I've been enjoying ColdFusion's ability to interact directly with java. ColdFusion's built in handling of Web Services has some annoying limitations, but I've been able to get around them using the underlying java. In most cases I'd been able to find a jar file of all the compiled stubs for a particular web service, but keeping updated as the versions change has been frustrating.

Enter ant. With a little help from Kenny I was able to update stubs for a web service with ant a few weeks ago. Today I modified the build file to work with a different web service, and everything just worked. That's a GREAT feeling.