The much-loved actor and comedian Pat Shortt take a nose around the RTE archives to see what gems he can discover. On tonight's show, he looks at how the general public have been unwitting participants in entertainment programming, as Mike Murphy's initial foray into the everyday lives of an unsuspecting public proved on his Candid Camera capers in the late 1970s. A more recent example, PJ Gallagher's escapades on Naked camera, also features.