Yes, the entire thing, Calico.
Probably easier actually to just visit the Kathack site here...
http://kathack.com/There are instructions at the top, bookmark the very first link(it just says 'Katamari') and then open it on any website, for example, once you have it bookmarked, visit the PS forums frontpage and then select the Katamari bookmark you've just saved and see what happens, it's fun for 5 minutes.