Alex Trebek's final episode of 'Jeopardy!' aired Friday. Watch the show's touching tribute to the legendary host.

• Alex Trebek's final episode of "Jeopardy!" aired Friday evening on ABC.
• The Emmy-winning TV host died in November 2020 at age 80 after a battle with pancreatic cancer.
• Ahead of its airing, the game show released the episode's tribute to Trebek on YouTube.
• Trebek had pre-recorded episodes of the game show until October 29.

Alex Trebek's final episode of "Jeopardy!" aired Friday evening on ABC. Ahead of its airing, the tribute that played at the episode's end was released on the show's YouTube channel.

The six-time Emmy-winning TV host died in November, at age 80, after a battle with pancreatic cancer. He was diagnosed at Stage 4 in March 2019.

The 88-second tribute video, set to the tune of Peter Allen's "Once Before I Go," shows many of Trebek's looks from his 37 seasons on the syndicated game show as he danced, joked, and, sometimes, dressed in costume to entertain those getting home from work each week night.

The tribute ends with a montage of Trebek saying, "So long," a simple phrase which became a staple sign off for the host over the years.

Fading to black, a short message is seen during the final seconds.

It reads, "Dedicated to Alex Trebek. Forever in our Hearts. Always our Inspiration."

Trebek had pre-recorded episodes of the game show until October 29.

A rotating cast will guest host "Jeopardy!" moving forward. Former champion Ken Jennings, who joined the show in September as a consulting producer, will be the first host starting January 11.

According to the Los Angeles Times, Katie Couric will also be among the first guest hosts.