perrin (email not shown publicly) Perrin is a contributor to various Perl-related projects like mod_perl, Template Toolkit, and Class::DBI. He is a frequent speaker at OSCON, YAPC, and ApacheCon, and a contributor to several perl-related books.
The best thing about conferences is getting to meet people who I'm on mailing lists with but have never seen in person. Some of them are people I've "talked" with, some are lurkers, some are talkative on lists where I'm mostly a lurker. Regardless, it's always great when someone walks up and says "Hi, I know you from the ____ list and I just wanted to say hello in person."
So, to all those people who did just that at YAPC, thanks, and pleased to meet you.