(CNN)-- Zelda Rubinstein, the actress best known for her role as the psychic in the horror film "Poltergeist," died in Los Angeles, California, on Wednesday, her agent said. She was 76. Eric ...

Zelda Rubinstein was an American actress and human rights activist, known as eccentric medium Tangina Barrons in the Poltergeist film series. Playing 'Ginny', she was a regular on David E.