Cafe Wall Illusion (was Skewed Lines Saver)... I just found that the animated form of the Black and White Squares Illusion (also known as the Café wall illusion) is MUCH more interesting to watch.
So I made a screensaver from it. :)
What's new in Cafe Wall Illusion
Version 1.1: Now with configurable animation speed and block size. (Though I still find the default most pleasing :)
Oh, and I also fixed the buildscript so it now produces good zip files. Sorry for that on the first try.
Have fun trying it till your eyes become squared (as my boss uses to say. :)