Otto Preminger's "Skidoo," starring Jackie Gleason, Carol Channing, and Groucho Marx, among others, is best described as a psychedelic gangster film. While the film itself is mostly forgotten, Harry Nilsson gave it a memorable soundtrack, including "The Cast and Crew," which was played over the credits.

Wait. Did I say "played over?" This song IS the credits. The COMPLETE credits. Yes, going as far as mentioning the copyright line ("Copyright MCMLXVIII/By Sigma Productions Incorporated/Your seat's on fire") and people such as negative cutters, set directors, etc. And he puts in every little detail:

--"Photographed in Panavision and Technicolor/Director of Photography: Leon Shamroy, A.S.C. Hmph."

--"It's a Paramount (TM) release, a Gulf + Western company." (Yes, he sings "TM" and "plus.")

So, it's the movie credits. But he sings them, and he sings them in an interesting and humorous way. You have to pity the poor guy: he had to take all these names and occupations, fit them into a song, and make it interesting. And he even performed it live on television once, on "Playboy After Dark" in 1968.