Use a Microsoft Kinect to control the home automation in the house. Lights can be turned on an off from speech recognition or from pointing at them and waving your other hand one way to turn on and the other way to turn off.
The article shows how to embed a XNA-based game into a WinForms control with ease. Also, it explains how to integrate an XNA GS project into VS2008 (this IDE is not currently supported by XNA GS), and in turn, to be able to use WPF with your XNA-based creation.
Many available demonstrations and tutorials demonstrate how to play an animation generated in a 3D application. This tutorial demonstrates how to manipulate a 3D model using only the code to find and manipulate Bones within a simple 3D model generated in Blender.
A proof of concept for an animated sprite component that I am developing to run in XNA projects on Windows Phone, PC, and Xbox. The component allows animation information to be a part of the project's content and is a step in the direction of allowing an artist to be completely over creating animati