Possibly the only song in history to have had "shh... spoilers" yelled at it; it wasn't part of the film, but told the plot of the movie; the result was that Gene Pitney was asked to hold back his single release until after the movie had left the cinemas. James Taylor's cover version, mercifully, wasn't required to use DVD region technology to protect the film.
Spolier: Liberty Valance gets shot.
[Buy: To The Man Who Shot Liberty Valance]
[Part of 24 Hours from David]