Todd Bishop of the Seattle P-I has put together an excellent Microsoft Blog Directory. It includes links to webpages and RSS feeds for dozens of blogs by Microsoft employees and outsiders.
If you know of any worthy sites that aren’t on the list, use the e-mail link at the top of the list to send along the details.
Putting together this sort of resource is a lot of work, so kudos to Todd for doing this.
Ed Bott (@ wordpress.com) 
This is a great resource thanks.