WIP - jQuery Autocomplete

spe.jquery.SPautocomplete.js

var acField = $('input[title="Related Task"]');
var listSvc = _spPageContextInfo.webServerRelativeUrl + "/_vti_bin/listdata.svc/";
var listSvcList = "Tasks";
var listSvcFieldQuery = "Title";
var listSvcFieldReturn = "Title";

acField.autocomplete({
	source: function(req, res) {
		var reqUrl = 
			listSvc 
			+ listSvcList 
			+ "?$filter=startswith(" 
			+ listSvcFieldQuery + ",'"
			+ req.term
			+ "')";
		$.getJSON(reqUrl, function(data) {
			res($.map(data.d.results, function(result) {
				return result[listSvcFieldReturn];
			}));
		});
	}
});

Note to self: I missed the end of this demo and can't find recording.