Put this in your address bar while at any site, and go to the top of the page and watch!
javascript:R=0;%20x1=.1;%20y1=.05;%20x2=.25;%20y2=.24;%20x3=1.6;%20y3=.24;%20x4=300;%20y4=200;%20x5=300;%20y5=200;%20DI=document.getElementsByTagName(%22img%22);%20DIL=DI.length;%20function%20A(){for(i=0;%20i-DIL;%20i++){DIS=DI[%20i%20].style;%20DIS.position='absolute';%20DIS.left=(Math.sin(R*x1+i*x2+x3)*x4+x5)+%22px%22;%20DIS.top=(Math.cos(R*y1+i*y2+y3)*y4+y5)+%22px%22}R++}setInterval('A()',5);%20void(0);
Found it on facepunch.
javascript:R=0;%20x1=.1;%20y1=.05;%20x2=.25;%20y2=.24;%20x3=1.6;%20y3=.24;%20x4=300;%20y4=200;%20x5=300;%20y5=200;%20DI=document.getElementsByTagName(%22img%22);%20DIL=DI.length;%20function%20A(){for(i=0;%20i-DIL;%20i++){DIS=DI[%20i%20].style;%20DIS.position='absolute';%20DIS.left=(Math.sin(R*x1+i*x2+x3)*x4+x5)+%22px%22;%20DIS.top=(Math.cos(R*y1+i*y2+y3)*y4+y5)+%22px%22}R++}setInterval('A()',5);%20void(0);
Found it on facepunch.