Photos: Alex Trebek through the years Alex Trebek, 1974. (Ron Tom/NBCU Photo Bank/NBCUniversal via Getty Images via Getty Images)
Photos: Alex Trebek through the years In this October 1976 file photo, Canadian game show host Alex Trebek stands with his wife, Elaine, at the annual Thalian Ball, California. (Frank Edwards/Fotos International/Getty Images)
Photos: Alex Trebek through the years Alex Trebek, 1977. (Doug Griffin/Toronto Star via Getty Images)
Photos: Alex Trebek through the years Alex Trebek, circa 1984. (Michael Ochs Archive/Getty Images)
Photos: Alex Trebek through the years Alex Trebek poses in his home in Los Angeles, in this July 7, 1988, file photo. (AP Photo/Alan Greth, File)
Photos: Alex Trebek through the years Game show host Alex Trebek poses for a photo in his Los Angeles home on Aug. 3, 1988. (AP Photo/Alan Greth)
Photos: Alex Trebek through the years Alex Trebek attends the book party for "Jeopardy" on October 25, 1990, at B. Dalton Book Store in New York City. (Ron Galella, Ltd./Ron Galella Collection via Getty Images)
Photos: Alex Trebek through the years From left, Betty White as Rose Nylund; Alex Trebek as himself; David Leisure as Charlie Dietz; Bea Arthur as Dorothy Petrillo Zbornak; and Merv Griffin as himself, 1992. (Gary Null/NBCU Photo Bank)
Photos: Alex Trebek through the years "Jeopardy" host Alex Trebek poses for a portrait session with a horse in 1997 in Los Angeles. (Donaldson Collection/Michael Ochs Archives/Getty Images)
Photos: Alex Trebek through the years In this May 17, 1999, file photo, Emmy award-winning game show host Alex Trebek celebrates his newly-dedicated star on the Hollywood Walk of Fame in Los Angeles. (AP Photo/Nick Ut, File)
Photos: Alex Trebek through the years In this Friday, April 28, 2006, file photo, Alex Trebek holds the award for outstanding game show host, for his work on "Jeopardy!" backstage at the 33rd Annual Daytime Emmy Awards in Los Angeles. (AP Photo/Reed Saxon, File)
Photos: Alex Trebek through the years Actor Alex Trebek (right) and wife Jean Currivan Trebek arrive at the 38th Annual Daytime Emmy Awards show in Las Vegas, Nevada, on June 19, 2011. (ADRIAN SANCHEZ-GONZALEZ/AFP via Getty Images)
Photos: Alex Trebek through the years This May 5, 2019, file photo shows Alex Trebek gestures while presenting an award at the 46th annual Daytime Emmy Awards in Pasadena, Calif. (Chris Pizzello/Invision/AP, File)
Photos: Alex Trebek through the years Alex Trebek, host of "Jeopardy," attends a ceremony honoring the show's executive producer Harry Friedman with a star on the Hollywood Walk of Fame in Los Angeles, in this Friday, Nov. 1, 2019, file photo. (Richard Shotwell/Invision/AP, File)
Photos: Alex Trebek through the years The cast and producer of ABC's "Jeopardy! The Greatest of All Time" address the press on Wednesday, January 8, as part of the ABC Winter TCA 2020, at The Langham Huntington Hotel in Pasadena, California. (Stewart Cook/ABC via Getty Images)
