I can't remember, but when I was really young (5-6) I used to love the Bernstein Bears and Richard Scarry.
Green Eggs and Ham always kicked some serious literary ass Shel Silverstein's Where The Sidewalk Ends was also pretty good.
I loved James and the giant peach too.. I loved The giving tree, It makes me cry every time, A medieval feast, Read all the berenstein bear series, all the R.L Stine books.. so many others.. Wish I could remember them. I am gonna be an aunt soon and I want to make sure my niece finds out how wonderful books can be. I cant wait to take her to a book store and read to her. Its gonna be amazing.
Oh I also liked The Restaurant At The End Of The Universe. It was part of the Hitchhiker's Guide To The Galaxy series, but it was the only book I read from the series. lol It was fuckin hilarious.
I have been getting my nephew lots of books and maps, so far his favorite is a coffee table book bigger than him about steam trains (he loves thomas the tank engine) it's even got a picture of one of the old V&T trains that's at the museum in carson, so he can actually see the train from his book.
the velveteen rabbit this copy/illustrator, in particular: http://www.amazon.com/Velveteen-Rabbit-David-Jorgensen/dp/0679803335 i still have it around the house somewhere
I looooove cloudy with a chance of meatballs.. I just didnt remember the names.. had to google image search to make sure.. yay now I can buy it!!
I really liked There's a Wocket in my Pocket by Dr. Zeus and a book called My Mother is Weird. I usually preferred interactive stories where my mother had voices, could sing to me, or I had a role somehow and participated. It always got my goat when something went beyond the pages.
theodore giesel wrote some amazing stuff, and usually in some kind of iambic meter (usually septameter)
Also, Alexander and the terrible, horrible, no good very bad day. that was an awesome book. i love childrens books. Its how I learned the english language.