NASA has had a big year with social media. One of their blogs describes it all here.
We have followed NASA's work in this area since 2007. We have interviewed Kennedy Space Center blogger Cheryl Mansfield and Bob Jacobs, deputy assistant administrator for public affairs. And we look for excuses to write about their social media projects as often as possible.
Municipalist's full list of Q & A's with leaders of local, state, and federal government social media projects is here.