Martin Fowler's closure examples in Groovy
Martin Fowler wrote an article in his Bliki on Closures. He uses Ruby as demonstration language for closures. On this page (nearly) the same example is written in Groovy:
The whole example with class Employee (with an dispensible, but convenient, because boosting readability, toString() method), an example list with four employees and some explaining assertions (Dierk would call this Inline Unittests):
Results of your search request can come from various sources: the Groovy website itself,
the JIRA issues, the API documentation, as well as a few other interesting Groovy-related blogs.