This is a sweepstakes scam.  A Christopher Banks who is mis-representing a company called American Sweepstakes Promotions is calling people and telling them that they have won huge sums of money and all they have to do is pay upfront 5% of the winnings.  American Sweepstakes Promotion has verified that they are not a part of this as I called the number this this company has listed on their web site.  
Do not pay anything to them.  Money never, never has to be paid upfront for a sweepstakes or any other contest.  NEVER.  Mr. Banks or whatever names he uses, has an argument for any question.  He can sound convincing except the upfront payment has to be paid.  This is NOT TRUE.
The Attorney General's Office in the State of Minnesota says this is a scam. DO NOT PAY ANYTHING UPFRONT TO WIN MONEY---EVER

i receive a call from this number saying they have a certified  check for me, i was suspicious and skeptic,but i did receive a check and it was legit. the ups deliver it at my house and take me to my bank and have it deposited.I WON!

liar!

Nonsense.  You didn't win you are supporting this fraud.

I received the same call. The message sounds a lot like the email scams that hit your mailbox each day. He has a heavy foreign accent and uses terms like certified check, the Federal Reserve and delivery by the United States Postal Service. Thanks, Julie, for the heads up. I was tempted to call to make sure this was or wasn't related to family business. Glad to have avoided that conversation!