March 28, 2019: Alex Trebek, who has hosted over 7,000 episodes of the quiz show Jeopardy!, announced in a video that he has stage-four pancreatic cancer. Since the show debuted in 1984, Trebek and the show Jeopardy! have become fixtures of dinnertime in America. He is impeccably dressed, well-prepared, always generous toward contestants, and he keeps the focus on the clues and the contestants"”not on himself. He has become a trusted, grandfatherly authority figure over the years. Plus, learn the English phrase "to be in command."