12 New US cities have been added to Google Maps Street View!
Albany and Schenectady, NY
Kansas City, MO
Research Triangle Park (Raleigh, Durham, Chapel Hill), NC
San Antonio, TX
Salt Lake City, UT
Street views are accessed on Google Maps by clicking the "Street View" toggle button at the top right of the viewport in Google Maps.
A number of sites have emerged that compile interesting street views. I am sure they will all be busy scouring the new cities for views to add to their collections.
Streetviewr (named as one of Mashable’s Top Seven Coolest Web App’s of 2007)
LaudonTech's Street View Gallery
Street View Fun