Chris Pendleton recently wrote a mashup for Virtual Earth (Live Maps) that provides and address and a latitude/longitude whenever you click on any location on the map. After you install the app, click anywhere on the map and you'll get a pushpin. Hover over the pushpin and you'll get a pop-up that shows the nearest address to that point on the map as well as the lat/long of that location. He has now also added a link to the pop-up that will show you a Bird's Eye Photo of the location as sort of a picture-in-picture option. (see the picture to the left for an example). The app is available for download from his SkyDrive from here. If you want to help him improve the code, he has posted it to his site here.