French post-Impressionist Henri Rousseau painted one of Rolf Harris's favourite paintings, Tiger in a Tropical Storm (also known as Surprised!). A behind-the-scenes look at it in the National Gallery dispels the view that Rousseau's work is simplistic and, in fact, reveals how complex it is and that the artist took risks. Rolf attempts his own version of a jungle scene and finds he needs a pantograph - a piece of equipment he hasn't used since his childhood. Show less