Some ideas are so terribly conceived and badly executed that they're entertaining. This show celebrates the 'so bad they're good' moments in TV, commercials and movies. From Keanu Reeves in Bram Stoker's Dracula, to the BBC's 1978 contemporary black music show Blackcurrent; from flatulence-deodorising underpants, to a roaring shark in Jaws: The Revenge, David Walliams casts his eye and wit over the most remarkable onscreen moments ever seen.