This week's guest expert: Roger Taylor from Queen. In this first zany battle of vaguely scientific minds, three out of four contestants will be drained of all their power - and evaporated by Kenny's scrungeatron. The one survivor will be the first Brainstorm champion!

The science power game with Kenny Everett assisted by Cleo Rocos Tonight's guest expert Mary Archer Can last week's Brainstorm champion hold on to the title? Or will he be drained of all his power and evaporated horribly?

How many brains has a leech? Find out tonight as four intrepid Brainstormers try to avoid death by power drain to become this week's champion.

Watch the watts mount up as the Brainstormers win power - and then see who survives the 'brain drain' to be this week's champion.

Bill Carlton is this week's special guest. Watch Kenny get stretched and the Brainstormers get evaporated in another vaguely scientific knee-knocking game of hilarious efforts to avoid the 'scrungetron'.

The only quiz where you need to know if mice really like cheese, in order to gain power; and where the losers are evaporated in a puff of smoke.

This week's special guest is Sarah Greene. Who will survive the power drain and evaporation by Kenny's laser to become the final Brainstorm champion of the series?