To celebrate the release of Halo: Combat Evolved Anniversary, a new Halo-themed "Living Monument" has been erected. Gamers can add their image and name to the monument, which coats Master Chief's classic armor with photos from around the world.
Microsoft launched a more intricate monument near the launch of Halo: Reach. That monument formed an image of the Spartan Noble team out of points of light. A new live-action trailer set in the Halo universe was also released, found after the break.
BOOM video 11175
As a neat bonus, any image you upload to the monument site appears in the trailer above when viewed on the official site. So, have fun with that.