Visual art: The 25th Telstra National Aboriginal & Torres Strait Islander Art Award exhibition does not disappoint. But the diversity of the indigenous art domain today has made the dream of a national survey show difficult to fulfil. What the visitor sees is not just a record of the triumphs of a range of artists but a mosaic inflected by intriguing absences. Museum and Art Gallery of the Northern Territory, until October 26. Inquiries: ( 08) 8999 8264.