You might have heard about the junior Senator from Montana, John Tester, who has opened up his schedule to his constituents on his Web site.
Tester (who I was impressed with during the campaign and continues to impress) signed on to the Punch Clock Campaign, an effort of the Sunlight Network, to make the process of government more open and transparent.
The position of the Sunlight Network (rightly so) is that while openness has always been an imperative in a democracy, the Internet makes openness easier to achieve. They called on candidates to post their daily schedules online (at the end of the day, for security reasons) so that the public knew what their members of congress were doing, who they were meeting with, and who was influencing the political process.
The foundation also has an interesting blog.
While the Sunlight Network has focused on the legislative branch, I think this would be an interesting concept to apply to the senior leaders at the Department of Defense — to every day be able to see what the senior secretaries and service chiefs are doing, where they are devoting their resources, etc.
As long as standards were set to ensure that sensitive information was not published, this could be a major advancement in the open government movement.