The insecure.org guy found out that his most famous nmap program is actually featured in Matrix II.
And while I'm at it, I've to mention that he put on-line a handy survey of the Top 75 Security Tools. Perl (and Python) are on the list, because : ...while many canned security tools are available on this page for handling common tasks, it is important to have the ability to write your own (or modify the existing ones) when you need something more custom. [...]
