I've read several reports recently that imply that when Blu Ray really gets into its stride it's going to find a use for all that extra disc space it has available. And that use will be ... greater interactivity and web-based activities. My gut reaction is WHY??? Here we have the golden opportunity to put things on a disc that are useful to the movie (PIP, extras in high def, top bitrates etc), and we're going to throw it away on kids-level stuff (okay, I grant you that this is fine if it's a kids' movie, but not for adults). I'm hoping that either (a) the stories I've heard are BS or (b) that this interactivity will actually be useful and I've just failed to understand things. Please can someone enlighten me?