Lots of new things. Perl is an immensely powerful language. If you know how to write code well, it will be fully comprehensible by even casual programmers.

Many orgs ship perl based tools as current, up-to-date products. Mellanox OFED is one I was using earlier today.

My own github[1] has a plethora of perl projects.

[1] https://github.com/joelandman