I'm delighted to announce that Ryan Forsythe's project to port Kenny Tilton's Cells to Python was accepted for the Google Summer of Code 2006 and I'll have the pleasure of mentoring it with Kenny's help.
I think Cells will be a wonderful contribution to Python.
Picking the projects for Python was very difficult as we ended up with only 25 slots to fill from 186 valid submissions. You can see the list of PSF SoC projects on python.org. Note that some individual open source projects in Python were mentor organizations in their own right so there are more Python-related projects being done.
I think next year, I might apply for one of my projects to be a mentoring organization because there was some post-voting discussion that really PSF should focus on projects that directly relate to Python the language rather than projects that just happen to be written in Python.