The latest one has been the one from Ghana that says they are going to send all my money back if first I register with them and send them money-- its just another scam -- so please be careful of this too-- it comes from a place called UNITED NATIONS RECONCILLIATION COMMITTEE
There is also another one where they will contact you saying that they are a lawyer or government agency that is fighting scam and that they are trying to recover your money . . . you just need to give them your bank account and they will put the money back into it. The truth is, once they have your account number they will drain the account.
This scam works because people are so stressed about the financial loss that they are willing to do this if it means getting all or some of the money back.