This is a first pass at creating a Salesforce.com APEX Remote Action wrapper for jQuery deferred objects. This will allow you to utilize the jQuery.deferred methods (http://api.jquery.com/category/deferred-object/), and avoid lengthy strings of callback methods.

exampleJS.js

function remoteActionDeferredWrap(remoteActionMethod, paramArr, escape){
  //Create the deferred object
	var deferredObj=$j.Deferred();
	//Create the callback method, this will manipulate the deferred object to show when complete
	var callback = function(result,status){
		if(status.status==true){
			deferredObj.resolve(result);
		}
		else{
			deferredObj.reject('Error: '+status.message);
		}
	}
	//Run the remote action
	paramArr.push(callback);
	//If we want to override the escape parameter, do so
	if(escape!=null){
		paramArr.push({"escape":escape});
	}
	remoteActionMethod.apply(this,paramArr);

	return deferredObj.promise();

}

/*Example usage*/
var someMethodPromise=remoteActionDeferredWrap(controller.SomeMethod, ['somevalue',someVar], false);
someMethodPromise.then(
	//Success!
	function(data){console.log(data);},
	//Rejection :(
	function(error){console.log(error);}
);