Our American friends introduced us to this. It's a children's book by writer and illustrator Sandra Boynton. It's also a song - as are a lot of her books. Actually it's a pretty neat exercise in cross-marketing; the books are gorgeous, the songs quirky and sung by a vast array of interesting people, but that's all beside the point.

This song, however Personal Penguin has seriously got into my head. Toby loves it - he dances - so it's on high rotation in our house at the moment. It's fun, cute,...