Paul Rankin, Sonali Shah, Omid Djalili, Hacker T Dog

John Humphrys hosts the first in a new series of festive specials as four famous faces brave the black chair. Chef Paul Rankin answers questions on Stieg Larsson's Millennium trilogy, presenter Sonali Shah on the human body, comedian Omid Djalili on Chelsea FC and CBBC's Hacker T Dog on Pet Shop Boys.