Some weeks ago I bumped against Grails. Grails is an open source web application framework inspired by Ruby on Rails. With Grails you can easily and quickly build/generate a web application using Groovy and (any) Java Technology.
In the near future I will post some of my Grails experiences here. But today I found a great Grails tutorial, written by Jason Rudolph, I really wanted to refer to: Grails + EJB Domain Models Step-by-Step.