S5·E4 Episode 4

As Britain's biggest exhibition of Velazquez's work opens at the National Gallery in London, host Lauren Laverne is taken on a guided tour by art critic Andrew Graham-Dixon to examine the work of the Spanish painter. Plus Mark Kermode asks actor Gael Garcia Bernal about the rise in popularity of Mexican cinema, author John Grisham talks about his new book An Innocent Man, Radiohead's Thom Yorke discusses his turbulent relationship with the press, South Park creators Matt Stone and Trey Parker give a masterclass on how to cause offence, and the search for Britain's greatest living icon continues.