Susan Alexandra "Sigourney" Weaver is an American actress and producer. A popular culture figure, Weaver is known for her leading roles in science fiction and horror franchises, having amassed several screen and stage credits since her debut in 1971. Her accolades include a British Academy Film Award, two Golden Globe Awards, and a Grammy Award, and nominations for three Academy Awards, four Primetime Emmy Awards, and a Tony Award. She appeared on Channel 4's list of the 100 greatest movie stars of all time in 2003.