Rating: 

I received this book as a token of appreciation for my contributions to the 2006 Perl Advent Calendar (http://perladvent.pm.org/2006/) . It's the first book I read as part of the O'Reilly Hacks' series of books (http://www.oreilly.com/store/series/hacks.csp) , and it proved to be a light yet informative and entertaining read.

The book covers various useful "hacks" or small tricks that allow one to achieve a lot of cool tasks when working with Perl. These tricks are unorthodox and stretch the limit of one's Perl knowledge. Since they require an advanced knowledge and understanding of Perl, I would recommend this book only for Perl experts. Some of the B:: using modules were even too high-level for me to understand how they worked internally. However, I understood the purpose of the code in all cases, even if I didn't understand the code itself.

So it is a recommended read for people who've worked with Perl a lot, and wish to learn many new and useful tricks. Perl Hacks for Perl hackers, indeed!