Whether you refer to him as JAY-Z, Shawn Corey Carter, Mr. Carter, or Hova, you probably know that he basically runs the world (only topped by Queen Bey, obviously). Born Dec. 4, JAY-Z is the epitome of self-made, with a net worth of $1 billion and widely regarded as one of the best rappers of all time, due to his very Sagittarian ambition and drive.