I had a lot of fun using Jython ( http://www.jython.org/ ), which is an implementation of Python ( http://www.python.org/ ) in Java. It is great for quickly scripting some tests to web service calls.
I then got excited to hear there was IronPython ( http://ironpython.com/ ), which I gathered was the same thing implemented in .Net. However it is not yet available for download at all, nor is there any indication as to when it will be.
Today I found another language called Boo, ( http://boo.codehaus.org/ ) which is a new .Net language, and seems to be 'inspired' by Python.
If anyone has experiences with Python implementations on .Net, I'd love to hear about them.