Pro Perl Debuggingco-authored with Andy Lester, edited by Jason Gilmore and published by Apress.
RT Essentialswith co-authors: Jesse Vincent, Robert Spier, Dave Rolsky, Autarch and edited by Allison Randall and published by O'Reilly.
The
Perl Debugger Pocket Referenceedited by Linda Mui and published by
O'Reillys.
This also has a nice little printable
bookmark
card to go with it, which you
can print out and use, or write to O'Reilly for a free one.
The perldebtut.pod a debugger tutorial distributed with the Perl source. The perlperf.pod is now out too, you can get it in perl 5.11.0 and above, and bleedperl. And an article in the Perl Review.
The CDC Technical Specification document - describing how Ronan Ogerand I designed and implemented a safe one-time-key encryption application to pump large (5 million line) financial trading feeds, through a daily process with a small time window, for UBS Investment Bank in Zurich, Switzerland. Not available - though expect an article on it sometime.
Slightly off-topic, but most entertaining is my translation into English of Einz, Zwei, Frei! Enjoy :-)