Let me direct you to a scene deep into the film by way of example. It is a moment where some of the toy protagonists realize that in spite of all their cleverness and determination, there’s no way out of the fatal trap into which they’ve fallen. In any other children’s film, this would be a time for comedic panic, long-withheld personal confessions, or dramatic statements that would immediately turn out to be ironic. In any other children’s film, the moment would quickly peak and pass. But Toy Story 3 director Lee Unkrich (Finding Nemo, Monsters Inc.) holds for long, excruciating moments on the silent characters, as they pass from disbelief into sorrowful resolve, then take each others’ hands and wait. And wait. And wait.
It’s a shockingly grim sequence, but this is what Pixar films do best: find a place of deep emotion and explore it without blunting it, overexplaining it, or passing it off with a laugh. Toy Story 3 never gets darker than this moment, but time and again, it similarly finds real, resonant emotion in the antics of a bunch of children’s toys having adventures when nobody’s looking.
Plus, I cried like a Baptist. Not once but three times. Three times, people! That's good film-making.