When DC1 was about 6 mths old I read 'Shoe Baby' to her everyday. It has wonderful pictures, and a 4 line rhyme on each page bringing the story along. I think it was this rhythm that held the baby's attention. It doesn't get much of a look in any more, its battered and loved and will be going in her memory box.
BUT I'm looking for something similar for DC2. My main criteria is the 4 line rhyming quality. We already have (and also love!) 'Giraffes Can't Dance'.