Under a photograph of Barack Obama laying a wreath at the tomb of Martin Luther King Jr. (posted at 2:45 today), there is the following headline: "At King's Church, Obama Speaks of Unity."  Then the caption for the photo: "Senator Barack Obama, with Coretta Scott King, laid a wreath at the tomb of the Rev. Dr. Martin Luther King Jr after speaking at Atlanta's Ebenezer Baptist Church."  Look at the picture: the woman to his left does look a bit like Mrs. King.   But she died on January 30, 2006.