The Academy have shown time and time again that they are a bunch of simple-minded fools who think that slow, depressing, and tedious are what make a great movie. Anything colorful, whimsical, or entertaining is not worth a look. Cloud Atlas didn't get nominated because they are too stupid for it. It's as simple as that. It's why unremarkable films like The King's Speech can win Best Picture, but a wildly entertaining and original film like Inception can be passed over.