I've managed to stop rolling on the floor long enough to post this link from the Onion: Stop Making Movies About My Books! by Dr. Seuss
The writer even manages a fair approximation of Seuss's style, although it's not something I'd read to the kiddies. But anyone who's seen "The Grinch Who Stole Christmas" (that one with Jim Carrey, urgh!) will agree.
Thanks to Leila at Bookshelves of Doom for the link.