I have posted my first XNA Tutorial over to the new Xna3Way site that Chris, George, and I are partnering on.
This tutorial is on building a robust Sprite Animation Framework. In this tutorial, we discuss building a Sprite Animation framework that you can use to do all sorts of cool and complex animations of sprites. The framework we implement is very simple. At the same time, it also enables some pretty complex behaviors via animation composition. So make sure to check it out.
Disclaimer The opinions expressed herein are my own personal opinions and do not represent my employer's view in any way.