A growing number of psychiatrists and patients are turning their backs on traditional concepts of mental illness. They are asking: Who is mad? What is madness? Many believe that big psychiatric hospitals, like Middlewood Hospital in Sheffield - the subject of last week's Man Alive - are not the answer. This week Gordon Snell talks to the people who are working inside and outside the National Health Service to find new ways of treating patients and to those who are going out into the community to tackle people's problems in their homes.