Osage with Van Gogh by T.C. Cannon
Indian Wrapped in Flag by Fritz Scholder
Victory Dance by Oscar Howe
When Coyote Leaves The Reservation (a portrait of the artist as a young Coyote) by Harry Fonseca
Actually, my ideal is probably a piece that puts a modern spin on a traditional image. Which is what Allan Houser has done in much of his work. This art is neither too old-fashioned to be boring nor too avant-garde to be off-putting.
Anyway, I'd count the above pieces as "Indian art." I wouldn't necessarily want to live with them, but they'd be nice to visit in a museum or gallery. They're good because they challenge our ideas about Indian art and about Indians.
For more on the subject, see Modern Indian Art and Battling Through the Arts.
P.S. This is a good place to mention that "Oscar Howe, a renowned South Dakota artist and former professor of art at The University of South Dakota in Vermillion, was honored recently with the 2009 Lifetime Achievement Allan Houser Legacy Award." (Source: Argus Leader)