Could it be http://en.wikipedia.org/wiki/Stereoscopy
I think you're right, and diN0bot was referring to "Wiggle stereoscopy".
Here's a few more examples, that to me are more effective than the one on the wikipedia page:
Here's a few more examples, that to me are more effective than the one on the wikipedia page:
the artist in this case turns the two images into an animated gif.
spooky cool effect. i'm trying harder to find the link.....(eit)
still can't find it!!!
a much cooler post by the OP
http://www.romancortes.com/ficheros/starry.html