Just like to mention that I've created a space on Google groups to host the Nederlandse Groovy & Grails User Group (NLGUG). It's a Groovy & Grails User Group for people in The Netherlands.
I started this group to start building up a network of Groovy & Grails developers in The Netherlands. If the group grows and people are interested in meeting up this would be great!
So if you are located in The Netherlands and interested in joining, go to http://groups.google.com/group/nlgug.