From the Dysfunctional Family Reunion file:
Obama has a prolific presidential lineage that features Democrats and Republicans. His distant cousins include President George W. Bush and his father, George H.W. Bush, Gerald Ford, Lyndon Johnson, Harry S. Truman and James Madison. Other Obama cousins include Vice President Dick Cheney, British Prime Minister Sir Winston Churchill and Civil War General Robert E. Lee.
Obama often jokes about his cousin Cheney at campaign appearances. Obama is also a cousin to Brad Pitt.
Clinton, who is of French-Canadian descent on her mother’s side, is also a distant cousin of singers Madonna, Celine Dion and Alanis Morissette. Angelina Jolie is also in her family tree.
John McCain is a cousin to Laura Bush.”
WriteChic Press 
I heard in college that everybody in the world is at least 50th cousins.
Laurence Herman “Gus” Versluis is also the cousin of Washington, Jefferson, and Lincoln.
Barack Obama and Laurence Herman “Gus” Versluis both have Conyers ancestors.
Obama and Versluis themselves are direct descendants of Nicholas Perkins and Sarah Childress!
well, GLEE is the best musical tv series out there, nice characters and nice songs ~.’
Glee causes men to get their periods, asshole.
(Updated your link)
Actually NEHG seems to be misleading us abt pedigrees.