autodesk can be silently pushed, see their forums - [url]http://forums.autodesk.com/t5/Installation-Licensing/Silent-install-for-Inventor-2012-viewer/td-p/3078092[/url]

Matlab can also be modified to be silently pushed (modifying the .ini) - [url]http://www.mathworks.com/support/solutions/en/data/1-184HZ/index.html?solution=1-184HZ[/url]