Whose Line Is It Anyway? originally premiered as a British radio program before moving to television, debuting on Channel 4 in the UK, hosted by Clive Anderson.
The American version of Whose Line Is It Anyway? premiered on ABC, hosted by Drew Carey, adapting the British format for U.S. audiences.
ABC ended the original American televised run of Whose Line Is It Anyway? after 8 seasons due to changes in programming direction.
The CW network revived Whose Line Is It Anyway? with new seasons hosted by Aisha Tyler, introducing the show to a new generation of fans.