This looks pretty slick:
http://blog.jetztgrad.net/2010/01/released-grails-spy-plugin/
This isn’t at all related to the p6spy plugin, which allows you to monitor db calls in Grails. Rather, this allows you to inspect all the dynamic beans that are created at runtime in Grails.
You can grab the source from github, but take a look at the link above to see what sort of cool goodness you get with this plugin.
