Plot: John Humphrys asks the questions as four famous faces go under the spotlight and brave the black chair in another episode of the classic quiz, donating to their chosen charities. Comedian Marcus Brigstocke, TV and radio presenter Vick Hope, Briony May Williams from Food Unwrapped and Siobhán McSweeney from Derry Girls answer questions on Pink Floyd, giraffes, 90s & 00s boy bands and Gene Wilder