Alex Trebek details how announcer Johnny Gilbert helps him through "Jeopardy" during cancer treatment

Jeopardy! host Alex Trebek has, somehow, managed to put on a suit and make polite conversation with contestants even while undergoing cancer treatment. If he hadn’t revealed his diagnosis, it’s possible a casual viewer of the show wouldn’t know that he’s sick. He gives the show’s announcer, Johnny Gilbert, a lot of the credit.