They can generate low-res, closeup 3D images of the ground using the stereo hazcams and manual colorization. It's far from what stereo zooming mast cameras would have given them, but I still think it looks cool: http://nitrogen.posterous.com/curiositys-view-of-mars-in-pse...

And yes, I'll probably keep posting this image in nearly every thread that mentions Curiosity's cameras until NASA starts giving us more color imagery.