Kirsty Young's castaway is the American comedian Jackie Mason.
His one-man shows have been pulling in audiences for more than fifty years. Like his father, grandfather and great-grandfather before him, he trained initially as a rabbi - and quickly acquired a reputation for being very funny.
"The people who heard my sermons kept saying to me; 'Rabbi, why aren't you a comedian?' I said to myself, maybe I should take the hint."
Producer: Leanne Buckle.