Paul Robson sang a most powerfully delivered version of "Blow the Man Down" in some 1930s movie.

A recent remake of Tess of the D'Urbevilles (seen on American PBS), had a wonderful dance scene with traditional English horns and reeds.

The 1960s movie On the Beach featured "Waltzing Matilda" delivered in MANY different ways: it was the only music apart from a Salvation Army band (I guess after the producers paid the big name actors, they ran out of money for music).

The movies White Squall and Jaws featured snippets of sea chanteys ("South Australia" and "Spanish Ladies" respectively).

Mick Jagger sang "Wild Colonial Boy" in the movie Ned Kelly, but best not seen more than once in a lifetime.

I am pretty sure Rob Roy featured the Chieftan's version of Sullivan's March (which struck me as incongruous for a movie about a Scotsman).

The 1980 movie The Long Riders (a Jesse James/Younger boys story) featured some interesting tunes (inlcuding a nice "Union Forever") delivered by Ry Cooder.

Another early 80s movie, Southern Comfort, featured some Cajun tunes before Zydeco became hip.

I seem to recall a 70s TV series about gold prospectors in Australia with a token American actor to give the series credibility and a western flavor but it did feature some reels and jigs.

Breaker Morant featured some nice songs including the Afrikaans version of Sarie Marais.

Cheers, Brian