Acces controller function from library / alternative work around?

[eluser]Bramme[/eluser]
1. $this->CI is indeed a variable filled with $this->CI =& get_instance()
2. When I $this->CI->load->library('MY_Controller') (or CI_Controller or Controller) I get a "Unable to load the requested class: my_controller", which seems logical as you otherwise never have to load it.
3. Scrapping the underscore didn't change anything.