There are new Halo 3 Gamerpics and a new Theme in the XBL Marketplace. It's in Gamerpics under Best Buy and it's free. They're really good, check them out.
Another cool bit of news: During the launch period of Halo 3, the 25th, 26th and 27th of September, Best Buy will be sponsoring the Xbox Live Gold service and making it free for everyone. Link.
Last thing is: A new Bungie podcast is up and has Campaign Mission Design Lead, Paul Bertone. Link.
I will probably go out and pick up a copy of Skate. The CoD4 is still fresh even though there's only three maps. I've started to experiment with weird Perk cominations and the newly unlocked Uzi. That's all for now, still got chances later in the week to get CoD4 tokens.