I attended my first "unconference" today, BarCampRDU very enjoyable. It is mainly about making connections with other cool people doing cool things. Mainly, I'm not cool... and rather boring... so I was horribly out of place. Anyone can present if they want to and conversations can devolve into a morass rather quickly.
Still, I enjoyed talking about terribly geeky things with other people who aren't from marketing.