'Jeopardy!' exclusive: Who's new guest host Mike Richards? Who's next? And how soon will the show replace Alex Trebek?

'Jeopardy!' exclusive: Who's new guest host Mike Richards? Who's next? And how soon will the show replace Alex Trebek?

USATODAY.com

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Ken Jennings has wrapped up his six-week guest hosting stint on "Jeopardy!" Who's next, and how will the show replace Alex Trebek?

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