I was surprised how many this guy has done so far. Couple were good.. http://www.flickr.com/photos/joefxd/sets/72157604423778692/
I have to wonder, how smart is it to post this on the web? I realize that defacement of currency is pretty far down on the list of priorities for the Secret Service these days, but this guy is sort of going out of his way to show the world that he's doing this.