I have been privileged to have been a technical editor for some very good Perl books.
This was my first foray into technical editing of Perl books and my introduction to Damian Conway, who has become a good friend and colleague. This is one of the best technical books I have ever read as well as a great Perl book. Its review of Perl in chapter 2 is worth the cover price on its own. It then clearly explains the basic Perl OO features and later gets into many different aspects of it.
This is a good general introduction to Perl book. I had the nice experience of being on the first Perl Whirl cruise with its author and we had some intense editing sessions. It has been the only time I have ever worked on editing with in person with the author of a book.
This book is due out in March 2004. Peter is a great writer and I hope this book gets the sales it deserves. It covers a fresh aspect of Perl development - how to take over and improve a legacy Perl application. But beyond that, it has great insights and ideas on developing new Perl projects such as writing test code first (an XP concept but well covered here).
This book is being written now and I recently signed up to be a technical editor for it. It will cover various Perl 5 modules and new features that have been created to do or emulate Perl 6 features. More on this as I get into the editing process.