Leaning towards Bob Dishy as Sgt. Wilson. Like his quirks and the way he may get under Columbo's skin at times but still helps him with is knowledge of latest techniques,etc.
Still can't remember about why his first name changed. I know there was a post a while back i'll have to look for.
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.