Wow... TeamPlain is easy to install
As I am sure you have seen Microsoft have purchased devBiz and made their TeamPlain product free to all TFS customers. I have just installed the new free release of TeamPlain on our TFS system and I must say what a pleasant experience it was; run the MSI answering a few questions, go into the newly created TeamPlain admin web page, enter the URL of the TFS server and that's it. Really easy and it just works. Compared to the the fun I have had with other bits of TFS this is joy.
I think this is a really cool product, it fits the hole that project managers, and really any project member who does not cut .NET code, do not want to have to use Visual Studio Team Edition to do day to day tasks. This is exactly target community that TeamPlain addresses.
If you are a TFS user, and have not done so already, download TeamPlain and have look.