At Perl Monks and other places many interesting Perl-scripts can be found, small and big, varying from very handy oneliners to complete module libraries.

Interesting sections at Perl Monks: Code, Snippets, Meditations, Craft and Seekers of Perl Wisdom.

Perl Monks have a fun part: it is possible for people to value other people's contributions by casting a plus or minus vote on such "nodes". That way, a node can have a positive or a negative repuation. The higher the reputation, the more the node is valued by the Perl Monks. Of course this is a very subjective value system, but still, a node with a huge reputation can't be all that bad.

Complete modules can be found at CPAN. A simple search elsewhere brings you many other scripts, for example at Google (oh, by the way, ignore Matt's Script Archive).