Well, I'm going to go out on a limb here and say PL/SQL. Or any database programming language for that matter. Most of my perl coding is database related, including writting API's for various projects, and stored procedures, combined with a perl front-end, can't be beat.

I'm just wondering, do people not consider these programming langauges? I know the poll couldn't list every language but there was nothing database related in the poll.