Cool! I never heard of the reason and would be interested in reading about it.
I always enjoyed Bob Dishy, too, although his "investigatory procedures do differ somewhat from the Lt." Every time I see him on Law & Order I can't help but think of Sgt. Wilson.
I have to go with Bruce Kirby. He also played a good role as the TV repairman on make me a perfect murder.
"Your dog will love it."
I'm a little surprised Dennis Dugan as "Mac" hasn't been mentioned. Of course, that episode doesn't get a lot of affection, but I don't think much of that is due to him.