In a moment of great generosity, the folks at JetBrains have offered up a free developers license for Idea/J for registered Sun Grid developers...

========LICENSE DETAILS========
Type: 1-Year Open Source

========SOFTWARE PRODUCT========

Product Name: IntelliJ IDEA
Licensed Version(s): 5.1 and any generally available new release
Media: Electronic. The software is available for download from:

http://www.jetbrains.com/idea/download/

Please do see the community for more details...

and thanks to Ilia and the great folks from JetBrains!