I'm a contributor to the VideoLAN project since early 2003. You might have heard about a media player named VLC. Its 2.0 user interface is what I spent most of 2011's summer on.
You can find information about future features and current development regarding VLC for Apple platforms on my blog.
While being based in Germany's center, you can find me at various FOSS and geek events throughout the world, such as SCALE in Los Angeles, CA, FISL in Porto Alegre, Brazil, OSDC in Sydney, Australia or VDD in Paris, France.
In real life, I'm a fifth year med student. At present, I'm finishing my doctoral thesis in medical informatics. It is going to be followed by another two years of studies.
References on request.