I just wrote a post about incorporating the Kinect SDK in a WPF Model-View-ViewModel (MVVM) application:

Now that the official Kinect SDK is out I've been looking for good patterns when incorporating it into Windows 7 applications. The Model-View-ViewModel (e.g. MVVM) pattern is my pattern of choice for WPF applications and I wanted to demonstrate how I incorporate the Kinect runtime within the MVVM pattern.

View the full post, sample code, and screen cast here: http://kindohm.com/2011/07/20/KinectMvvm.html