The first Improvisation Show. It featured Clive Anderson as the host and four contestants who had to improvise through various games using suggestions from the audience. Points were awarded as Clive saw fit (references to his lack of hair and neck often resulted in negative points). Common games included Party Quirks, World's Worst, Props, Hats, Press Conference, The Shopping Show, Sound Effects, and Alphabet, Scenes from the Hat, Foreign Film, Ho-down along with lots of others. The prize for winning was to read the credits in a style chosen by Clive.
The real Whose Line is it Anyway? was made by Hat Trick Productions for Channel 4 not the BBC. My favorite contestants were Colin Mochrie, Ryan Stiles, Mike McShane, and Josie Lawrence.