http://www.youtube.com/watch?v=lQwAjyR6BhU
rolls through setting up a new project in eclipse, and then sets some
debug points and shows off full java debugging by using the hosted
mode browser.
It could use some voiceovers and way more resolution but it's a good
start.
It's not mine, it's from "TrashHalo". See this thread on GWT:
http://groups.google.com/group/Google-Web-Toolkit/browse_thread/thread/8c09b8418f847a96