Series A
1. Adam
First broadcast: Thursday 11th September 2003
With John Sessions, Danny Baker and Hugh Laurie.
2. Astronomy
First broadcast: Thursday 18th September 2003
With Bill Bailey, Rich Hall and Jeremy Hardy.
3. Aquatic Animals
First broadcast: Thursday 25th September 2003
With Clive Anderson, Meera Syal and Bill Bailey.
5. Advertising
First broadcast: Thursday 9th October 2003
With Rob Brydon, Gyles Brandreth and Rich Hall.
6. Antidotes
First broadcast: Thursday 16th October 2003
With Howard Goodall, Jo Brand and Danny Baker.
7. Arthropods
First broadcast: Thursday 23rd October 2003
With Jimmy Carr, Jackie Clune and Jo Brand.
8. Albania
First broadcast: Thursday 30th October 2003
With Linda Smith, Sean Lock and Clive Anderson.
9. Antelopes
First broadcast: Thursday 6th November 2003
With Dave Gorman, Jeremy Hardy and Jo Brand.
10. Aviation
First broadcast: Thursday 13th November 2003
With Julia Morris, Peter Serafinowicz and Rich Hall.
11. Arts
First broadcast: Thursday 20th November 2003
With Richard E. Grant, Bill Bailey and Linda Smith.
Christmas Special: Advent
First broadcast: Tuesday 23rd December 2003
With Phill Jupitus, Sean Lock and John Sessions.