The subject of Perl Certification comes up every couple of years. There's generally a load of discussion followed by no action. There was even a mailing list set up on one occasion.

Sometimes someone will point to Is there an ISO or ANSI certified version of Perl? from perlfaq2 as an argument against a certification programme, but that talks about certifying the language rather than certifying the programmers.

--
<http://www.dave.org.uk>

"The first rule of Perl club is you do not talk about Perl club."
-- Chip Salzenberg