jQuery.Controller.static.defaults  attribute     

A object of name-value pairs that act as default values for a controller's options.

$.Controller("Message",
{
  defaults : {
    message : "Hello World"
  }
},{
  init : function(){
    this.element.text(this.options.message);
  }
})

$("#el1").message(); //writes "Hello World"
$("#el12").message({message: "hi"}); //writes hi