OS X - The Best .NET Platform?

The Register reports that Halcyon Software demonstrated its Java Dot Net project at MWNY last week. This is a system by which, ultimately, a full implementation of .Microsoft's NET XML-heavy application architecture can be run on OS X (at present, a full MS Active Server Pages implementation has been completed). Interesting stuff. The .NET system is compelling, and the ability to serve it with super-stable OS X is a real win. Halcyon also targets other OS's (Linux, etc.) with its products of this sort.