- Series 1
- s01e01 - 2003-08-28
- s01e02 - 2003-09-04
- s01e03 - 2003-09-11
- s01e04 - 2003-09-18
- s01e05 - 2003-09-25
- s01e06 - 2003-10-02
- Series 2
- s02e01 - 2005-02-10
- s02e02 - 2005-02-17
- s02e03 - 2005-02-24
- s02e04 - 2005-03-03
- s02e05 - 2005-03-10
- s02e06 - 2005-03-17
- Series 3
- s03e01 - 2007-05-24
- s03e02 - 2007-05-31
- s03e03 - 2007-06-07
- s03e04 - 2007-06-14
- The mystical power of the Xin warrior, a very seedy fox, and an inner-city slum in the countryside.
- s03e05 - 2007-06-21
- s03e06 - 2007-06-28
- The quest for the world's most ornate object, what really happens in the stock market, and live updates from the Office Olympics.
- Series 4
- s04e01 - 2009-08-25
- How to talk to an emperor and inventing Saturday night TV shows.
- s04e02 - 2009-09-01
- "Make Me a Celebrity Centaur", an exciting new reality show that features cutting edge surgery and some horses.
- s04e03 - 2009-09-08
- Who will succeed Zorro? Can pensioners understand the futures trade?
- s04e04 - 2009-09-15
- A visit to Britain's only sanctuary for balloon animals.
- s04e05 - 2009-09-22
- A date with a slightly disappointing superhero, and the perils of compulsory workplace drinking.
- s04e06 - 2009-09-29
- Revealing the new yoghurt for women, and introducing Britain's top police tortoise.
- Series 5
- s05e01 - 2013-11-26
- Thomas Hardy's exciting idea to make his books even sadder.
- s05e02 - 2013-12-03
- The real point of owning a cat, and a culture clash at the Proms.
- s05e03 - 2013-12-10
- Pedantic "Gardener's Question Time", and an enchanted stationery cupboard.
- s05e04 - 2013-12-17
- A horror story for slugs and inventing the world's first horseless staircase.
- s05e05 - 2013-12-24 - This episode was not broadcast on the stated date, and I can find no evidence that it ever was.
- Bonus material from the fifth series.