In this week's Arena, Gerald Scarfe takes a long, hard look at himself. In his paintings and drawings he mercilessly pillories the powerful and the famous, and yet in public he presents an image of docile sociability. In this irreverent investigation of his own personality Scarfe attempts to reconcile his two sides. He traces his progress from an asthmatic childhood, through his early days in 'Punch' and 'Private Eye', to the 'Sunday Times' - his days of reportage in Vietnam and electioneering travels with American presidents. He talks to Richard Ingrams, Peter Cook, Harold Evans and Roger Waters, and explores how his work has developed through sculpture, animation, films such as 'The Wall', rock and roll with Pink Floyd, theatre, and opera work.