[Crippler]

The Zune team has been releasing Ninja Gaiden 2 content for the Zune. You can add Ryu and now Cia Sonia to your friends and get exclusive content.

Here is the Ryu page: Zune Insider : Zune and Ryu Hayabusa (Ninja Gaiden 2)

..and here is Sonia's: Zune Insider : More on Ninja Gaiden 2: Sonia, New Backgrounds

They have a few Zune backgrounds available on Sonia's page too.

Jesus, with playing GTA4, I forgot this game hits next week. Sweet/