Peter Firth the film adaptation of "Equus". The film was only a moderate box-office success, but earned Firth a nomination for the Academy Award for Best Supporting Actor and a Golden Globe award in the same category. Further film work quickly followed, most notably Roman Polanski's "Tess" (1979). In May 1981, he appeared on Broadway again in Peter Shaffer's "Amadeus" as Wolfgang Amadeus Mozart, replacing Tim Curry. Shaffer had offered him the role in the original London production, but he was unavailable due to film commitments. Other film work has included roles in "Diamonds on Wheels" (1973); "When You Comin' Back, Red
Peter Shaffer Critics' Circle that year as well. His screenplay adaptation of the play was nominated for a Best Adapted Screenplay Oscar in 1977. Shaffer's play "Amadeus" won the Evening Standard Drama Award and the Theatre Critics' Award for its initial London production. Upon moving to Broadway, "Amadeus" won the 1981 Tony Award for Best Play. His screenplay adaptation of the play won the Best Adapted Screenplay Oscar as well as the Golden Globe Best Screenplay in 1984. Shaffer's play "Lettice and Lovage" was nominated for another Tony Award, and for her performance in it, Dame Maggie Smith won the Tony Award