Two thoughts:
1. It's not the cross section I would choose, and
2. It really depends on what you're planning to do with Perl.

Having a copy of Programming Perl (the "Camel book") within reach can be very handy. It's arguably the canonical Perl reference, and you'll see people referring to it a lot. While climbing the learning curve, I got a lot of mileage out of Effective Perl Programming. Now, I keep a copy of The Perl Cookbook within reach.

If you're planning to use Perl objects, or want to be able to understand a lot of the stuff that comes off of CPAN, Damian Conway's Object Oriented Perl is a nearly essential read.

Beyond that, it really depends on what direction you're heading. There are good mod_perl books, DBI books, data munging books, and so on.

If you're aiming for proficiency, there are some excellent non-book resources available. Randal Schwartz (merlyn) keeps his past articles on-line. I got a lot out of studying his early Web Techniques articles when I was getting started.