In reply to Blue Straggler:
Oops, sorry about SK. Perhaps I'm just a little bit too keen about movie making. And in this modern world the sneer often takes people further than enthusiasm ... oh, well ... but only for a while, I think ...
To get back to your main question. What a film like Life of Pi (or The Hobbit) amounts to is an utterly invisible new kind of animation, that doesn't look like animation at all. I would say that The Hobbit is the very first movie I've seen that crosses that line completely (the earlier Lord of the Rings movies look like prototypes by comparison). Before that, it was CGI 'writ large', mostly pretty successful, but very tacky and phoney at the edges. Now, at last, the technology has dropped away, and we come back to the good old business of storytelling in which the craft doesn't show. In which the movie magic is so seamless that we can't really even guess how the conjurer has done it. Because movies have always been a kind of magic.
(PS. In case you haven't realised, I'm quite a light-hearted and humorous kind of guy, so could I in turn make a plea that you don't always sound so bad-tempered and self-righteous in every single post you make? You speak always as if from some great height, which can be quite galling to those who've had quite a lot of experience at the coal face.)