In the documentation of the UV project modifier (which like all the entries is really vague and short) it said something about using a sphere as a projector. And a picture showing the effect on two perpendicular planes. I’d really like to find out how this is done, because so far using an object as a projector just makes it project from one axis.
It would be cool if the UV project modifier could be more like in XSI, if you are familiar with it, where the methods of unwrapping are treated as movable objects, such as cylindrical and spherical projections, and they update in real time as you move them. Pretty cool for unwrapping things like chair legs and the like.