 The chairman gives each team a convoluted punchline, to which they must improvise an equally convoluted joke.However, once the first team has started telling their joke, the chairman will sound his buzzer at random intervals; at this point, the second team must take over, steering the story towards "their" punchline... until the chairman sounds his buzzer and the first team once more takes over the story, and so on.The chairman identifies a special interest group and invites the panellists to suggest films or books that would be of interest to it.