Channel 9 provides a double-feature for Microsoft Research's "Singularity" project in their Going Deep series:

• Singularity III: Revenge of the SIP (linked in the headline)

  It's been a while since we checked in with the Singularity folks over in MSR Redmond. You know, the usual suspects like Jim Larus and Galen Hunt. So, I went and visited them recently to see where they are with Singularity, see what they're up to, what's new... As you may expect, they are doing some really interesting work with, among other novel software constructs, SIPs (Software Isolated Processes). Learn all about them and how they are architected into the Singularity system. Yes, we get Galen on the whiteboard again. This time, you will also meet the newest member of the Singularity team, Mark Aiken, Software Developer, who's been working on some interesting hardware protection stuff in Singularity. It's always great to spend time with the Singularity folks. Oh yeah, this time we get a demo of Singularity.

• Singularity IV: Return of the UI

  Here is the long-awaited demo of the latest incarnation of Singularity, a research operating system written primarily in safe C#.