It's always great to see your General Manager excited about a feature you worked on.  It's nice to see him mention it in his blog.  It's even better when he sits down and writes an entire blog post about your feature!

I demo'ed the Extension Manager and SDK to Jason Zander (my boss' boss' boss' boss) a few weeks back.  He was aware of the feature and showed it at a few of his own demos but saw the end to end demo for the first time during my demo.  I'm glad he loved it and although there's still work for us, we're definnitely heading in the right direction.

You can read Jason's blog from here:

http://blogs.msdn.com/jasonz/archive/2009/06/01/visual-studio-2010-sdk-beta-1-is-now-live.aspx

After you've read it, go build your own extension and share it with the world! :)