I am a lawyer living in Berlin, Germany.
I have been on Wikipedia since 2002 and was one of the early, very active users. I contributed quite a lot to German history. My other interests include politics, music (jazz, progressive rock, classical), film, and architecture.
I believe I invented those funny "series" boxes that are really popular these days. Back then, I simply inserted them as raw HTML into the History of Germany articles. See this old version of "Weimar Republic", for example. Then people picked that up, and eventually, the boxes became a feature in the software.
I no longer have much time for working on Wikipedia. But I still use Wikipedia frequently and fix little things here and there occasionally, and I am proud to have contributed to the thing in its earlier stages, before it got really big.
This user page still has a few subpages for the really curious.
Sandboxes: