I dunno if it's just my Wii that does it or not, but check this out for yourselves. Load up the Metroid Prime 3 Preview channel, then look at your Wii, notice the blue disc drive light flash real quick? I'm thinking there might be some unlockable content or something when you have the actual Prime 3 disc in your Wii when you load up the preview channel.

Anyone else have any opinion to opine with?