Sarah Doon Mackichan is a British actress, comedian and writer. She co-created, wrote and performed in the double-Emmy-award-winning Smack the Pony. She frequently collaborates with Armando Iannucci and Steve Coogan, having played multiple characters in The Day Today, Brass Eye and Alan Partridge, and has also appeared in Toast of London and Two Doors Down. Mackichan was nominated for Best Female Comedy Performance at the 2014 British Academy Television Awards for her performance in Plebs and won critical praise for her performance alongside John Malkovich in Bitter Wheat in 2019.

Smack the Pony is a British sketch comedy show that was originally broadcast between 1999 and 2003 on Channel 4. The main performers on the show were Fiona Allen, Doon Mackichan and Sally Phillips. There were also regular appearances from Sarah Alexander, Darren Boyd and Cavan Clerkin. The show's theme tune was a version of the Dusty Springfield song "In the Middle of Nowhere", sung by Jackie Clune. In addition to the three principal cast members, the show was written by many writers, the core of whom went on to write Green Wing and Campus.