According to this, Microsoft is to hold an official Halo 3 tournament in Europe from March 18-30.
The tournament is being sponsored by Samsung and offers prizes including Halo 3 artwork, a Samsung 40” TV and an Xbox 360 Elite. To sign up, all you have to do is to click on the tournament adverts on the Xbox Live Dashboard and download the free gamerpic.
The top player from each European country will receive a piece of framed Halo artwork and will then go on to fight all the other Euro champs to see who'll be crowned the ultimate Euro cyber warrior. From the future.