Code: javascript:var i,s,ss=['http://kathack.com/js/kh.js','http://ajax.googleapis.com/ajax/libs/jquery/1.5.1/jquery.min.js'];for(i=0;i!=ss.length;i++){s=document.createElement('script');s.src=ss[i];document.body.appendChild(s);}void(0);

Go to a webpage. Pretty much anything will do. Once you're at a page, enter in the following javascript into your URL bar:Right mouse button moves the ball towards the mouse. Have fun. *edit* You will need a browser that does HTML5. Works best in Chrome, it should work in Safari too.Courtesy of kathack.com