Andrew Graham-Dixon talks to ceramicist Grayson Perry, Simon Armitage marks National Poetry Day, Mark Kermode meets director Lynne Ramsay to discuss her latest film We Need to Talk About Kevin, and there's a look at the work of Gerhard Richter. Also, choreographer Akram Khan talks to Clemency Burton-Hill about his latest dancework and critic Michael Collins looks at representations of the working class on stage.