Well, it's certainly one of the more...unique...publicity campaigns I've ever seen, albiet one that will get little attention here in the States, as our newspapers don't go out of their way to publish photos of naked, priapic, giants (unless they're dating Lindsay Lohan).
The worst part about it is, being the UK, sooner or later, it going to rain and wash Homer away. Then the pagans will claim their "magic" worked. It would be funny if the area had a summer dry spell and Homer was still there a month from now.