Mosaic posters made with Lego bricks are a dime a dozen, but this one is different and absolutely awesome: a lenticular poster that makes Batman transform into the Joker as you pass by. And the Brian Bolland's versions, no less.
It was made by Arthur Gugick. I wish I could buy it from him and hang it in my home. [Flickr via Brothers Brick]
DISCUSSION
Were the bricks custom painted on each side? Can't understand the drastic color changes.
Whatever, it is awesome so why question it.