Trilight Zone

[digital8]

Well, this one is kinda stupid, but whatever...
There are websites that allow you to capture satellite photos of places in the world. If you find someone really stupid, you could find his country and his city and then grab a satellite picture of his city and tell him that you hacked a satellite a long while ago and you're using it to home into his computer's signals or something. Some people will actually believe this crap.
You can grab satellite photos at http://terraserver.microsoft.com/default.asp. Simply click on the appropriate area in the world map.
If you don't know where the country and city of your target is located, consult map.com's search or weather.com's weather maps. Also, cnn.com's weather maps may be useful as well. Once you find a map of the target's location, return to the TerraServer (the satellite page) and grab a photo of this area.