Episode 11

Andrew Graham-Dixon visits the Velazquez exhibition at the National Gallery. Radiohead's Thom Yorke gives a rare and wide-ranging interview, while writer John Grisham talks about his book 'An Innocent Man'. South Park's creators, Matt Stone and Trey Parker, give a masterclass in how to cause maximum offence, and Gael Garcia Bernal talks to film critic Mark Kermode about the rise and rise of Mexican cinema.