An old programming contest reborn: Programmer of the Month (1993-2000)
I don't recall very many of the programming contests I entered in the past decade, but it is possible I tried my hand a few times at previous incarnations of the POTM. If you hae the will to not use .NET then you can head over and try it out. http://dinsights.com/POTM
If anyone is interested in participating in a mirrored version of this contest based on a .NET interface, let me know. The squirrel contest they are running now is extremely simple to surface through a network interface with a running competition/test server pair.