Index of online articles from The Perl Journal
brian d foy has put together an index of articles published in The Perl Journal from 2003 to 2006, all available on the web.
A lot of the articles are out of date, of course (nobody needs my 2004 OSCON roundup, do they?), but others like Simon Cozens' Ten Things You (Probably) Didn't Know About Perl still stand up today.
Check out the list, and please post back here about the most useful article you found.