Head on over to https://madeby.google.com/phone/ right now (unless you caught it when the support portion was briefly available) to see 3D demos of the Nexus One, order one of your very own (complete with engraving) for $529.00 + Tax, and generally bask in the glow of a Google website that shows they're now completely and totally serious about the mobile phone space. Non-US citizens: we're sorry, but it looks like you're going to have to wait.
Looks like they'll be adding options to purchase the Nexus One with T-Mobile or Vodaphone soon-ish, not to mention the Droid on Verizon. You check out with Google Checkout and can have it FedEx'd overnight - though when it ships is (on my order at least) still a little fuzzy. Check out our Liveblog for more info