Canadian "Jeopardy!" host Alex Trebek says he'll likely retire when his contract is up in 2020 Sudbury-born Trebek has hosted the quiz show since 1984 The 78-year-old was asked if he could imagine a life without "Jeopardy!" and he answered, "Sure" The iconic game show host even has a couple of people in mind for his replacement Alex Trebek via Page Six Alex Trebek via Page Six In a tweet, Coates seemed ecstatic that Trebek thought of her for the job