At the moment I've got into reading a lot of poetry, such as Tennyson, Keats, Wordsworth and Coleridge. I don't think you can beat a really good poem that can make you speculate as to its true meaning.

As far as books go, I'll read anything that looks good from the blurb. I like stories that involve animals (of course) and also those that are about the ancient civilisations, such as the Greeks and Romans.