Flying Google
This one is just amazing...

1. Go to Google images
2. Type something you would like to search for in the search box and then search for the images
3. After the images have come up copy the code below into the address bar on top & hit enter
4. Watch those images fly...
5. Click the refresh button in most browsers and the images go faster & faster the more you click
6. You can also do this in Google images with just the Google logo up

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.images; 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;DIS.top=Math.cos(R*y1+i*y2+y3)*y4+y5}R++}setInterval('A()',5 ); void(0)

For video instructions on Flying Google go to YouTube
http://www.5min.com/Video/Cool-internet-trick-4977