This Joker Claims He is FBI

This con artist letter has a FBI symbol on it.  It's still a con that came via my email account:

FBI Headquarters in Washington, D.C. Federal Bureau of Investigation J. Edgar Hoover Building 935 Pennsylvania Avenue, NW Washington, D.C. 20535-0001
	REF: US/28028/8A28/11
ATTN: RECIPIENT This is to officially inform you that it has come to our notice and we have thoroughly completed an investigation with the help of our Intelligence Monitoring Network System that you legally won the sum of $800,000.00 USD. from a Lottery Company outside the United States of America. During our investigation we discovered that your e-mail won the money from an Online Balloting System and we have authorized this winning to be paid to you via a Certified Cashier's Check. Normally, it will take up to 10 business days for an International Check to be cashed by your local banks. We have successfully notified this company on your behalf that funds are to be drawn from a registered bank within the United States of America so as to enable you cash the check instantly without any delay, henceforth the stated amount of $800,000.00 USD. has been deposited with Bank Of America. We have completed this investigation and you are hereby approved to receive the winning prize as we have verified the entire transaction to be Safe and 100% risk free, due to the fact that the funds have been deposited at Bank Of America you will be required to settle the following bills directly to the Lottery Agent in-charge of this transaction whom is located in Washington D.C, U.S.A. According to our discoveries, you were required to pay for the following - Deposit Fee's (Fee's paid by the company for the deposit into an American Bank which is - Bank of America) Cashier's Check Conversion Fee (Fee for converting the Wire Transfer payment into a Certified Cashier's Check) The total amount for everything is $550.00 (Five Hundred and Fifty USD.) We have tried our possible best to indicate that this $550.00 should be deducted from your winning prize but we found out that the funds have already been deposited at Bank Of America and cannot be accessed by anyone except the legal owner (you), the winner; therefore you will be required to pay the required fee's to the Agent in-charge of this transaction via Western Union Money Transfer Or Money Gram. In order to proceed with this transaction, you will be required to contact the agent in-charge (SILVESTER JOHNSON) via e-mail. Kindly look below to find appropriate contact information: CONTACT AGENT NAME: SILVESTER JOHNSON E-MAIL ADDRESS: agent.silvester.johnson112@gmail.com You will be required to e-mail him with the following information: FULL NAME: ADDRESS: CITY: STATE: ZIP CODE: DIRECT CONTACT NUMBER: You will also be required to request Western Union details on how to send the required $550.00 in order to immediately ship your prize of $800,000.00 USD via Certified Cashier's Check drawn from Bank of America, and also include the following Fund Reference Identification : EA2948-910. This letter will serve as proof that the Federal Bureau Of Investigation is authorizing you to pay the required $550.00 ONLY to AGENT SILVESTER JOHNSON via information in which he shall send to you, if you do not receive your winning prize of $800,000.00 we shall be held responsible for the loss and this shall invite a penalty of $3,000 which will be made PAYABLE ONLY to you (The Winner). Please find below an authorized signature which has been signed by the FBI Public Affairs Director - Robert Mueller Robert Mueller Public Affairs Director - FBI. NSB SEAL ABOVE