Edge Case

This primary goal of this group is to find new and interesting ways to use Java beyond those commonly used in typical programming. This includes both using the rarely used libraries (reflection, references, proxies, channels, etc) and also using commonly used libraries in new ways. Anything that gives hard-core Javaphiles, new and old, that “wow, I never knew that was possible!” feeling will fit the bill.

http://edgecase.dev.java.net