When the first two films of an eventual trilogy are all sorts of wonderful, the third and penultimate chapter has a lot to live up to. Most completely fall over themselves. Think Spider-Man 3, X-Men: The Last Stand, and The Godfather Part III. But every so often, we get the rare threequel that is every bit as terrific (and maybe even better) than the films that preceded it. The gold standard has always been Toy Story 3, which (at the time) wrapped up Pixar's marvellous franchise in spectacular fashion. Move over,...