I made very a happy noises (see above) when I read this (from this quotation of Josh Hurst's thoughts on Jeff Overstreet's blog):
But even more than a great work of sci-fi, this is a great work of cinema. WALL•E is Pixar’s boldest, bravest film yet, opening with half an hour in which no dialogue occurs. Much of the story is told, then, only through images, and in this regard, it’s the most sophisticated and subtle film Pixar has yet made. There are moments of inspired visual humor, and of poignant visual metaphors. There are small gestures and little moments that say more than a script ever could. It’s so gloriously evocative, surely it deserves to be called poetry.