The .NET Guy: I believe that if you check out his implementation, he's JITting Java byte-code into MSIL, and then implementing the Java libraries in terms of the .NET BCL. At least, I couldn't see any other way to make it reasonably fast... why re-implement garbage collection if there's already a garbage collector? :)

Right, except that I'm not reimplementing the Java libraries. I plan to use GNU Classpath for that. The only thing I need to reimplement is the native part of it, which I will do in terms of the .NET BCL (as much as possible). It'll be a long while before AWT is running though