Contrary to popular myth, the Cook perennial "One Leg Too Few", a classic sketch about a one-legged actor applying for the role of Tarzan, which had been written by Cook when he was 18 years old and used in Beyond the Fringe, never appeared on the BBC Not Only..
A 1971 visit to Australia for the live show "Behind the Fridge" (the name was a pun on "Beyond the Fringe") saw Cook and Moore record two half hour Not Only..