If you don't see the filenames, then you're looking at an old demo version of BumpTop. You're right that it's pretty important to have ;-)

BumpTop is definitely not for everyone, but that's fine. Not all software has to be designed for your 50 corporate users, because they certainly have different needs than the rest of us. A designer, for example, might really appreciate the visual and spatial aspects of the system, because it's more meaningful than a bunch of PSDs named icon-concept1, icon-concept2, etc.

Also, although the 3D and physics is the most noticeable thing about BumpTop, it's actually got quite a few very useful features that are completely orthogonal to the 3D/physical aspect. For example: type to find on filenames, thumbnails of several different document formats, seamless photo browsing, and icons that grow or shrink based on your usage of a document.