Whilst we were at the Birmingham Museum and Art Gallery last week, the boys and I visited the Waterhall gallery to view the Superduperspective paintings of Patrick Hughes.

The pictures are painted on shaped canvases so that as you move around them they give an impression of depth. The depth, however, seems to move the wrong way as you move. This video shows it quite well.
This video shows how the effect is created.
More videos after the jump: