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This article is about the guest star. You may be looking for the character.
George Alexander "Alex" Trebek (/trɨˈbɛk/; born July 22, 1940) is a Canadian-American television personality. He has been the host of the syndicated game show Jeopardy! since 1984; before that, he hosted other game shows, including Classic Concentration, Double Dare (the 1976 adult game show, not the Nickelodeon children's game show), The Wizard of Odds, High Rollers, and Pitfall. Trebek has made appearances in numerous television series, usually portraying himself.
He, like a lot of the actors in the series, is Canadian.
He also appeared in an episode of "Magic School Bus" and possibly "Sesame Street", which were both fellow PBS shows. His "Sesame Street" appearance may be the second time a real-life game show host appeared on the show (the other being Richard Dawson).