I received one from Ban Ki Moon that is so courteous and well-written, it can only be true!
Colibri
22
Hey, I got one from him too! Also the widow of Yasser Arafat.
The ones I got from Flora Dumbo, Akiiki Kissa, Srta. Blessed Lama, and Tit Cherieff were less well written.
One of the funniest ones claims to be German and then signs with an African name (while giving a German name for his lawyer):