Mitch Benn, Reeta Chakrabarti, Mark Rhodes, Alistair Brownlee

John Humphrys asks the questions as four famous faces brave the black chair. Mitch Benn answers questions on Peter Cook, BBC News presenter Reeta Chakrabarti on the life and poetry of John Keats, one half of Sam and Mark, Mark Rhodes, on the World Wrestling Federation and double Olympic triathlon gold medallist Alistair Brownlee on the Yorkshire Dales.