You must obey me:
Give it time to load and make your browser full screen so it tiles every available pixel.
As you have now recovered from the seizure, I’ll explain. A few months ago a friend sent the animated gif below. It’s been floating around the net but I haven’t been able to figure out who first created it. (You’ll get the original if you click on the image – wordpress.com is exceedingly and inscrutably not fast for this file.)
I put it on the TV screen and the kids stared at it for a long, long time. But I thought, what would make this better? It was not nearly busy enough, and my screen was a lot wider than the image. All those pixels lying fallow made me sad. So I made a new version with a horrific script and ImageMagick, using different combinations of rotating the original image vertically, flipping horizontally, and time shifting. Now it tiles both vertically and horizontally.