Suburbanites Steve (Nelson) and Diane (Williams) suddenly experience paranormal activity in their home. What begins as minor excitement quickly turns into nasty ghostly encounters. The disappearance of their daughter Carol Anne (O'Rourke) forces the Freelings to bring in parapsychologists and a professional exorcist to exorcise their home. Directed by Tobe Hooper and featuring Oscar Nominated Visual Effects by Richard Edlund, Michael Wood and Bruce Nicholson, Poltergeist is one of the most entertaining horror films of its time.
The 2-part documentary "They Are Here: The Real World of Poltergeists Revealed"
Part I: "Science of the Spirits"
Part II: "Communing with the Dead"