Plot: To mark the last in the series of Brand New Brainiac: Science Abuse, Vic Reeves and the team celebrate the most competitive day in the school calendar - Sports Day. Which national dress is the best outfit for swimming? Will it be the kilt and sporran of the Scots or the lederhosen of Germany? In Stuff Nasa Never Tried, Vic attempts to discover whether rockets can help you play football and Olympic silver medallist Iwan Thomas falls prey to Brainiac's top tips for cheating in a race