Don't know if people have already posted about this, but there's a great article over on NASASpaceflight.com. Here's the opening paragraph...
Today marks the 2,000th Martian day (Sol) of operation for NASA’s Mars Science Laboratory – more commonly known as the Curiosity rover. The exploration platform touched down on the surface of the Red Planet after a daring and never-before-used landing sequence on 5 August 2012 (Pacific Daylight Time) and has since well surpassed its initial science goals as its science teams plan for the rover’s future.