One of my favorite YA/children's authors was Roald Dahl. It's hard to choose a favorite book, but Danny is up there.
With Dahl's wackiness in his writing, it makes you wonder what he read! One source said the bottom three were his favorites - the first was also a favorite of mine, the 2nd is on my TBR thanks to @sprainedbrain , and the last I have never heard of!
Reading the blurb, I can see how that might be up his alley...