where the wild things are, maurice syndack. great book, i really enjoy doing the monster dance, RRRoooAAArrr my 2 year old enjoys it also.
lemony snicket's stuff is good. gris grimly's takes on some of the classics are fun. dahl has been mentioned. gorey ..... he's the best.
Best book I have ever found is What is God? Its the most beautiful book that does not try to personify the concept of God....nor does it sway any way but to the feeling of connectedness that one truly feels when they have tapped into the universal consciousness, Awesomeness!