Here is my first round of GWT Products.....
http://www.atlas.ca.gov/view/gallery.html
http://www.atlas.ca.gov/download.html
http://justinmerz.homeip.net/swim/gwt/RemoteCeic.html
http://projects.atlas.ca.gov/ (the embedded project search)
... with a couple more in the works ...
Couple notes, inserting as an embedded 'widget' can be interesting. Moreover, when you have a template w/ xhtml doctype or want your gwt code to exist in a different directory than the sites code. I have a simple solution using a $wnd variable for imgs. Looks something like this....
<script type="text/javascript">
var gwtRoot="themes/atlas/gwt/";
</script>
<script type="text/javascript" language="javascript" src="themes/atlas/gwt/gov.ca.ceres.gforge.ProjectSearch.nocache.js"></script>
<div id="ProjectSearch"></div>
.... now I can move my code wherever I want.