Over at the Google Earth forums, a user called Thomas de Bruin has assembled a complete alphabet made of shapes spotted in the Dutch landscape by the Google aerial cameras.
He has created capitals, small letters, and all kinds of miscellaneous characters, such as the ten digits and the euro character. You will also find a KMZ file there, so that (if you have a copy of Google Earth installed) you can look up what part of the Netherlands you are looking at.
(Link: Google Earth Blog.)