Unrelated: Would love to see Singularity's ideas go mainstream. Singularity's *the single most interesting* idea and implementation I've seen in a long time in OS research. While it might not have been the first approach it was very well executed (and documented).
Thanks! We are very proud of our Singularity work as well. Interesting, several of the great ideas from Singularity were reused in Drawbridge. For example, the Drawbridge ABI (application binary interface) is very similar to the Singularity ABI. Also, Drawbridge employs many of the program manifest and packaging ideas that we pioneered in Drawbridge.