One of the groundbreaking plays of the ’60s and a continuing audience favorite, A Day in the Death of Joe Egg Peter is an incisive, wonderfully theatrical examination of the private language of a marriage and the ways that it enriches and destroys. This semi-autobiographical portrait of a couple who must come to terms with having a disabled child is included on the National Theatre’s list of the “100 Most Significant Plays of the Twentieth Century.”