One of the things we talked about was the network play, and we've had people doing prototypes internally of multiplayer shoot-'em-ups both in versus and co-op.
Most gamers will not head out to buy a Zune for a few co-op shoot em ups; however, the Zune is a fairly full featured device already, and adding a few games to the mix would certainly help it stand up to Goliath. Current Zune owners and those on the fence might keep this news in mind.