Phoenix, Tucson, and certain areas of Chicago contain high resolution images to boot. Also, a cool new feature is "the ability to pan up in most new cities." Peeping jokes aside, Street View is a pretty cool feature especially if you’re looking for a particular building that you’ve never been to before. I just moved to Boston and am eagerly waiting for Google to add my new stomping grounds to the Street View family so I can figure out where the hell I’m going since there aren’t any street signs here.
More Street View cities to explore [Google Lat Long Blog]