The Picasso? I guess the icon's a design icon - I just love the proportions of the thing, as if someone thought "Well, we need a new tuning signal. It doesn't have to be a full-featured testcard, so let's come up with something a little unusual which still provides basic test patterns". It's a thing of beauty, insofar as a test slide can be such a thing.
I just googled to try and find out more about the duct-vs-Duck-vs-gaffer-tape thing. Apparently, gaffer tape is a subset of duct tape or something and I'm now extremely confused, and got distracted by reading this page
about medical uses for the stuff and, er, what was the question again?