Alex Trebek's final episode of "Jeopardy!" aired on Friday, and producers put together a great tribute video, set to the song "Once Before I Go" by Peter Allen.
It included clips from throughout his "Jeopardy!" tenure - including a hilarious segment showing him in various costumes, including a clown, the Statue of Liberty, and Gene Simmons from KISS.
It concludes with clips of him signing off at the end of the show. After the last one, he walks off the set. We'll miss you, Alex.