Comedian Rich Hall goes west to find out what killed off that most quintessentially American of all film genres, the western. Through films such as The Searchers, The Man Who Shot Liberty Valence, Little Big Man, The Wild Bunch and Unforgiven, Rich charts the rise and fall of America's obsession with its own creation myth - the Wild West. He explores how the image of the cowboy as a moral, straight-talking heroic figure was created by Hollywood but appropriated by Washington, as one president after another sought to associate themselves with this potent symbol of strength and valour.

• Documentary