I remember seeing these videos (I think they're fairly well known) of these glass boxes with clocks inside then, along with various other materials (I dont remember exactly... maybe a pencil, some pens, a stapler, just random things). Anyways, the clocks would be running, and things would suddenly disappear inside the box (and reappear too, I think). You couldnt see anyone in the video (atleast the part I saw). The show I saw it on said it was someone using some sort of mental (i dont know the right word to use) powers to make these things move, and disappear and reappear. From the film quality I would guess these were from the '60s or '70s. I saw it again on some recent FOX show. In it, they attributed the phenomena to ghosts. It seemed pretty easy to fake the film, even with the clock running. I found it interesting none the less. Does anyone know what I'm talking about, and where I can find it?