It's well worth a look: http://www.ozonehouse.com/mark/blog/code/PeriodicTable.html
He announced it to perl6-language[at]perl.org on May 26th, and it was announced on Slashdot today. For those of you not reading either of those, enjoy.
Further discussion: http://www.nntp.perl.org/group/perl.perl6.language
-- Darren Duncan