Panoramic Earth maps 360 degree panoramas from around the world. Each panorama includes a local description and visitor reviews. One very nice feature of the maps is the direction finder that indicates your virtual view as you navigate the 360 degree panorama.
Panoramic Earth also provides the option of embedding the content in another web site.
360Cities have recently redesigned their site of panoramic images. They have now mapped over 5,000 panoramic QuickTime Movies for 45 cities around the world, with 'many more to come'. The new home page of 360Cities has some 'Twittervision' style animation between the mapped cities.
Other Maps of Panoramas