The Obama administration recently responded to a petition asking the government to "require free access over the Internet to scientific journal articles arising from taxpayer-funded research."
I first heard about the petition on Google+, and am very proud to be signature #52. Back then 25,000 signatures seemed like a tall order for what is a somewhat niche area. In the end, the petition gained over 65,000 signatures and an official response from the White House. The Open Science Federation posted a screen capture of the 25,000th signature landmark on June 3, 2012. John Wilibanks started the petition with signature #1.