According to Narayanan Shivakumar, those Googlers at the relatively new Kirkland, WA labs have been quite productive hackers (PDF):
Since then we've attracted many engineers who were tickled silly about working on large clusters of several thousands of machines, not to mention shipping web and client-based consumer apps used by millions of people. In the last two years, our Kirkland engineering team has conceived and launched a dozen products ranging from core search product improvements to Ads Optimization, Sitemaps and Webmaster Central, plus such consumer applications as Google Talk, Chat, Pack, Video, Music Trends, and mobile SMS.