RPC server to retrieve data from any model or controller

[eluser]coldscooter[/eluser]
I am setting up a RPC server for my CI install. I would like it to be a single controller that can be called remotely to retrieve the $data array from any controller function, or to retrieve the output of a model function.

If there are way to evoke an instance of a controller from a separate controller, so that I can return the array of results?

I basically want an RPC gateway that has access to all the logic within the controllers and models.