In 2002 we found a book called The Red Tree by Shaun Tan in a small bookshop in Subiaco, WA. It has become a landmark for us. You can find out more about the book here and the film below is an animated version done by someone else. It gives a really good sense of it.
Everything Shaun Tan has done is wonderful and could be seen as having relevance to the experience of dementia. Recently a short animated film was made of his book 'The Lost Thing', and you can see a trailer below. The whole film is available to download from iTunes for £1.49.