HDR display on your LDR monitor via flickering.
Note how you can only see details in the bright or dark areas of the original images, but you can see everything in the animation.
Having each pixel randomly selected from the originals is much less trauma inducing than flipping between the full bright and dark images.
Did I achieve anything other than contrast reduction (of a merged HDR)?
Images are from http://www.debevec.org/Research/HDR/.