S4·E1 Episode 1

In the return of a new series former MP Neil Hamilton goes in the electric chair, there's a search for the UK's fizziest drink, which is Britain’s loudest bang, which food stuff makes the best DIY shaving cream, a lucky viewer becomes Brainiac for a day, a Hollywood star pays a visit to the Brainiac lot, how many 360 degree turns can you do without falling over, Dr. Bunhead is at a service station near you, and get ready for the world series of Brainiac darts.