I did not see this one coming but it makes a lot of sense. Google purchased GrandCentral, a very useful online service that provides a unified "inbox" for all of your phone numbers. I first encountered GrandCentral at DEMOFall last year and have been tracking the enhancements and improvements in the service ever since.
There's not a lot of information available yet about the acquisition (I learned about this in an e-mail alert from the NY Times a short while ago) but I have no doubt that additional details will be forthcoming. When I logged into my GrandCentral inbox, there was a voicemail waiting from the company's founders assuring me that this was a "good thing" and that being part of Google will make the service more available, more scalable, and better supported. When more information becomes available, I'll update this post.
Update: Here's an FAQ about the acquisition.