Learn 10 fun facts about president Barack Obama. He has eight half-siblings through four marriages and relationships of his parents. Brad Pitt is his 9th cousin. They have the same eighth great-grandfather, Edwin Hickman. Obama is an avid collector of Spiderman and Conan the Barbarian comic books. He won the 2006 Best Spoken Word Album Grammy for his book, Dreams from My Father and he has read all 7 books in the Harry Potter series.