Susan Alexandra "Sigourney" Weaver (born October 8, 1949) is an American actress. A figure in science fiction and popular culture, she has received various accolades, including a British Academy Film Award, two Golden Globe Awards, and a Grammy Award, in addition to nominations for three Academy Awards, four Primetime Emmy Awards, and a Tony Award. In 2003, she was voted Number 20 in Channel 4's countdown of the 100 greatest movie stars of all time. Weaver rose to fame for starring as Ellen Ripley in Ridley Scott's science fiction film
Alien (1979). She reprised her role in James Cameron's
Aliens (1986), for which she received her first Academy Award nomination, and again in
Alien 3 (1992) and
Alien Resurrection (1997). The character is regarded as a significant female protagonist in cinema history. She reunited with Cameron in
Avatar (2009) and
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