Gaylene Gould reviews Precious, a hard-hitting drama about a black teenager living in Harlem. Film critic Mark Kermode discusses his new book, an account of a life defined by movies. Richard Cork reviews an exhibition by Turner Prize-winning artist Chris Ofili, which brings together his early works with newer paintings and drawings. TV producer Stephen Garrett, the man behind Spooks and Life on Mars, discusses taking on the role of Oxford University's News International Visiting Professor of Broadcast Media.