really depends on what you use perl to do. if you use TK consistently I'd expect to see TK modules used, or if you're writing a lot of CGI then that's what you'd see.

Not that I'm any expert (far from it), but Me personally, I do a lot of sysadmin/file manipulation and goofing around with files. So I have an abnormally large number of scripts with the following modules in use... also, since I am cpan limited I don't generally use modules that I can't get with the base install... which makes life a pain, but it still beats other programming languages...

use Getopt::Long qw(:config no_ignore_case bundling); #or some variati
+on of this.
use Cwd; # I like to keep track of where I started before cd'ing
use File::Basename qw(fileparse); 
use File::stat;
use File::Find; #love this guy 
use Time::gmtime; #for timestamps, etc
use Time::Local; #time's easy to manip if it's a single scalar
use File::Copy; #somewhat DOS/Linux portable (crippled) copy 
use Carp;
use constant CONSTANTNAME => Value; # der...
use Tie::IxHash; #it's slow, but sometimes you need an ordered hash
use File::Compare; #somewhat portable file diff, truthfully laziness u
+sually wins and I usually just call diff as a system call...
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