For my daily work of pounding out code, I'd certainly want none of this going on. I always disable silly OS animations. However, for my 2 kids who instantly 'get' my iPhone and iPad but feel less secure with my MacBook, I think Movie OS is the kind of thing that would convey useful meaning ... until they understood it all and the varnish wears off and they're asking how to disable the Movie so they can work with the OS.