Few historical figures have made as much of an impact on the arts and popular culture as Napoleon Bonaparte, portrayed at times as a heroic visionary, and at others as comically short and bossy. But how does the Napoleon of novels, plays and films, compare with the real man? And how did he control his image and use the theatre for personal propaganda. Rob Weinberg talks to Dr. Clare Siviter, author of Tragedy and Nation in the Age of Napoleon.