A good friend of mine, Delano, a professional photographer, had rather an unusual experience in his own home. His home, I might add, has absolutely nothing "spooky" about it and he and his wife had lived there for many years when this incident occurred.
They still live there, and it has never been repeated.

Delano and his wife were sitting in their living room one evening in early September. She was reading the Reader's Digest, and he had been going over some photographs he had taken in the old section of town, of a historical house which was about to be demolished. (Whether this has anything to do with what happened, I don't know, but it's worth mentioning.) The room was getting chilly as night fell, so Delano got up and went to turn up the thermostat. The thermostat was in the hall that ran from the living room to the kitchen. He didn't bother to turn on the hall light, as he carries a pocket flashlight. Delano was standing at the thermostat with his little flashlight, peering at the dial, when he felt someone behind him and a soft voice whispered in his ear, "I love you." Thinking his wife had followed him down the hall, he said absent- mindedly, "I love you, too, sweetheart," and finished adjusting the thermostat. He turned around and no one was there. He went back to the living room, and his wife showed no signs of having left her chair. When he questioned her, she said she had been sitting right there reading for the past hour, and she hadn't seen or heard anything unusual.

Delano wasn't frightened or upset by the incident -- in fact, he thought it was rather neat -- but he was a bit sorry that he hadn't given a more caring response to whoever or whatever had whispered affectionately to him in the dark hallway.