When I read the latest "who is hiring" post I was overwhelmed by the amount of Python listed; I've always used PERL but I seem to be the only one at the office left who can.
I am pretty sure Perl developers cannot ask for big bucks just yet, perhaps in 10 years?
EDIT: I should mention, I'm not just refusing to learn Perl, I'm just choosing to use Python where Perl would have been used before. No other Devs on our team are Perl experts, all our Perl code is Legacy.