Monica Lewinsky
After the White House intern conducted an infamous affair with President Bill Clinton in 1995 and 1996, Lewinsky's name became a punch line. Though Clinton initially denied their relationship, Lewinsky was called to testify before the Starr commission and contradicted the President, leading to an impeachment trial (and an eventual acquittal) in the Senate.
Post-affair: Lewinsky summed it up well: "I'm well-known for something that isn't great to be well-known for." Lewinsky remained a minor celebrity, appearing on Saturday Night Live and hosting a short-lived reality-TV show. But for the past five years, Lewinsky has kept out of the spotlight. In 2006 she graduated from the London School of Economics with a master's degree in social psychology.