I started a s2js-demo project where I'll be testing and showcasing s2js features and various tools I'm working on in relation.
@Alvaro
I've mentioned my interest to you on the Scala mailing list before, but I had to go a different route at the time. I ended up generating Closure code from a Scala-like DSL syntax using parboiled as parser generator. It worked and was a good experience, but I prefer the technique you have taken.
Now that I'm done with my project, I'll be spending the next several days working on integrating your s2js into my build process and tools. I don't use Eclipse, so most of my feedback will be geared s2js itself. I really like this project and should be able to commit a fair amount of time over the next few weeks.