With the Google Eclipse Plugin, as often demoed, it takes 5 minutes to put a GWT/GAE Java “Hello World” application in production: this talk will be about what can you do after these first 5 minutes of total bliss. It will cover Google App Engine Java’s APIs, including recent features like XMPP and Task Queues, tools integration, limitations, how to run other JVM based languages used in the wild (Groovy, JRuby, Scala, Javascript), and show cool apps that have been developed with App Engine. Then it will present Gaelyk, a lightweight toolkit for easily developing applications in Groovy to be deployed on Google App Engine Java. We’ll learn more about what the toolkit provides, how to leverage it for your own needs through some demos.