Perhaps autoload can help you avoid having to use them all always?. If not, how about this:

opendir (DIR,"/path/to/dir") or die "Can't readdir: $!";
foreach my $module (grep /\.pm$/, readdir(DIR)) {
  require "/path/to/dir/$module";
  $module =~ s/\.pm$//;
  import $module;
}
closedir DIR;
[download]

I haven't tested this, so you might have to mess with the syntax to require and import.

-- Dan