Gish occasionally appeared in films, her most notable performances being in A Day in the Death of Joe Egg (1972), Hitler: The Last Ten Days (1973), the Merchant-Ivory film Quartet (1981), Merisairas (1996), and as Mrs Norris in Jane Austen's Mansfield Park (1999). She is also known for her appearance as Rachel Ellenstein in the 1986 film Highlander and its 2000 sequel Highlander: Endgame.