I just added the following idea to http://wiki.winehq.org/SummerOfCode :
Run the Mauve Java test suite against Sun's Windows JRE, and file bugs / write test cases in C / fix anything it finds. (See http://sourceware.org/mauve/, http://appdb.winehq.org/appview.php?versionId=3054 ) And make it easy for other people to run these tests, too.
The Mauve regression test suite would be incredibly useful as a regression test for Wine. And the many win32 apps that now depend on Java and can't just use Linux's jvm would benefit greatly, too.
Oh, I so want this to happen... - Dan
-- Wine for Windows ISVs: http://kegel.com/wine/isv