Last year, Microsoft's Channel 9 interviewed Windows expert Mark Russinovich to discuss many of the refinements and new features introduced in Windows 7 to ensure it would run and scale better with newer hardware that previous versions of Windows. To celebrate Windows 7 release, Channel 9 has interviewed Mark again to talk about the rest of the new technologies and changes that, due to time constraints, were not discussed in the first interview.
It's a pretty long video, but if it's like the first one (which I advise you to watch prior this one), it's worth the time. Specially interesting is the demo showing Windows 7 running on a machine with an astounding 256 processors. User machines won't be hitting that ceiling anytime soon.
via Mark's Blog