Bruce posted a fine testament to Jack Parrish on the Barksdale blog.
I will only add one thing: an actor asked me a couple of years ago for my thoughts about his performance. He was playing the character of a king. I told him he did a fine job but, for an actor to give a really great portrayal of a king, he must project regal power with every action. The audience must feel not like they are watching a performance but they are actually in the presense of royalty. More than any other actor I ever saw, Jack could project royalty, but not by sacrificing humanity. It was always thrilling to watch him. Rest in peace, Jack.