I blogged about this handy community tool before.  See here.  I just noticed that there’s an update version, as of 3-21-2012, with some new features.  From the Release Notes:

Now supports mult-forms and explicitly setting which attributes, tabs, sections, and left navs to include in the model. Check the documentation for more details.

I requested those features, so I am even more excited about this tool to increase productivity when writing JavaScript code that interacts with CRM 2011 forms.

@devkeydet