If anyone is searching for some leisure activity, here's an idea:

     »Iowa developer Brian Harry, also known as "leouser" on
     java.net, is renowned for the bug fixes he contributed to
     Java SE 6, which number well into the hundreds and won him
     a Duke's Choice award for outstanding platform
     contributions in 2006. His method was simple: He scanned
     Sun's openly available bug database for intriguing bugs,
     primarily in the Swing user interface (UI) code, printed
     them out, and put the bug reports on a stack beside his
     computer. Then, he fixed them one by one, submitting them
     through the standard JDK Community contribution process.«

http://java.sun.com/developer/technicalArticles/Interviews/community/harry_qa.html