lets say you're watching lots of active deviants (like i do) that submits much (mostly very pleasing to the eye) art and you think that the thumbnails are to small to give a fair impression about the picture but browsing the full size versions takes to much time...
...in short, cooliris lets you have a quick overlook so that you can decide which deviations are worth watching in their full (size) glory.
"It's simply the fastest and most stunning way to browse photos and videos from the Web or your desktop. Effortlessly scroll an infinite "3D Wall" of your content without having to click page to page," -
cooliris.com