Billy Crystal appeared on Jay Leno's next-to-last show, performing a song for the outgoing "Tonight Show" host. It is a tradition of sorts, dating back to back to Bette Midler's song for Johnny Carson when he retired from hosting the show.
Crystal was Leno's first guest 17 years ago.
Singing a song like his Oscar-hosting songs of yore, Crystal sang about the things viewers will miss most about Leno.
That chin, that chin, that fabulous chin,
It starts in Burbank and reaches Berlin
He also sang about Leno's hair, cars, sex, and Hugh Grant's hooker Divine Brown.WATCH: