"Jeopardy!" aired its final episode featuring its iconic host Alex Trebek. Trebek, who passed away at 80-years-old back in November after a long battle with pancreatic cancer, made his final appearance on the long-running game show on Friday.The episode was taped back in October. The three contestants in Trebek's final show were New York educator Jim Gilligan, Illinois software engineering manager Cliff Chang, and Yoshie Hill, the two-day returning champion from California who had won a