I love the work of William Blake. It reminds me of the enormous value of imagination, inspiration and individuality. Many will know about Jerusalem and The Tyger. I thought I'd include a few Blake poems that I really like but that are a bit less well known:
The countless gold of a merry heart,
The rubies and pearls of a loving eye,
The indolent can never bring to the mart,
Nor the secret hoard up in his treasury.
Auguries of Innocence (first four lines)
To see a World in a Grain of Sand
And Heaven in a Wild Flower,
Hold Infinity in the palm of your hand
And Eternity in an hour
Nov 28th this year was the 250th anniversary of his birth, yet his exact grave is still not marked out properly - go to here to sign the petition in favour of erecting an appropriate monument on the exact burial spot. You can also find a lot of interesting information about Blake on this site. There is also a BBC poll about having a monument/memorial you can vote in and a useful article to read if interested.
Blake's words set to music here on this MySpace are great (I found The School Boy especially moving). More about his life and art here too (there loads out there to find - take a look!).