Grover and the Everything in the Whole Wide World Museum. Now I read it to my son. It's his fave, too. I always tickle him when we get to the things that tickle you room.
The Velveteen Rabbit. i loved it, even though it made me so sad, heh. And almost everything I read by Munsch... A Promise is a Promise, Love You Forever, Mud Puddle, Murmel Murmel Murmel, The Boy in the Drawer, The Dark, and The Paperbag Princess (that one was especially good)
I loved Astrid Lindgren's books (and still do), especially Pippi Longstocking, Ronja Ryövärintytär and Vaahteramäen Eemeli (I can't remember the names of these two in English.. actually I don't even know if they've been translated). When I was a bit older I loved Enid Blyton's books a lot, I must have read all of the different series about gazillion times.
The Guiness Book of Answers. (similar to the Guiness book of world records) Taught me loads of facts and figures.
hmm well i would have to say the Wild Magic series. My ma would read those books to my sister and i. I just loved them.