I was invited there, due to my role of core committer in the OFBiz project.
I had never participated at the activities of the Group before today, and I was not sure about the subjects to cover: a technical and framework focused presentation or a features oriented one? I ended up with something in the middle (the audience was diverse), I prepared a few slides, a demo and I also showed some code and examples of implementation.
In despite of my doubts, the presentation went well: the partecipants have been very impressed by the OFBiz's features and by the framework and they did a lot of questions (that is usually a good indicator of an audience's interest).
The JUG's meetings are hosted by the Department of Information Engineering - University of Padua - and this is a nice thing for me, since it is where (some years ago) I got my degree in Information Engineering. I did my OFBiz's presentation in the De lecture-hall: if I'm not wrong, in that room I attended the course of Theoretic Computer Science (and probably a few other as well).
It has been really pleasant to go back there... even if this time I was at the other side of the desk.