Alex Trebek

George Alexander Trebek was a Canadian-American game show host and television personality who voiced himself in an episode of Scooby-Doo and Guess Who?

Trebek died on November 8, 2020 from pancreatic cancer at the age of 80.

21st century

 * Scooby-Doo and Guess Who?
 * Himself ("Total Jeopardy!," 2020)