Watch special documentary about 'Jeopardy' and Alex Trebek tonight on ABC

Jeopardy! host Alex Trebek says he's rehearsed his final goodbye on the show.

The 79-year-old game show host discussed his health and his future with Jeopardy! in a preview of the ABC special What is Jeopardy? Alex Trebek and America's Most Popular Quiz Show, which airs Thursday at 8 p.m. ET.

Trebek was diagnosed with Stage 4 pancreatic cancer in March and finished a first round of chemotherapy in August. He said on Good Morning America in September that his numbers were "sky high" and required another round of chemo.

https://www.tvinsider.com/844421/alex-trebek-leaving-jeopardy-goodbye-preparation/