May 2009 bestselling children's titles at Amazon.com: see list.
List includes The Last Olympian (Percy Jackson and the Olympians, Book 5) by Rick
Riordan and Oh the Oh, the Places You'll Go! Deluxe Edition by Dr. Seuss.
Baby's best selling books (under 3) can be found here and includes:
Where the Wild Things Are by Maurice Sendak
Peek-A Who? by Nina Laden (Author)
The Very Hungry Caterpillar by Eric Carle
and Goodnight Moon by Margaret Wise Brown (Author) and Clement Hurd (Illustrator) (this book is ranked 4.5 out of 5 based on ... not less then 619 customer's reviews!!! )
My personal opinion: books are excellent educational tools, babies love them (it takes a little exercise at the beginning) and are (most of the time) cheaper then toys, so invest in books:)
Have a nice day.