Also posted this in the other Napa/Sonoma thread that's gone around. There are a couple interesting pieces that have appeared about Sonoma, in particular Healdsburg, in the past couple days:
From the NY Times:
http://www.nytimes.com/2005/08/03/dining/13sonoma.html?
There's also this piece from this month's Wine Enthusiast:
http://www.winemag.com/issues/aug05/sonoma.htm