Our company has a digital photo contest each month. There’s the typical categories–animals, nature, people, humor. Grump pushed very hard to have them add a “Special Effects” category. This is mostly so he’ll have a chance to try out this little trick with animated gifs that he found at the web site of Jim Gasperini.
What he does is take two photos slightly off-angle from each other (about the distance between your left and right eye) and combines them into an animation that rapidly switches between them. This creates a flickering 3D effect that is odd, but it works.