Elf Lyons judges suggestions from QI elf Stevyn Colgan and Dr. Joe Latimer with Simon Watt keeping tabs on everybody as best he can. The panel discuss smart bacteria, sentient suitcases and what the 'G' in G-spot stands for. At one point, if you listen carefully, you can hear Simon suggest he's going to do something obscene to a yoghurt.
Theme music written and performed by Laurence Owen. Graphics by Theo Weedon, web design by Ian Bridgeman and support from the Wellcome Trust. The producer is Rachel Wheeley.