3D effects with one eye
3D effects with a single opened eye is possible if you use motion clues to determine depth of objects. Jitterpic is a small application for your iPhone based on this principle. The 'lite' version is free; check it here on the JitterPic web site.
JitterPic offers a video demo on Youtube here. You can view JitterPics on your iPhone or share them with friends via email, Facebook, and MySpace.The JitterPic effect is created by overlaying two similar photos and flickering back and forth between the two (think stereoscopic animated GIF). JitterPics shared via email are animated GIF files that can be viewed in any web browser. A JitterPic gallery is available on Facebook here (you will need a Facebook account).