The same basic scenario that's already been described here occurred today with this phone number. I don't have any additional information about the caller.
Now, contact the bank the check is drawn on to verify it is bogus or take it to your bank and ask to speak to someone who handles check fraud. Bring all the documentation including the FedEx mailer with you. Let them investigate and turn everything over to the proper authorities. Only if people take these extra steps will this scammer possibly be arrested along with any accomplices. Doing nothing will simply allow him to scam more victims.