QI

The world's most impossible quiz. STEPHEN FRY explains to ALAN DAVIES, BILL BAILEY, LINDA SMITH and RICHARD E. GRANT why Aristarchus of Samos was Quite Interesting. This week: Apples, Afghanistan, Ants and Alexander Graham Bell

The world's most impossible quiz. STEPHEN FRY organises ALAN DAVIES, JULIA MORRIS, PETER SERAFINOWICZ and RICH HALL into a Quite Interesting crocodileThis week: Air-rage and Alans.

The world's most impossible quiz. STEPHEN FRY hectors ALAN DAVIES, JO BRAND, DAVE GORMAN and JEREMY HARDY in a Quite Interesting harangue. This week: Antelopes, Artists and Alexander and Alfred the Great.

The world’s most impossible quiz. STEPHEN FRY toughs up ALAN DAVIES, LINDA SMITH, SEAN LOCK and CLIVE ANDERSON behind the Quite Interesting bike sheds. This week: Anchovies, Albania, Anatomy and Athletics.

The world's most impossible quiz. Quite Interestingly, STEPHEN FRY throws the blackboard rubber at ALAN DAVIES, JO BRAND, JACKIE CLUNE and JIMMY CARRThis week: Australia, Anthropology, Apes and Arthropods.

The world's most impossible quiz. ALAN DAVIES, JO BRAND, HOWARD GOODALL and DANNY BAKER completely fail to help STEPHEN FRY with his Quite Interesting inquiries. This week: Angels, Acres, Arcturus, Antidotes, Amphibians, Alsatians and Armies.

The world's most impossible quiz. STEPHEN FRY rigourously pumps ALAN DAVIES, ROB BRYDON, GYLES BRANDRETH and RICH HALL with Quite Interesting results. This week: Advertising, Africa, Aristotle and Alcoholics.

The world's most impossible quiz. STEPHEN FRY crass-questions ALAN DAVIES, JO BRAND, HOWARD GOODALL and JEREMY HARDY in a Quite Interesting manner. This week: Air, Argentina, Atomic physics and Anne of Cleves.

The world's most impossible quiz. STEPHEN FRY deftly examines ALAN DAVIES, BILL BAILEY, MEERA SYAL and CLIVE ANDERSON in Quite Interesting areas. This week: Afghanistan, Antarctica, Aquatic Creatures and Andersons.

The world's most impossible quiz. STEPHEN FRY saucily grills ALAN DAVIES, RICH HALL, JEREMY HARDY and BILL BAILEY with Quite Interesting ingredients. This week: Alligators, Astronomy, Asia and Aisles.

The world's most impossible quiz. STEPHEN FRY orally probes ALAN DAVIES, HUGH LAURIE, JOHN SESSIONS and DANNY BAKER with Quite Interesting stuff. This week: Anteaters, Artichokes, Ancient Greece and Adam & Eve.