This TV game show host showed great courage and commitment by staying on air until his final days. Who is Alex Trebek? Trebek who has hosted Jeopardy! since 1984, had been battling stage 4 pancreatic cancer since March of 2019. He passed away peacefully at his home early this Morning while being surrounded by friends and family. Trebek's last day of hosting in studio was October 29th. Jeopardy will continuing airing episodes hosted by Trebek through December 25th.