Justice John Roberts
Previous Occupation:   Age: 50 Graduated from: Harvard Law School. He clerked for: Judge Henry Friendly, Chief Justice William Rehnquist. He used to be: associate counsel to the president for Ronald Reagan, deputy solicitor general for George H.W. Bush, partner at Hogan & Hartson. He's now: a judge on the U.S. Court of Appeals for the D.C. Circuit. Source:Emily Bazelon and David Newman, Slate.com