Sometime back I was putting together a jQuery carousel that was loading data via AJAX and I needed a animated graphic to indicate the data was in the process of loading. A search on google quickly produced www.ajaxload.info. This is an extremely easy way to produce a "loading in progress" graphic that matches your site's look. Those of you working extensively with AJAX probably already have a bunch of resources for this. But if you are new to AJAX, www.ajaxload.info is a great site to bookmark.