Good idea!

Like many others I have my own selfish agenda, I'd like to see tutorials on:

• Parsing structured mark-up: XML and HTML for example. People often seem to ask why their quick RegEx fails on HTML/XML. There are some great (e.g. XML::LibXSML) new generation ways of dealing with XML, and there are some very overlooked (e.g. HTML::TreeBuilder and XML::TreeBuilder) XML/HTML modules out there.
• Perl on different platforms. I know some of this is in the actual documents, but it's not presented in a tabular manner. e.g. flock works on some Win32 systems, but not all, or that Cygwin Perl has quite a few differences with AS Perl and so on.
• When NOT to use Perl, common tasks that people think they should use Perl for, but where there is a far easier way to do it...