my pick of the week is the Rx framework that was dropped stealthily (by accident?) inside the sliverlight toolkit tests
check out this thread for details
http://channel9.msdn.com/forums/TechOff/480432-Rx-reactive-framework/
Yeah! Finally widescreen slides! Enjoyable But why is the video 4:3?
Anyway;
I already use Windows 7 RC. It's awesome. I'm totaly look forward to the final version. It's so long 'till the public release
I was under the impression that you didn't need Win7 ultimate for media center.
Finches,
You're right, there are some other editions which come with it as well. The Windows marketing site has more.