Hey guys, I have been working on remaking the wpmudev messaging plugin. In the process I spent quite a bit of time trying to get jQuery UI AutoComplete to work without messing TinyMce up. In order to help any other developers out I wanted to post this. wp_enqueue_script('jquery-ui-autocomplete', '', array('jquery-ui-widget', 'jquery-ui-position'), '1.8.6'); This will get it working, don't forget to use no conflict wrappers for jQuery as it is required. I am using JSON to get the usernames of members as they type. I will post a full script later once I finish it up. Cheers!