Software developer Ken Jennings from Salt Lake City, Utah poses for a photo with Jeopardy host Alex Trebek on the set of the show in Culver City, Calif. On Thursday Jan. 13, 2011 IBM computer Watson will play a practice round against Jennings, who won a record 74 consecutive &quot&#x3b;Jeopardy!&quot&#x3b; games in 2004-05.