I wasn't sure which topic to put this under, but hey, "Shared Code" sounds good.
PulpCore is a "2D rendering and animation framework for the Java plug-in".
There's a couple live examples here: http://www.interactivepulp.com/pulpcore/
The downloads and such are available here: http://code.google.com/p/pulpcore/
It's brand new, so the web page is sparse and I haven't set up a forum yet. And of course, there's lots of API documentation to write.
Try it out if you have the time - I'm definitely looking for feedback from the community to make it better, in terms of feature set and ease of use. It won't be everyone's cup of tea (especially since it's a framework, not a library) but I'm sure some people out there will like it.