This can be thrown down into the xbox live thread, but i just noticed that whenever you shake your phone, your avatar character falls to the ground...its QUITE funny...i thought that was a neat little easter egg by microsoft
Try moving to the screen with your friends and messages tile on it and ignore your avatar. (You might have to keep touching the screen to stop it locking too quickly)
He will sneek off in an amusing way, also start up some music in zune and keep it playing, then load up your avatar and he'll have a little dance to himself. (Play music before you load up games hub)
And as you know shake your phone and he falls down, shake it 3 times and he gets annoyed and stamps his foot and breaks your screen. He will also drag your menu off the screen too.
Sorry if you already knew about these little goodies but loads of users don't.
I never tire of these things lol
Oh and welcome along to WPC WPGenius.