Back in July 2009, I was lucky enough to be hired onto a Groovy/Grails project, despite the fact that the extent of my experience with Grails was an hour on a Saturday night writing an Address Book app. (Oh, and most of the hour went towards integrating the app with the Yahoo! Maps API.) What began then ended up with me leading a team of ten developers at its height, designing and implementing an application that heavily utilized SpringSource's products - Spring Security to integrate with Atlassian Crowd, Spring Web Service to integrate with the external partners, Spring Integration to automate responses in our test app, and of course, Spring Webflow for our most complex screen interactions, and of course, just about all of Core Spring, which is what Grails is founded upon.
It's been a great learning experience, and I hope to use this forum to describe what I've learned about these products, as well as the rest of the Spring offerings.
And I promise to never say I'll "Spring into Action". Except right now.