John Ritter, unlikely TV comeback king, died suddenly yesterday on the set of his new TV show. Mr. Ritter was possibly the uncoolest celebrity of all time, although his hit 70s show, Three's Company, was rated in our informal poll as one of the two greatest guilty pleasures of aging 20-somethings in Brooklyn — second only to 80s sitcom Small Wonder.

Eerily enough, country singer Johnny Cash, a man so cool that he may truthfully be called the anti-Ritter, died within a few hours of Mr. Ritter.
John Ritter, Prolific Television Actor, Dies at 54 [NYT]
Johnny Cash, Singer Known as 'The Man in Black,' Dies at 71 [NYT]