Attribute::Persistence(thanks to DCONWAY for a few clues with that one…) are on their way to the CPAN.
I don't think I'll be reading The Perl Review again, thanks to Brian Foy's insistence on putting something about design patterns or XP in every issue; what really finished it off for me was the article on the iterator pattern, dispatched considerably more efficiently by Mark-Jason Dominus in his Design Patterns Aren't lightning talk.
Inside of Shishi code matches, you can actually rewrite the text you're matching. Who needs shift and reduce? Urgh.
I don't want to mess about with tying and DBMs and stuff. Hide that from me, abstract it away, and let me just say:
my %stuff :persistent; my %more_stuff :persistent;
Here's an article from Apple Internet developer documentation on how to get 5.8.0 installed. Very nice of 'em.