Autodesk recently demonstrated an upcoming version of what I believe is 3D Max, taking advantage of the multi-touch feature that will be found in the next, new version of Microsoft Windows, known for now as "Windows 7". On this video you will see zooming in & out, rotation, polygon deformation and more using just screen touch.
Autodesk's video demonstration: http://www.youtube.com/watch?v=8O_rQh7Dbc4
Gee, I wonder if Hammer would work with multi-touch.....