QI XL - Season 4

Stephen Fry hosts the mind-expanding quiz in which the aim is to be interesting. Stephen plays I-Spy with Sandi Toksvig, Lee Mack, Jimmy Carr and Alan Davies.

Stephen Fry hosts the mind-expanding quiz in which the aim is to be interesting. Stephen asks unanswerable questions with an international flavour. With Jack Dee, David Mitchell, Bill Bailey and Alan Davies.

Stephen Fry investigates an imbroglio of issues with John Bishop, Frank Skinner, Sean Lock and Alan Davies.

Stephen Fry comes over all indecisive. With Phill Jupitus, Rich Hall, Jimmy Carr and Alan Davies.

Stephen Fry looks at insects and other invertebrates. With Sarah Millican, Jimmy Carr, Johnny Vegas and Alan Davies.

Stephen Fry waxes inventive with Nina Conti, Sean Lock, Bill Bailey and Alan Davies.

Stephen Fry considers some incomprehensible questions with Sue Perkins, Ross Noble, Professor Brian Cox and Alan Davies.

Stephen Fry addresses inequality and injustice with Sandi Toksvig, Clive Anderson, Henning Wehn and Alan Davies.

Stephen Fry investigates illness with Jo Brand, Ben Goldacre, Andy Hamilton and Alan Davies.

Stephen Fry asks some taxing questions about things that start with I, with Sandi Toksvig, Al Murray, Dara O'Briain and Alan Davies.

Stephen Fry comes over all infantile with Ronni Ancona, Dave Gorman, Lee Mack and Alan Davies.

Stephen Fry casts light on the subject of illumination. With Jack Dee, Chris Addison, Rich Hall and Alan Davies.

Stephen Fry asks some intelligent questions. With Jo Brand, David Mitchell, Phill Jupitus and Alan Davies.

In a special Christmas edition of the quiz where points are awarded for quite interesting answers, Stephen Fry is joined by Ross Noble, Sean Lock, Brian Blessed and Alan Davies.

In a special edition of the quiz for the Cultural Olympiad, Stephen Fry investigates the Immortal Bard with Sue Perkins, Bill Bailey, David Mitchell and Alan Davies.

Stephen Fry takes a lazy look at idleness with Ross Noble, Dara Ó Briain, Jeremy Clarkson and Alan Davies.