Our project team was talking about setting up an internal blog or wiki a few days ago. Today, Sam noticed Harry Pierson's DevHawk Wiki -- a new Wiki application written in C# using some ideas from Don Box's delegates post from a few days back. I downloaded the sample and installed it internally for our team.
We have already started using it, and its working great. Thanks Harry!
This Wiki version is a v 0.1 release. He is looking for collaborators, if you are interested in helping with this project.