[Sigbjørn]

That depends a lot on where to draw the boundaries – how does the music qualify as jazz, are films based in stage musical allowed, and so on.

Anyway, these are the ones that immediately come to mind:

– Stormy Weather
– Singing in the Rain
– The Glenn Miller Story
– The Benny Goodman Story, although the sound could have been better and Goodman wasn’t in top form.
– Crime in the Streets
– West Side Story
– Chicago
– Swing Kids – not for Horner’s mundane score, but for the unbelievably good big band recordings of 30s swing classics.
– The Artist
– The Post

Runners-up:
– Ellington’s film scores
– The Man with the Golden Arm
– The Pink Panther