Microsoft has released an application for your smart phone so you can keep track of everything Xbox 360, 'My Xbox Live'. I know, I know, there are a few apps that already do this, but this one does all of those things better.
Using their Windows phone interface, 'My Xbox Live' lets you watch the spotlight videos you would see on your regular dashboard at home. It lets you go through your friends lists so you can view their bios and compare games, there is a message area to send and receive messages. And brand new to your home dashboard, beacon setting. This app will also allow you to set beacons for games so your friends will know what game you are down to play and when you want to play it. And if you want to fuck around with your avatar you can do that as well.
You can check it out over at Apple here.