http://www.myadventures2008.blogspot.com has a nice Cass tribute. Love those clips with Julie Andrews.
My favorite Cass tv moment?
on the Carol Burnett show when Carol said something like, "Imagine, a baroness, referring to Cass, singing with a commoner" and Cass said, "Oh come on Carol, I'm just as common as you are". The way Cass delivered the line and the way Carol reacted is priceless. I watch that over and over.