Jim Hugunin, of AspectJ and JPython/Jython, has made a preliminary version of Python that runs quickly on .NET. This is a very big deal big in that to date the only third-party dynamic languages for .NET have been conspicuously low-performance. At the "Alternate Languages" BoF I hosted at the PDC there was clearly a little nervousness that some unknown "mistakes had been made." So Hugunin's "IronPython" is an important existence proof. But it's not available yet -- he sent a tantalizing message to the .NET Language Dev mailing list and then says "Oh, by the way, I'm off for a month..." What a tease!