Ken Jennings and Brad Rutter, Jeopardy! Champs

Ken Jennings and Brad Rutter, Jeopardy! Champs

Charles William Bush/Jeopardy! via Bloomberg

Ken Jennings, left, and Brad Rutter, Jeopardy!'s most successful contestants, will compete against the IBM Watson supercomputer on Jeopardy! in the first-ever man vs. machine match on Feb. 14, 2011.