Dave Gorman Genius

In a quest to unearth a genius idea, Dave Gorman, with the help of special guests Johnny Vegas, Armando Iannucci, Chris Addison, Brian Sewell, Carol Vorderman and Sid Waddell pore over a pot pourri of plots, plans, inventions and scams sent in by Radio 4 listeners. Will they unearth some genuine gems of genius?