Toddler Favorite

A friend's 18 month old makes it clear that LLAMA, LLAMA RED PAJAMA by Anna Dewdney is the book he wants to hear over and over again. It's on the book shelf where he can reach it, and he picks it from the rest of the shelved books, over and over again. He pats the book and calls it by name, his own version of LLAMA, LLAMA. Which book is your toddler's favorite bedtime story?