Angus Deayton finds contrasting attitudes towards love and marriage. In America he attends a divorce ceremony and meets a love coach; in Jamaica he witnesses a production line of happy couples; and in England he meets a happy triple - a woman who lives with her twin lovers.

Tonight Angus Deayton investigates pleasure. He meets a woman who runs a Tantric sex workshop in London, talks to a man in Colorado who smokes toad venom, enjoys a gourmet meal, and then drops in on a professional "couch potato" to consider whether happiness is really found "doing nothing at all".