BA in English. Perl has been 5-90% of my last 8 jobs or so. I don't think any job is 100% any one thing, though. As close as I've got to 100% there was still HTML or database or other tool IO or ... involved.
A lot of the Perl hackers I know personally, maybe most, were not formally trained in CS. Part of what I love so much about Perl is its linguistic feel. Its communicative depth. I did some programming as a kid in BASIC and Assembly but I probably never would have returned to it if I hadn't met Perl. Turing completeness accepted, Perl is just so much fun to program I find myself looking for things to try with it, not just addressing the actual needs at hand.