Juan Julián Merelo
JJ Merelo is a Perl user since 1993, which makes this year the 20th anniversary. He has used it continuously at his day job as professor at the University of Granada, contributed to CPAN since 2001 and participated in two YAPC conferences talking about, you guessed it, evolutionary algorithms in Perl. He's known to engage people who say that other languages are better than Perl, specially those who, besides, think that vim is better than emacs.