I found this post last week from Todd Bishop, local Seattle PI writer and blogger that tracks all things Microsoft. He linked to Michael Gartenberg's blog entry on Windows Speech Recognition (WSR). There, Michael says:

I’ve been using the integrated speech recognition in Windows Vista for the last few days, for a variety of tasks and in a variety of applications. I’m pleased to say it works well, and greatly improves the usability of my computer for entering text. It’s so darn good, it feels a little bit out of science fiction. But then again, isn’t that the way technology is supposed to work?

Thanks Michael. Glad you like it!