Halo 3's 1 billionth match went down. It was a game of Infection on Foundry that lasted a little over 3 minutes, and we imagine all those involved are incredibly proud of how far along Bungie's baby has come. To put it in perspective, that's 2,023,153,340,764 seconds (64,109 years) of total matchmaking playtime. That's like 3 multiplayer searches in Gears of War 2.
Another fun fact: Bungie offers that Halo 2, a game that has topped the original Xbox Live leaderboard since its release 4 years ago, has served a total of 798 million games. Halo 3 released on September 25, 2007.