Harold and the Purple Crayon

Little d and I were happily bombarded with many children's books for Christmas gifts and baby showers. Gee, I wonder how everyone knows she's going to be a reader... oh yes, of course. Anyway, we we're reading Harold and the Purple Crayon and it made me think of my favorite books as a tyke which were the Curious George series by Hans Augusto Rey and Margret Rey. d's favorite was a colorfully-illustrated collection of Mother Goose nursery rhymes.

What is your pick from childhood? I'm looking for many suggestions, starting from the pre-reader stage all the way up, to continue building on the kid's section of our library.