Michael White on the art of political heckling. "On one occasion, Wilson was talking about his public expenditure plans when a heckler cried, "What about Vietnam?" - the burning issue of the day. "The government has no plans to increase public expenditure in Vietnam," rejoined Wilson. Heckler: "Rubbish!" Wilson: "I'll come to your special interest in a minute, sir."

Steve Bell, spot on as ever.