“I’m just going to do everything in 3D now. I’m going to shoot my daughter’s birthday party in 3D.” - James Cameron
"Stereoscopy (also called stereoscopic or 3-D imaging) refers to a technique for creating or enhancing the illusion of depth in an image by presenting two offset images separately to the left and right eye of the viewer" - Wikipedia on Stereoscopy
The following link shows 9 Crazy Cross Eye 3D Photography Images and How to Make Them and see them