2006 saw the release of several films with actors speaking endangered languages - Mel Gibson's Apocalypto (Mayan) and Rolf de Heer's film Ten Canoes, set in Arnhem Land, and with actors speaking mostly in Ganalbingu (and see Anggarrgoon on it).
Leaving aside the pleasure of hearing actors speak in Indigenous Australian languages, I liked Ten Canoes - it was funny, it gave an idea of the good and the bad about small societies - you're looked after, but you have reciprocal responsibility, and NO privacy - everyone knows what you're thinking. The filming was beautiful - both the recreation of early photos, and the shots of the light on the water and the tangled trees in the swamp. And the authors worked hard to "make a film that would not only satisfy local tastes and requirements but would also satisfy Western audiences used to Western storytelling conventions." 
Ten Canoes won awards, it had some box-office success, and it has resulted in several spin-off projects which benefit the Ramingining community e.g. recording traditional songs, publishing Donald Thomson's photographs of Arnhem Land in 1937, training older teenagers (with help from Save the Children and Create Australia) in film-making.
Good eh? But oddly, some people have found it offensive that the Australian Catholic Film Office and the Australian Film Institute would vote Ten Canoes Best Film of the year.