J. Allen Hynek Writes Letter About Infamous Ghost Experiment - The Black Vault Case Files
J. Allen Hynek wrote very sensible books in a measured tone about UFOs at the peak of public interest in them, and ended up being a consultant to Spielberg for Close Encounters (as well as making a cameo appearance.)
Interestingly, the letter at his link shows that, despite his reputation for leaning towards the "alien spaceship" side of likely explanations for UFOs, he did have an interest in the possible interconnection between psychic phenomena, including ghosts and poltergeists, and UFO sightings.
I wonder whether it was conversations with him that got Spielberg interested in writing the story for Poltergeist. I guess the answer to this might be in a biography of Spielberg on my shelf that I've never got around to reading.
Speaking of the very enjoyable Poltergeist, the remake is due out soon. The first trailer left me a bit underwhelmed, but the second one that came out recently is making me much more inclined to see it. It is, I think, a great example of a scary movie trailer, particularly when you consider most viewers probably know the story.
Watch it in a dark room with headphones on, and see if doesn't cause a jump or two: