Check out this link to GovFresh.

It has live feeds of various government news from all the branches of the government as well as agencies like the CDC, the CIA, governmental departments like the Department of Agriculture, Homeland Security, and education.

It describes itself: "GovFresh features Gov 2.0 news, TV, ideas and live feeds of official U.S. Government social media activity, all in one place."

Here's a fun sample: watch a government-sponsored public service announcement with Elmo and seceratary of state Kathleen Sebelius.