And the worst commercial of any, bar none, is the dramatized doctor-pitchman in a white medical coat who juggles test tubes and ponderously exhorts you to do what his “patients” do. Perhaps this is the natural evolution of the old traveling snake-oil shows, but then, at least, the hucksters did sleight of hand and a few buck-and-wings before launching into the pitch.

Rod Serling (1924-1975) American screenwriter, playwright, television producer, narrator
Patterns, Introduction (1957)