GU4DEC Live On The Web
Programmers and others interested in the GNOME desktop environment gather annually for an event called GU4DEC, the GNOME Users and Developers European Conference. This year, there's extensive live coverage of GU4DEC (currently in progress, at Trinity College, Dublin) on the web, including a growing online photo album, audio recordings and video streams, and presentation materials. (The schedule is handy if you want to follow along.) I hope there's a similar sort of integrated documenation / dissemination from the upcoming KDE developers' conference at the Czech Republic's Nove Hrady.
Well, people who work for slightly more understanding bosses :) When I went to FOSDEM it took place over a weekend, so I took a day off to recover and went along. I'm hardly a neo-efficient coder (which is what, exactly), but it was great fun regardless.
If you look at the people going, it's basically:
a) Professional GNOME hackers from Red Hat, Ximian, Sun etc
b) Volunteers who have taken time off/combined it with a holiday to Dublin.
So you don't actually need any job at all, just a bit of spare cash and an interest.