Love Katamari? Play it on any webpage!

Simply load any page and then copy & paste the following in the URL bar:

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);

[source]

You'll be glad you did (until you waste all of your time doing this). 
Works best in Chrome or Safari.