Do famous people fare any better than ordinary mortals under interrogation by John Humphrys? Sir Tim Rice, Natalie Cassidy, Jeremy Edwards and Jeremy Beadle find out, answering questions on the solar system, Friends, Johnny Depp and London capital murders (1900-1940)

The respective specialist subjects of Monty Don, Diane Abbott, Phil Cornwell and Nicholas Owen are the Beatles, Jamaican politics, the Apollo space missions and railways of south-east England.

Andrew Castle is served men's Grand Slam tennis, Graeme Le Saux tackles the history of Jersey, Gina Yashere gets into lifts and Peter Tatchell opts for Malcolm X. With John Humphrys.

Diarmuid Gavin, Wendi Peters, Lembit Opik and Paul Ross are quizzed by John Humphrys on U2, Kander and Ebb musicals, Japanese motorcycles and Ezra Pound's life and work.

Sid Waddell opts for the history of rock 'n' roll 1955-65, Iain Banks tests his knowledge of malt whisky, Myleene Klass is quizzed on the third series of Sex and the City and Alistair McGowan aims to make a good impression with his specialist subject, the life and work of Erik Satie. With John Humphrys.