We have a couple of big ugly blank walls in here, so I was thinking of using the rasterbator to print up some stuff to hang. Then I couldn't think of anything to print, so I started looking at op art. Several search results ended up being optical illusions, and this one was bugging me out of the corner of my eye on the results page.
That is easily the most buzzy, weird one I have ever seen.
Still not sure what to put on the walls, but it's definitely not going to be anything like that.