- The bespoke multi-bladed razor head mould, to make shaving quicker: Not genius
- Placing prisoners on exercise bikes attached to the national power grid: Winning genius
- The science of opposites: Not genius Note: Tony and Stuart's website is www.oppo-site.com
- Dancing maths teachers to encourage greater numbers to study maths: Genius
(Ideas from the reject bin included painting stalkers so they glow-in-the dark; colouring in Frank Sinatra's blue eyes in his black-and-white films; two-in-one shampoo and conditioner; melon-flavoured cucumbers; comb-unders for men who can't grow a beard; and freezer magnets so fridges don't get all the glory)
Red Button Extras
- Extra idea - More masculine umbrellas: Not genius.
- The creators of the science of opposites return for some more experiments.