Another one I love is Fred Marcellino. Unfortunately, it is way too difficult to find a single website where you can check out all his work up close. His book 'Ouch!', a retelling of a Grimm fairytale, was my first experience with him. I found it captivating, for the storytelling as well as the artwork.
Here are a few of his works: http://www.pulcinellapress.com/about_fred_marcellino.php. But it's better to just go to a library and check out some of his books. He was a fantastic illustrator.