Peter O'Shaughnessy developed considerably. In September 1957, he staged the first Australian production of Samuel Beckett's "Waiting for Godot" at the Arrow Theatre in Melbourne with himself as Vladimir and Humphries as Estragon. It proved a hit with both audiences and critics. The critic of the Melbourne "Sun" wrote "so engrossing and well-done is this extraordinary adventure by Samuel Beckett regimented by Peter O'Shaughnessy's tender care that for me the evening passed by on wings". Later in the same year, O'Shaughnessy planned a production of George Bernard Shaw's "Pygmalion" for December, in tandem with a children's play to be performed at matinees.
Samuel Beckett Days" (1961). These plays—which are often considered, rightly or wrongly, to have been instrumental in the so-called "Theatre of the Absurd"—deal in a darkly humorous way with themes similar to those of the roughly contemporary existentialist thinkers. The term "Theatre of the Absurd" was coined by Martin Esslin in a book of the same name; Beckett and "Godot" were centerpieces of the book. Esslin argued these plays were the fulfilment of Albert Camus's concept of "the absurd"; this is one reason Beckett is often falsely labeled as an existentialist (this is based on the assumption that Camus was an existentialist,