You can turn your iPhone (or iPod Touch) into a 3D console with the MY3D Viewer for iPod touch and iPhone, a very nifty new gadget from Hasbro. It comes in black and white.
According to CNET:
Apple’s App Store currently offers eight Hasbro 3D titles that can take advantage of the new gadget, including My3D Presents, a look at movie trailers and demos of 3D apps; My3D 360 Sharks, a game that lets you explore the ocean’s depths through the eyes of a shark; and My3D Sector 17, a 3D shooter game in which you defend the galaxy.
It’s an updated version of the stereopticon and it works the same way. The program shows you two pictures, one slightly to the left of the other, and as your two eyes turn them into one image, it appears to have depth.