I saw the film this afternoon. It was a fun little confection of a film, light, sweet, easy to digest, with a palatable moral. The graphics were dazzling, the character design top-notch, and the depth of field in the backgrounds made it hard to believe it came from the same company that gave us those claustrophobic Ice Age movies. But Jim Carrey as Horton was the biggest surprise. Sure, Horton does spazz a bit now and then, which is not a personality trait evident in the earnest, loveable lug Seuss created for his book, and yet...somehow it works in this movie. (I know, I'm surprised as you are). In point of fact, Carrey's bouncy, freewheeling performance is subdued enough to lend credibility to Horton's credulousness, to make plausible Horton's instant acceptance of the notion that an entire civilization dwells in a dust speck perched precariously on a clover. This is because Horton has imagination, as he demonstrates in frequent self-indulgent monologues which range in subject from local wildlife to the vast unknown realms that lay within and without us. In other words, Carrey's trademark random vocalizing of disparate ideas actually serves the story in this film. It deepens Horton's character. Who'da thunk it? I know I didn't when I first read who was cast for the lead in this film. But I'm delighted to report that Carrey's a great Horton. My fears were unrealized. Plus he's supported in the voice crew by the droll Steve Carrell (as Horton's mouse-like friend Morton) and by the terrific Carol Burnett, here playing a snobby paranoid kangaroo. This movie could have been a mess, an annoying, loud, crude, ugly update of a children's classic. But it's not. It respects the source material (there's even a voiceover now and then quoting from the book), Horton and the Whos look like Seuss' drawings and yet have the breathtakingly realistic mass and elasticity the best of CGI can offer, and the book's central message - "a person's a person, no matter how small" - is upheld again and again through the protagonist's determination to protect and believe in something he can't even see. Best of all - there's wry humor in this film, there's even a very slight touch of irreverance...but there's not a speck of cynicism or vulgarity anywhere in sight. In this Nickelodeon-infested age of mean-spirited children's entertainment, that is a rarity to be cherished.
So I'd hardly call "Horton" a hack job. It's smart and sweet. JMHO.