After some problems with hosting which were solved thanks to the PSF the PyWeek site is back.
http://www.pyweek.org/ Go see the results of the challenge, in particular the outstanding Nelly's Rooftop Garden and Trip on the Funny Boat. PyWeek challenges entrants to develop a complete game in Python in a week. Inspired by similar programming challenges and National Novel Writing Month, the event capitalises on the extraordinary work people can produce under the combined influence of a very short deadline and a community of like-minded people. This year there were approximately 100 entries, of which about 35 were completed. The next PyWeek will be in about 6 months. -- http://mail.python.org/mailman/listinfo/python-list
