I have to confess, I haven't even seen the live action Cat in the Hat.* Nor the Grinch. Why would I? I have the books and my children, thank goodness, are old enough not to beg to see these. The reviews of Horton haven't been quite so bad, but the anti-abortionists hijacking the tag line have annoyed me, so I'll probably stay away from that, too.
So, you know, I loved this. But it's not really G-rated, just so you know.
*imdb search terms include "Critically Bashed" and "Box Office Flop"