Ken Jennings hosts "Jeopardy!" on January 11, 2021, and honored 'the great Alex Trebek.'
Credit: Jeopardy!
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Ken Jennings hosts 'Jeopardy!' and honors 'the great Alex Trebek'
Ken Jennings debuted as guest host on "Jeopardy!" Monday, and opened the show with a tribute to the late Alex Trebek.
