Tonight's episode of Jeopardy! marked the end of brainiac Ken Jennings's 74-game reign as the champ. Realtor Nancy Zerg finally beat him in Final Jeopardy when the competitors were faced with a real head-scratcher: "Most of this firm's 70,000 seasonal white-collar employees work only four months a year." He replied, "What is TV Guide?" when, in fact, the correct response was "What is H&R Block, and how do I get a job there?" (Actually, he guessed FedEx.) The biggest winner in game-show history, Jennings walked away with $2,520,700.