CaseCloner is a small VB app that lets you create a "template" of cases that you want to submit to FogBugz.  Then you can edit all of those cases at once and change their Project, for example, and submit to FogBugz (creating a whole new set of cases).  It was written in one hour using the FogBugz API.  Let me know if you have any comments or questions.

Download the .exe zip file (warning: there is barely any error handling, so it's better to use the source.)

Download the source zip file