First came 2D. Then came 3D. Now you can print 2D and 3D DWF files without installing any software. Since Project Freewheel is web based, you can print DWF files from any operating system such as Linux or Apple OSX using the print capabilities of your browser.
Check out http://www.freewheel.labs.autodesk.com. You can try uploading your own DWF files. To go beyond the paper, you have to be able to get to paper first. This newest Project Freewheel addition helps with that.
For the latest information on Project Freewheel, see Scott Sheppard's It's Alive in the Lab blog.