This link I found by accident and I love it! The art work of Banksy lives and breaths on the streets of the UK, I think a book has been published but this link is a pool of photo's taken of Banksy's art work. So now you can appreciate the talent in the comfort of your home or art class!
It's a great use of Flickr, creating a focused pool of photos on an artist/theme. Perfect for the art teacher who wants to access a large collection of resources on a particular artist for use in class.