Check out Birds eye view. Its limited availability, currently but the resolution is magnificent. I saw this yesterday, and amazingly Lexingotn, KY is included in the initial list, which is my hometown. :)
Major Nelson posted a link to Xbox HQ
Some links to Vegas bird's eye view are here.
I found them intriguing cause I stayed at the MGM Grand and the Stratosphere before. I scrolled all the way to the bellagio. Looks to me like the pictures are about a year old, based on Wynn(sp?)'s hotel, which is now open.
scouring local.live.com for you :)