We've recently published a case study and video highlighting British Petroleum's use of Virtual Earth - see it here: http://www.microsoft.com/presspass/features/2007/mar07/03-07crisisresponse.mspx. Now, I love to demo this application - it's a powerful illustration of what Virtual Earth brings to the table in terms of data visualization. If you're trying to prove to someone that you want Virtual Earth in your enterprise or need some validation of geography as a backdrop for data, well, here it is.