Went to a Philly SpringFramework User Group Meeting last night (http://phillyspring.org/past_meetings.html) where a Grails committer demoed Grails. I have to admin, both Groovy and Grails were very impressing. Groovy’s syntax is nice, clean (especally collections – map,list literals, object literals), Java-like and expressive. Grails takes a lot of Rails inspired features like scaffolding, generators, conventions but builds them on Spring/Hibernate allowing you to mix and match. The dynamic finders were downright sexy. Definitely something to watch.