Topic: Mostly Written In...
Jason (On JideBuilder's code), you're right, if the whole project is scanned that way, JavaScript will win over Groovy, but the fact is that the javascript code is part of the documentation, not production code. So I guess that without a project profile (how files are distributed) the measures will not be 100% accurate, but as each project may follow its own convention, this task will be huge and almost impossible to accomplish automatically.
Would it be possible to add more information (optional step of course) when registering a project, like source dir, test dir, doc dir ? that might help the tools make more accurate measurements =)