Tony Award nomination for her performance as Beatrice, and costar Derek Jacobi won the award for his Benedick. The production of Cyrano de Bergerac was later filmed in 1985. During this period, Cusack and her husband, Jeremy Irons, appeared in a Shakespeare Winter's Eve, a major fundraiser for the Riverside Shakespeare Company in New York, along with other members of the Royal Shakespeare Company. Following the Broadway run, the plays toured the US, making stops in Washington DC and Los Angeles. Cusack's connection with the Royal Shakespeare Company continued with a series of leading roles include Portia in The Merchant of Venice opposite David Suchet, Lady Macbeth opposite Jonathan Pryce in Macbeth and Cleopatra in Antony and Cleopatra in Stratford-upon-Avon and at London's Haymarket Theatre in the West End. In 1990, Cusack, in the role of Masha, joined two of her sisters, Niamh (as Irina) and Sorcha (as Olga), and her father, Cyril Cusack (as Chebutykin) for a well-received production of Anton Chekhov's tragi-comedy The Three Sisters in a new version by Frank McGuinness, directed by Adrian Noble at the Gate Theatre, Dublin before transferring to the Royal Court Theatre in London. The production also featured Niamh's husband Finbar Lynch as Solenyi and Lesley Manville as Natasha. The production won the three real-life sisters the Irish Life Award in 1992. One of her best known stage roles was Our Lady of Sligo by Sebastian Barry in 1998, in which she played the principal role of Mai O'Hara in performances in Ireland, on Broadway and at the National Theatre. For this she won the 1998 Evening Standard Theatre Awards for Best Actress, the 1998 Critics' Circle Theatre Award for Best Actress and her fourth Olivier Award nomination for Best Actress. In 2006/7 she starred with Rufus Sewell in Tom Stoppard's Rock 'n' Roll at the Royal Court Theatre in London which transferred to the West End and Broadway, winning Cusack her fifth Olivier Award nomination and her second Tony Award nomination. In 2015, Cusack returned to Ireland's Abbey Theatre, where she began her theatre career. She appeared in the world première of Mark O'Rowe's play Our Few And Evil Days, acting opposite long-time collaborator Ciarán Hinds. She won the Irish Times Theatre Award for Best Actress. Film and television Cusack starred with Peter Sellers in the film Hoffman (1970). She guest starred in an episode of The Persuaders! (1971), a TV