According to Mobiletracker (cellphone news and reviews), Jimmy Buffet's phone was stolen, so some rather important people might have to change their numbers:
"Musician Jimmy Buffet recently lost his Sony Ericsson phone, which although was returned, was missing its SIM card. Busboy Jason Martin was in possession of the phone when the Secret Service found it. Why the Secret Service? The phone's SIM card had contact info for both Bill Clinton and Jimmy Carter. Other celebrities with numbers that may have to change include actors George Clooney, Michael Douglas and Harrison Ford as well as Microsoft co-founder Bill Gates."
There is a lot of interesting stuff in this article. First of all, I'm assuming the Secret Service found the busboy using the implanted GPS in the phone. It's always nice to know the government can find you immediately if it really wants to. Second, how many nonfamous people who have their cellphones stolen get them back? Third, how many famous friends has Bill Gates bought anyway? Fourth, and most important, is Jimmy Buffet the most powerful man in the world?