York's career was briefly fueled by starring roles in two controversial films dealing with lesbianism, "The Killing of Sister George" (1968) and "X,Y and Zee" (1971). She has since appeared in mainstream fare such as the "Superman" series as well as art-house features including Jerzy Skolimowski's "The Shout" (1978) and Andi Engel's "Melancholia" (1989). York co-wrote her 1980 feature, "Falling In Love Again".