Every YAPC::EU (Yet Another Perl Conference Europe) is a really big event in the Perl world, with lots of people from every part of the planet. I got to know some of them already, so we just meet like good friends :-) This year's theme was Corporate Perl, how Perl is used in the corporate world.
This time though I was presenting a talk during the first day of the conference: How Opera uses Perl, that's up on Slideshare right now. If you take a look at it, you will find out that we actually use Perl for a lot of systems, from the very tiny to very complex, mission-critical ones. It's been quite some fun preparing the talk, and I think it also went decently.
There were lots of other interesting talks, even lightning talks, like Giuseppe Maxia's MySQL Sandbox, or Sue Spencer's talk about "Perl at Cisco Systems". There was also a talk on roles and inheritance in OO systems by Curtis Poe of the BBC, and a really funny lightning talk by Alex Kapranoff, a russian guy, but I don't remember the title. Merijn Brand presented lots of ways to improve your Perl modules. This guy's amazing. Also avid Opera user.
During lunch we met up with Martin Berends and Carl Mäsak and talked about Perl 6 syntax, CPAN 6, etc… really cool people.