I think that the online book Exploring Programming Language Architecture in Perl would make a great addition to the Tutorials section, probably in one of the "Miscellaneous Perl Tutorials" or "Other Topics" sections.

It's an excellent (free) book written on a subject which every Perl programmer should probably be at least passingly familiar with (programming languages, parsers, and interpreters, that is).

Another thing that I like about it is that it walks the beginning programmer through the entire process of building a full-featured, large-scale application -- namely a parser and interpreter(it even shows how to write tests!), which is something that many tutorials with their "Hello world" and "Convert Fahrenheit to Celsius" examples do not effectively teach.

Jesse Taylor