Sigourney Weaver (b. 1949) is an American motion picture actress. She is perhaps best known for her role as Ellen Ripley in the Aliens film series. She also played staring roles in the Ghostbusters films, and Gorillas in the Mist. She has been nominated for Academy Awards for her work in Aliens (1986), Gorillas in the Mist (1988), and Working Girl (1988). Unusually for a Hollywood personality, she has been married only once, to avant-garde theater and film director James Simpson.