Couples was a game exclusive to the British edition of Whose Line Is It Anyway. It was heard a few times on the Radio show, then seen twice during the first season, and never seen again.
This game can be described as a hybrid between Characters and Film and Theatre Styles. Two people were given a scene and then Clive would periodically buzz in with suggestions of couples (such as Fred Flintstone and Barney Rubble, or Prince Charles and Princess Di), to which the performers would continue the scene in.
What made this game great was that it gave the impressionists a chance to shine. Rory Bremner and John Sessions played one round of this game and John and Enn Reitel played another. This game more likely than not could have been played more if impressions didn't become a novelty factor on the show.