Ken Jennings, Betsey Casman, J.D. Smith (Season 21 begins) : Season 2004 Episode 148

J.D. Smith, an editor & writer from Washington, D.C.; Betsey Casman, an appeal & grievance analyst from Las Vegas, Nevada; Ken Jennings, a software engineer from Salt Lake City, Utah (whose 38-day cash winnings total $1,321,660).