The best book of rhyming ever! Pretty sure Dr Seuss invented rhyming. The illustrations are like an acid trip, so always a good book to read to your kids. I've read this many times and it's my favourite kids book.

EDIT: just read this two more times to my daughter. I've read quite a few Dr Seuss books lately and this is still easily my favourite. During this reading I realised how much my daughter is like the green eggs and ham hater in the book, getting her to try stuff is really difficult. Next time I'll be able to annoy her with lines from this book until she gives in and tries it.