Three of Leonard's plays have been presented on Broadway: "The Au Pair Man" (1973), which starred Charles Durning and Julie Harris; "Da" (1978); and "A Life" (1980). Of these, "Da", which originated off-off-Broadway at the Hudson Guild Theatre before transferring to the Morosco Theatre, was the most successful, running for 20 months and 697 performances, then touring the United States for ten months. It earned Leonard both a Tony Award and a Drama Desk Award for Best Play. It was made into a film in 1988.