(CNN)Ken Jennings debuted as guest host on "Jeopardy!" Monday, and opened the show with a tribute to the late Alex Trebek."Sharing this stage with Alex Trebek was one of the greatest honors of my life," Jennings said. "Not many things in life are perfect, but Alex did this job pretty much perfectly for more than 36 years, and it was even better up close.
We were dazzled by his intelligence, charm and grace."He continued: "Like all 'Jeopardy!' fans, I miss Alex very much and I thank him for everything he did for all of us.
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