I've updated the XnaControl a bit by cleaning up the code, putting the XnaControl in its own library, putting classes and enums into their own files, and a few other small things. I also included a few of the other classes that I've posted here before such as: LateBinder, and StopWatch (was SimpleTimer) as I plan on using them at some point.
I plan on making a few more changes based on some feedback, and implementing a few more of the documentation samples in the demo form -- Stay tuned :-)