Just came back from fosscomm 2012 xD
Interesting topics , great people and lots of fun..
Our group fossaueb was especially adventurous with lots of happy accidents like some of the dudes missing the train stop at Serres , walking in circles trying to find the conference and other things..
Noteable sessions were the ones made by Dimitris Andreadis , one of the team leaders of the JBoss project , the Greek Pirate party speeches and Creative Commons topics , the Unix-like kernel programming from scratch by Giannis Tsiompikas and the workshops including RPM packaging step by step by Nikos Roussos aka comzeradd
I also took a lot of photos some of which are in this photo album tarball