HI - my wife bought me a DNA test for Christmas to see if it furthers family research. It is available to view at Ancestry.com and Ybase.org.
My closest relatives on Ancestry are Ronald L Bramell (14 generations, 350 years) and Willis H Brimhall (23 generations, 575 years). I have been in touch with Willis and he says he is descended from George Bramhall who emigrated from England in the 1680s; obviously the Bramhalls had been spread out for some time before the ship sailed.
I'd be interested to see how other Bram*s match up.