The brainchild of Mark Jason Dominus, Perl God, SuperPython is a version of Python that takes the concept of significant whitespace even further than the most rabid Python advocate would have dreamt of. Using this module, you can now write inline SuperPython programs inside your Perl code. Check out this excellent example by Perl Genius Javier Rodriguez.
I hope it's not too late to get Mark into sharing his insights with the lead Python developers and get some of this magic into the first beta of Python 3000.