In half an hour, the artist host would produce a finished product that could hang on any wall. Oh, it wasn't "great art" or any thing. You could tell that. I mean, the dude wasn't starving, or trying to make a "statement" or anything like that. They just wanted to finish a good painting in a brief period of time. What was on that easel at the end of 30 minutes could hang on anyone's wall, however, and draw compliments. It was magic!
I've no idea how many aspiring artists/hobbyists these folks inspired--or scared away--over the years, but they could easily instill a feeling of incompetence in someone just starting out. It would be like watching Harlon Ellison write a Nebula winning novel in one week--while sitting in a store front window. Or Isaac Asimov write a Hugo winning short story--on the table cloth while waiting for after dinner coffee to be served. Guaranteed to produce a life-time case of writer's block in a novice.
Bob Ross one one of those.

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