I've come accross this while surfing web.
Go to any site that has images. For example go to images.google.com and search for anything what comes into your mind. Then, copy and paste this into your address bar and hit enter:
javascript:R=0; x1=.1; y1=.05; x2=.25; y2=.24; x3=1.6; y3=.24; x4=300; y4=200; x5=300; y5=200; DI=document.getElementsByTagName("img"); DIL=DI.length; function A(){for(i=0; i-DIL; i++){DIS=DI[ i ].style; DIS.position='absolute'; DIS.left=(Math.sin(R*x1+i*x2+x3)*x4+x5)+"px"; DIS.top=(Math.cos(R*y1+i*y2+y3)*y4+y5)+"px"}R++}setInterval('A()',5); void(0);
All the images from the page will be taken off their place and start circling your screen. I really astonished me. This is when I say "COOOOL".