One of my favorite children's book authors/illustrators is Irish-born Oliver Jeffers. His illustrations are so simple and quirky, and that's just what I love about them! I'm pretty sure when I read his books to children, I enjoy them more the kids.
Anyway, not only is he a children's book author/illustrator, but he's also an artist! One day I hope to have a house full of his books, paintings, and sculptures. Until that day, I will have to be content checking his books out of the library.