movies of Ritter through the years.

And find out how one man and his comedic talents touched so many millions of people.

But first, just how much do you know about this Hollywood-raised actor? Take our quiz and see how you measure up.