I recently taped a set of IronPython demos and they're now up on the MSDN web site.  It shows some interactive exploration and GUI building from the command-line along with a brief interlude on subclassing a C# class from Python.  It also shows how to simply embed a Python engine in a WPF application.  Take the MSDN folks seriously when they suggest disabling your pop-up blocker or you'll just get to see the fairly boring part of me talking and you'll miss out on the interesting part of the actual demos.  If you do watch the demos, please fill out the ratings as well as this helps MSDN decide what sort of content they want to present in the future.