I'm not big on passing along links and stuff, because I see so many already here, but I couldn't resist. This one is REALLY cute if you're out of work.
(And for those who care - my recent unemployment is about to come to an end after about 2 and a half weeks I think. The downer is it's gonna take two hours to get to work. But hey - I guess this is what they call character building or something.)
Anyway, give it a look. Probably best if you're on a cable modem or you're gonna be waiting for awhile.
Take a wide view of the United States in Google Earth. Thanks to one man it now it says: 'Read Ayn Rand' In short, man takes about a month to scrawl a huge message across the face of the United States.