Martin Natano - The Python Universe
Laura - Making stuff pretty with CSS
Stefan Koegl - Introducing pyugat; the Viennese Python user group
Andreas Tiefenthaler & Floor Drees - Making stuff look cooler by using a terminal (and understanding what you're doing there)
Florian Dorfbauer - How does it all work behind the scenes?
Horst Jens - The joy of Game development