For those of you who prefer AT&T to T-Mobile, but wanted a Nexus One, today is your lucky day.  You can now buy the Nexus One with full support of AT&T and Rogers 3G frequencies.  Previously the Nexus One only supported the T-Mobile and world bands, but now allows for the additional frequencies for the crazies of the Americas.  You can get it now for $529 without contract and there is no subsidized less expensive option unless you opt for T-Mobile.

[Nexus One]