Adam Houghton has created a CoverFlow implementation for GWT called GWTFlow.

GWTFlow uses standard GWT widgets for positioning the images and callouts to Script.aculo.us for the effects. All of the photos are just Image objects placed on an AbsolutePanel, with a little math behind the scenes to determine positioning & simulate perspective. Albums & images are retrieved via RPC calls to a Java service, which then calls out to Flickr’s public API using flickrj. GWT made development & debugging a breeze, with history & cross-browser support basically coming for free.

Thierry Ruiz is using GWT in his site called dotemplate which is a free, online web template generator. The stylish looking control panel used to customize the web templates was created using only basic GWT widgets.