Quite simply Perl IS
I would never get a job for my Perl knowledge, nor does the job /career I have give any bonus points for my Perl skills. But come crunch time in analyzing a problem, simplifying a task, or automating a 'glue' solution. No one has it out there faster, more reliably, and more durably than myself. Managers roll their eyes if I point out it was because of Perl. Security still groans when I convince the powers to be to roll out a new version to the servers. But without Perl I'd only be your average operations specialist. With it I stand out when it matters most.
Perl is code for 'Heroes' :)